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WBBSE Class 7 Geography Chapter 5 River Multiple Choice Questions

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WBBSE Class 7 Geography Chapter 5 MCQs

WBBSE Chapter 5 River Multiple Choice Questions

Question 1. Gangotri Glacier is the source of the river-

  1. Ganga
  2. Yamuna
  3. Tista

Answer: 1. Ganga

Question 2. The place where a river joins a sea, ocean or any other waterbody is called its-

  1. Source
  2. Mouth
  3. Obasin

Answer: 2. Mouth

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Question 3. The mouth of Ganga is in the-

  1. Bay of Bengal
  2. Indian Ocean
  3. Arabian sea

Answer: 1. Bay of Bengal

Question 4. The landform that distributes rainwater in opposite directions is-

  1. Catchment area
  2. River Valley
  3. Watershed

Answer: 3. Watershed

WBBSE Class 7 Geography Chapter 5 MCQs

Question 5. is an important tributary of River Ganga.

  1. Bhagirathi
  2. Yamuna
  3. Hoogly

Answer: 2. Yamuna

WBBSE Class 7 Geography Chapter 5 River Multiple Choice Questions

Question 6. Distributaries are found in the-

  1. The upper course of a river
  2. The middle course of a river
  3. The lower course of a river

Answer: 1. Lower course of a river

Question 7. Luni is an inland river of –

  1. India
  2. Russia
  3. China

Answer: 1. India

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Question 8. The rivers of the mountainous areas have

  1. Only in winter
  2. Only in summer
  3. Throughout the year

Answer: 3. Throughout the year

WBBSE Class 7 Geography Chapter 5 MCQs

Question 9. On a map, non-perennial rivers are shown in-

  1. Red colour
  2. Brown colour
  3. Black colour

Answer: 3. Black colour

Question 10. Ichamati is a-

  1. Rain-fed river
  2. Tide-fed river
  3. Snow-fed river

Answer: 2. Tide-fed river

Question 11. Godavari is a-

  1. Rain-fed river
  2. Tide-fed river
  3. Snow-fed river

Answer: 1. Rain-fed river

Question 12. Famous cities are situated in the Ganga Yamuna Doab region of-

  1. Agra and Allahabad
  2. Bengaluru and Secunderabad
  3. Chandigarh and Amritsar

Answer: 1. Agra and Allahabad

Question 13. When the energy of the river decreases, it ___________ its load.

  1. Deposits
  2. Transports
  3. Erodes

Answer: 1. Deposits

Question 14. The main work of a river in its upper course is-

  1. Deposition
  2. Erosion
  3. Transportation

Answer: 2. Erosion

West Bengal Class 7 Geography Chapter 5 Multiple Choice Questions

Question 15. In the mountain stage, the velocity of the river is-

  1. High
  2. Low
  3. Moderate

Answer: 1. High

Question 16. ‘I’ shaped valleys are formed by rivers in their-

  1. Mountain Stage
  2. Plain Stage
  3. Delta Stage

Answer: 1. Mountain Stage

Question 17. A narrow and deep valley is carved by a river in a-

  1. Humid region
  2. Plain region
  3. Arid region

Answer: 1. Humid region

Question 18. ___________ is a feature formed by a river in its upper course.

  1. Delta
  2. Floodplain
  3. Canyon

Answer: 3. Canyon

West Bengal Class 7 Geography Chapter 5 Multiple Choice Questions

Question 19. A very deep river valley is called a-

  1. Gorge
  2. Pothole
  3. Waterfall

Answer: 1. Gorge

Question 20. The stretch between Gomukh ice cave near Gangotri Glacier and Haridwar is identified as the-

  1. The upper course of river Ganga
  2. The middle course of river Ganga
  3. The lower course of river Ganga

Answer: 1. Upper course of river Ganga

Question 21. The mountain stage of a river is similar to the life of a man in his-

  1. Youth
  2. Old age
  3. Matured stage

Answer: 1. Youth

Question 22. Potholes are formed by a river in its-

  1. Mountain stage
  2. Delta stage
  3. Plain stage

Answer: 1. Mountain stage

Question 23. In the plain stage, a river forms ___________.

  1. Waterfalls
  2. River islands
  3. Potholes

Answer: 2. River islands

Class 7 Geography Chapter 5 MCQs WBBSE 

Question 24. Is a feature formed by a river in its middle course.

  1. Gorge
  2. Ox-bow lake
  3. Delta

Answer: 2. Ox-bow lake

Question 25. The main work of a river in its lower course is –

  1. Erosion
  2. Deposition
  3. Transportation

Answer: 2. Deposition

Question 26. Natural levees are formed by rivers in their-

  1. Lower course
  2. Upper course
  3. Middle course

Answer: 1. Lower course

Question 27. Floodplains are formed by rivers in their-

  1. Middle course
  2. Upper course
  3. Lower course

Answer: 3. Lower course

Class 7 Geography Chapter 5 MCQs WBBSE 

Question 28. A delta is formed by a river in its-

  1. Lower course
  2. Upper course
  3. Middle course

Answer: 1. Lower course

Question 29. The lower course of a river is similar to the life of a man in his-

  1. Old age
  2. Youth
  3. Matured stage

Answer: 1. Old age

Question 30. The course of an ideal river can be divided into-

  1. 1 stage
  2. 3 stages
  3. 4 stages

Answer: 2. 3 stages

Question 31. The longest estuary in the world is located at the mouth of the River-

  1. Amazon
  2. Padma
  3. Ob

Answer: 3. Ob

Question 32. Some rivers flow at a high speed in their lower course due to the presence of-

  1. Delta
  2. Doab
  3. Estuary

Answer: 3. Estuary

WBBSE Geography Chapter 5 MCQs for Class 7

Question 33. Suspension is a process of river-

  1. Erosion
  2. Deposition
  3. Transportation

Answer: 3. Transportation

Question 34. Saltation and traction are rivers-

  1. Erosion processes
  2. Transportation processes
  3. Deposition processes

Answer: 2. Transportation processes

Question 35. Attrition is a process of the river-

  1. Erosion
  2. Deposition
  3. Transportation

Answer: 1. Erosion

WBBSE Class 7 Geography Chapter 6 Rock And Soil Notes 

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WBBSE Class 7 Geography Chapter 6 Rock And Soil Introduction

A mineral is a naturally-occurring inorganic substance that consists of one or more elements to form a rock. Rock are naturally formed aggregates made up of one or more minerals. In other words, all components that made up the Earth’s solid crust are called rocks.

For millions of years, various natural forces have acted on the rocks. As a result disintegrated finer particles are formed. These are called regolith. This regolith mixes with organic matter (formed by the decomposition of dead plants and animals) and forms a thin and soft layer, which is conducive to plant growth, on the Earth’s crust. This layer is called soil.

Read And Learn Also WBBSE Class 7 Geography Notes

Volcanic eruptions of magma accumulate on the Earth’s surface or beneath the Earth’s surface and then gradually cool down and harden to form igneous rocks. The igneous rocks get disintegrated by the action of different natural agents and are subsequently deposited in layers on the sea bed.

WBBSE Class 7 Geography Chapter 6 Rock And Soil Notes

With the passage of time, after being subjected to high pressure and temperature, these layers of sediments undergo solidification to form hard rocks called sedimentary rocks. Under high temperatures and great pressure, a pre-existing igneous or sedimentary rock may change into a new form which is of rock called metamorphic rock. These rocks are hard and resistant to erosion.

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The soil that contains a high amount of sand and is not suitable for agriculture is called sandy soil. The soil that contains an equal amount of sand and silt and a little amount of clay and is ideal for agriculture is known as loamy soil. The soil that has a high amount of clay particles and has high water-holding capacity is known as clayey soil.

For millions of years, various physical, chemical and organic processes have acted on the rocks thereby disintegrating them into smaller fragments. These fragments after that formed a loose, unconsolidated layer on the Earth’s surface called regolith. Soil is actually formed from regolith.

WBBSE Class 7 Geography Chapter 6 Rock And Soil Multiple Choice Questions 

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WBBSE Class 7 Geography Chapter 6 Rock And Soil Multiple Choice Questions

Question 1. Which of the following is an important rock-forming mineral?

  1. Dolerite
  2. Quartz
  3. Conglomerate

Answer: 2. Quartz

Question 2. Stones laid on railway tracks are ________ rocks.

  1. Igneous
  2. Metamorphic
  3. Sedimentary

Answer: 1. Igneous

Read And Learn Also WBBSE Class 7 Geography Multiple Choice Questions 

Question 3. Which of the following is a source of mineral oil?

  1. Sedimentary rock
  2. Igneous rock
  3. Metamorphic rock

Answer: 1. Sedimentary rock

WBBSE Class 7 Geography Chapter 6 Rock And Soil Multiple Choice Questions

Question 4. Baking soda and alum belong to which of the following category?

  1. Minerals
  2. Rocks
  3. Soil

Answer: 1. Minerals

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Question 5. Layers or strata are found in-

  1. Sedimentary rocks
  2. Igneous rocks
  3. Metamorphic rocks

Answer: 1. Sedimentary rocks

Question 6. An example of primary rock is-

  1. Granite
  2. Sandstone
  3. Shale

Answer: 1. Granite

Question 7. An example of igneous rock is-

  1. Sandstone
  2. Basalt
  3. Quartzite

Answer: 2. Basalt

Question 8. Igneous rocks are also called-

  1. Stratified rocks
  2. Non-stratified rock
  3. Altered rocks

Answer: 2. Non-stratified rock

Question 9. What percentage of the Earth’s crust is composed of igneous rocks?

  1. 60%
  2. 80%
  3. 90%

Answer: 2. 80%

Question 10. Granite is metamorphosed into-

  1. Gneiss
  2. Marble
  3. Hornblende

Answer: 1. Gneiss

Question 11. Himalayas are formed of-

  1. Igneous rocks
  2. Sedimentary rocks
  3. Igneous and sedimentary rocks

Answer: 3. Igneous and sedimentary rocks

Question 12. Which of the following rocks are also called primary rocks?

  1. Igneous rocks
  2. Sedimentary rocks
  3. Metamorphic rocks

Answer: 1. Igneous rocks

Question 13. Granite is an example of-

  1. Igneous rock
  2. Metamorphic rock
  3. Sedimentary rock

Answer: 1. Igneous rocks

Question 14. Large deposits of granite are found in the-

  1. Himalayas
  2. Lava plateau of Maharashtra
  3. Chotanagpur Plateau of Jharkhand

Answer: 3. Chotanagpur Plateau of Jharkhand

Question 15. Due to the very high temperatures in the Earth’s interior, all materials are found in a-

  1. Gaseous state
  2. Viscous state
  3. Solid state

Answer: 2. Viscous state

Question 16. A sedimentary rock formed from dead organic matter is-

  1. Coal
  2. Gneiss
  3. Mudstone

Answer: 1. Coal

Question 17. Sandstone is metamorphosed into-

  1. Gneiss
  2. Quartzite
  3. Marble

Answer: 2. Quartzite

Question 18. The rock which is used for grinding spices is-

  1. Mudstone
  2. Limestone
  3. Sandstone

Answer: 3. Sandstone

Question 19. The conglomerate is an example of-

  1. Igneous rock
  2. Sedimentary rock
  3. Metamorphic rock

Answer: 2. Sedimentary rock

Question 20. An example of sedimentary rock is-

  1. Granite
  2. Slate
  3. Sandstone

Answer: 3. Sandstone

Question 21. Which of the following is an example of organic rock?

  1. Limestone
  2. Mudstone
  3. Sandstone

Answer: 1. Limestone

Question 22. Ancient monuments and palaces are made from-

  1. Igneous rocks
  2. Sedimentary rocks
  3. Metamorphic rocks

Answer: 2. Sedimentary rocks

Question 23. A sedimentary rock used to light fire is-

  1. Coal
  2. Clay
  3. Sandstone

Answer: 1. Coal

Question 24. A rock useful in the iron and steel industry is-

  1. Limestone
  2. Marble
  3. Basalt

Answer: 1. Limestone

Question 25. Formation of _____ rocks involves a tremendous amount of heat and pressure.

  1. Igneous
  2. Sedimentary
  3. Metamorphic

Answer: 3. Metamorphic

Question 26. The metamorphosed form of coal is-

  1. Graphite
  2. Slate
  3. Gneiss

Answer: 1. Graphite

Question 27. The metamorphosed form of gneiss is-

  1. Schist
  2. Phyllite
  3. Slate

Answer: 1. Schist

Question 28. Sculptures are made from-

  1. Marble
  2. Basalt
  3. Mudstone

Answer: 1. Marble

Question 29. The metamorphosed form of sandstone is-

  1. Quartzite
  2. Gneiss
  3. Slate

Answer: 1. Quartzite

Question 30. The metamorphosed form of gabbro is-

  1. Gneiss
  2. Serpentine
  3. Hornblende

Answer: 2. Serpentine

Question 31. The metamorphosed form of basalt is-

  1. Amphibolite
  2. Hornblende
  3. Gneiss

Answer: 1. Amphibolite

Question 32. Slate is metamorphosed into-

  1. Marble
  2. Phyllite
  3. Gneiss

Answer: 2. Phyllite

Question 33. Mudstone is metamorphosed into-

  1. Slate
  2. Marble
  3. Gneiss

Answer: 1. Slate

Question 34. Fossils are found in-

  1. Igneous rocks
  2. Sedimentary rocks
  3. Metamorphic rocks

Answer: 2. Sedimentary rocks

Question 35. The loose layer of rock debris formed by weathering is called-

  1. Regosol
  2. Raxysol
  3. Regolith

Answer: 3. Regolith

Question 36. Regur soil is formed from the rock called-

  1. Basalt
  2. Granite
  3. Gabbro

Answer: 1. Basalt

Question 37. An inorganic component of the environment is-

  1. Man
  2. Soil
  3. Bacteria

Answer: 2. Soil

Question 38. The percentage of air in the soil is-

  1. 20
  2. 15
  3. 25

Answer: 3. 25

Question 39. In soil, which two components are in equal proportions?

  1. Water-air
  2. Water-organic matter
  3. Air-minerals

Answer: 1. Water-air

Question 40. What is the percentage of organic matter in soil?

  1. 5%
  2. 10%
  3. 15%

Answer: 1. 5%

Question 41. One of the factors controlling the formation of soil is-

  1. Climate
  2. Flow of river
  3. Agricultural activities

Answer: 1. Climate

Question 42. Fertility of soil can be maintained over a long period of time by-

  1. Using chemical fertilisers
  2. Using organic fertilisers
  3. Afforestation

Answer: 2. Using organic fertilisers

Question 43. The water-holding capacity of sandy soil is-

  1. High
  2. Medium
  3. Low

Answer: 3. Low

Question 44. Watermelon is cultivated in-

  1. Sandy soil
  2. Loamy soil
  3. Clayey soil

Answer: 1. Sandy soil

Question 45. Nutrients required for plants are less in-

  1. Sandy soil
  2. Clayey soil
  3. Loamy soil

Answer: 1. Sandy soil

Question 46. The percentage of clay in clayey soil is-

  1. 40-50
  2. 60-70
  3. 80

Answer: 1. 40-50

Question 47. The water-holding capacity is very high in the case of-

  1. Alluvial soil
  2. Sandy soil
  3. Clayey soil

Answer: 3. Clayey soil

Question 48. Aeration in clayey soil is-

  1. Very high
  2. Very less
  3. Medium

Answer: 2. Very less

Question 49. The type of soil used in the cement industry is-

  1. Sandy soil
  2. Loamy soil
  3. Clayey soil

Answer: 3. Clayey soil

Question 50. The space between soil particles is very less in-

  1. Loamy soil
  2. Sandy soil
  3. Clayey soil

Answer: 3. Clayey soil

Question 51. The water-holding capacity of a clayey soil is-

  1. High
  2. Low
  3. Medium

Answer: 1. High

Question 52. The water-holding capacity of loamy soil is-

  1. Medium
  2. Low
  3. High

Answer: 1. Medium

Question 53. The soil preferred by farmers for cultivation is-

  1. Loamy soil
  2. Sandy soil
  3. Clayey soil

Answer: 1. Loamy soil

Question 54. Near river banks, we find-

  1. Alluvial soil
  2. Igneous rock
  3. Sedimentary rock

Answer: 1. Alluvial soil

Question 55. Alluvial soil can be further categorised into-

  1. Three groups
  2. Four groups
  3. Five groups

Answer: 1. Three groups

Question 56. Which of the following trees grow on saline soil?

  1. Betel Nut
  2. Mango
  3. Sundari

Answer: 3. Sundari

Question 57. Mangrove forest is found in coastal-

  1. Saline soil
  2. Alluvial soil
  3. Laterite soil

Answer: 1. Saline soil

WBBSE Class 7 Geography Chapter 5 River Notes

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WBBSE Class 7 Geography Chapter 5 River Introduction

Usually, mountains and plateaus or other highlands from where a river originates is called the source of the river.

  • The place where a river joins a sea, lake or any other water body or the place where the course of the river ends is known as its mouth.
  • The extensive area over which several small streams or channels and the main river flow is called the catchment area of the river. These numerous small streams originate from the highlands and join to form a river at the foothills.
  • The highland which separates the basin of one river system from another is called the watershed or water divide.
  • The peak of the highland divides and distributes the rainwater and makes parts of it flow in different directions.

Read And Learn Also WBBSE Class 7 Geography Notes

Tributaries are called small streams or rivers that flow from different source regions and join the main river.

  • Small streams that branch off the main river channel, flow independently, and have their mouths somewhere else are called distributaries.
  • A river valley is a valley confined by lateral banks through which a river drains from its source to its mouth.
  • The total surface area covered by a river, its tributaries and distributaries, from the source to its mouth is known as the river basin.
  • A river originating in a highland or a lake and emptying itself into a lake or any water body or swamp within the same country is called an inland river.
  • A perennial river is a stream or river that has a continuous flow of water in its channel throughout the year.
  • The streams have their sources high up in the mountains and are generally fed by ice-melt water.
  • A non-perennial river is a river that does not have a continuous flow of water throughout the year, except in the rainy season. These rivers have their sources in a lower land like a plateau and are rain-fed.

WBBSE Class 7 Geography Chapter 5 River Notes

In humid regions, a steep and narrow ‘V-shaped river valley is known as a gorge.

  1. In arid and semi-arid regions, a very steep and narrow ‘T’ shaped valley is known as a canyon.
  2. When landforms formed of resistant and soft rocks lie in the course of a river, arranged in alternate layers, the soft rocks are eroded more and faster due to river action than the resistant rocks.

This results in the creation of a step-like structure, from over which the river water seems to plunge down a certain height. This is known as a waterfall.

  • In the middle course of a river, due to a sudden decrease of the slope of the land and higher discharge of water, the river moves in a sinuous track. This zigzag course is known as a meander.
  • the River deposits the transported sand, silt, etc. on its bed in this middle course because of the reduction in the carrying capacity due to the gentle slope of the land. This load accumulates on the river bed to form a riverine island.
  • In the middle course of a river, there is continuous erosion on one side and deposition on the other side of the sinuous river bends. At times, the river meanders to such an extent, or if the water flow increases, a loop of the meander gets separated from the main channel.

 

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This abandoned channel of the river is known as an oxbow lake or a horse-shoe lake, as it resembles the foot of a horse in shape.

  • In the lower course of the river during floods, the river overflows its banks and deposits fine silt particles of the river bed on the low-lying areas along the channel and further away. As a result, a fertile plain is formed and it is known as a floodplain.
  • When the sand, silt and clay get deposited at the mouth of a river, a triangular-shaped landform is formed. As it looks like the Greek letter delta, it is known as delta. The river bifurcates at the delta and flows along its sides.

WBBSE Class 7 Geography Chapter 4 Landforms Multiple Choice Questions 

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WBBSE Class 7 Geography Chapter 4 Landforms Multiple Choice Questions

Question 1. Landforms can be classified into types based on their altitude, geological structure, slope, ruggedness, etc.

  1. 3
  2. 4
  3. 5

Answer: 1. 3

Question 2. The average height of a mountain is-

  1. More than 900 metres
  2. Less than 1000 metres
  3. Less than 500 metres

Answer: 1. More than 900 metres

Read And Learn Also WBBSE Class 7 Geography Multiple Choice Questions 

Question 3. The Rocky Mountains are located in the continent of-

  1. North America
  2. Asia
  3. Europe

Answer: 1. North America

WBBSE Class 7 Geography Chapter 4 Landforms Multiple Choice Questions

Question 4. Himalayas are-

  1. Fold mountains
  2. Igneous mountains
  3. Block mountains

Answer: 1. Fold mountains

Question 5. Crumpled rock structures are seen in

  1. Fold mountains
  2. Block mountains
  3. Erosional mountains

Answer: 1. Fold mountains

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Question 6. The mountains, formed due to the folding of the underlying rock and resembling the shape of a wave, are called-

  1. Fold mountains
  2. Block mountains
  3. Igneous mountains

Answer: 1. Fold mountains

Question 7. The fold mountains are primarily made up of-

  1. Sedimentary rocks
  2. Igneous rocks
  3. Metamorphic rocks

Answer: 1. Sedimentary rocks

Question 8. Mountains that are formed due to the rupture or fault in the rock-beds are called-

  1. Fold mountains
  2. Block mountains
  3. Igneous mountains

Answer: 2. Block mountains

Question 9. Faults can be seen in-

  1. Fold mountains
  2. Block mountains
  3. Volcanic mountains

Answer: 2. Block mountains

Question 10. Horst is a type of-

  1. Block mountain
  2. Valley
  3. Ridge

Answer: 1. Block mountains

Question 11. A is generally seen beside a block mountain or horst.

  1. Fold mountain
  2. Plain
  3. Rift valley

Answer: 3. Rift Valley

Question 12. The river flows through a rift valley.

  1. Mahanadi
  2. Narmada
  3. Sabarmati

Answer: 2. Narmada

Question 13. The Satpura Range located in Central India is an example of a/an-

  1. Block mountain
  2. Igneous mountain
  3. Relict mountain

Answer: 1. Block mountain

Question 14. Nilgiri Hills are-

  1. Block mountains
  2. Rigneous mountains
  3. Relict mountains

Answer: 1. Block mountain

Question 15. mountains are formed due to the deposition of lava on the Earth’s surface.

  1. Volcanic
  2. Fold
  3. Block

Answer: 1. Volcanic

Question 16. Mt. Fujiyama in Japan is an example of a-

  1. Block mountain
  2. Volcanic mountain
  3. Fold mountain

Answer: 2. Volcanic mountain

Question 17. Mt. Vesuvius is an example of-

  1. An active volcano
  2. A dormant volcano
  3. An extinct volcano

Answer: 1. An active volcano

Question 18. Mt. Krakatoa of Indonesia is an example of-

  1. A fold mountain
  2. A block mountain
  3. An igneous mountain

Answer: 3. An igneous mountain

Question 19. Which of the following is a volcano in Italy?

  1. Mt. Vesuvius
  2. Mt. Fujiyama
  3. Barren Island

Answer: 1. Mt. Vesuvius

Question 20. Barren Island volcano is situated in-

  1. India
  2. Japan
  3. Italy

Answer: 1. India

Question 21. Relict mountains are also known as-

  1. Volcanic mountains
  2. Residual mountains
  3. Block mountains

Answer: 2. Residual mountains

Question 22. Which of the following is a famous hill in the Bankura district of West Bengal?

  1. Paresh Nath
  2. Ajodhya
  3. Susunia

Answer: 3. Susunia

Question 23. Prashanth is an example of a-

  1. Hill
  2. Plain
  3. Mountain

Answer: 1. Hill

Question 24. The highest part of a mountain is called-

  1. Peak
  2. Valley
  3. Ridge

Answer: 1. Peak

Question 25. Mt. Everest is a mountain-

  1. Peak
  2. Range
  3. Knot

Answer: 1. Peak

Question 26. An elongated lowland between two mountains is called a-

  1. Valley
  2. Peak
  3. Ridge

Answer: 1. Valley

Question 27. The place at which several mountain ranges meet is called a mountain-

  1. Peak
  2. Knot
  3. Range

Answer: 2. Knot

Question 28. An area of highland with a steep slope and flat terrain, resembling the shape of a table is called a-

  1. Plain
  2. Plateau
  3. Mountain

Answer: 2. Plateau

Question 29. A plateau is also referred to as a

  1. Tableland
  2. Hinterland
  3. Polderland

Answer: 1. Tableland

Question 30. Chhotanagpur Plateau is an example of a/an-

  1. Intermontane Plateau
  2. Lava Plateau
  3. Dissected Plateau

Answer: 3. Dissected Plateau

Question 31. The lava plateau in Maharashtra is also known as the-

  1. Malwa Plateau
  2. Bundelkhand Plateau
  3. Deccan Trap

Answer: 3. Deccan Trap

Question 32. The Tibetan Plateau is an example of a/an-

  1. Dissected Plateau
  2. Lava Plateau
  3. Intermontane Plateau

Answer: 3. Intermontane Plateau

Question 33. Which plateau is also known as the ‘Roof of the World’?

  1. Ladakh Plateau
  2. Tibetan Plateau
  3. Pamir Plateau

Answer: 3. Pamir Plateau

Question  34. The largest plateau in the world is the-

  1. Pamir Plateau
  2. Tibetan Plateau
  3. Arabian Plateau

Answer: 2. Tibetan Plateau

Question 35. The height of the Pamir Plateau is-

  1. 4873 m
  2. 8848 m
  3. 2000 m

Answer: 1. 4873 m

Question 36. Which of the following is a plateau of northern India?

  1. Chhotanagpur Plateau
  2. Ladakh Plateau
  3. Malwa Plateau

Answer: 2. Ladakh Plateau

Question 38. Most of the land areas on the Earth are-

  1. Plains
  2. Plateaus
  3. Mountains

Answer: 1. Plains

Question 39. The average altitude of a plain from the sea level is-

  1. Less than 300 metres
  2. More than 300 metres
  3. More than 600 metres

Answer: 1. Less than 300 metres

Question 40. The Northern Plains of India are an example of-

  1. Alluvial Plains
  2. Coastal Plains
  3. Glacial Plains

Answer: 1. Alluvial Plains

Question 41. An example of a lava plain is-

  1. Deccan Trap
  2. Indo-Gangetic Plain
  3. Brahmaputra Plain

Answer: 1. Deccan Trap

Question 42. _______ are formed due to the deposition of sand carried by wind to distant places.

  1. Alluvial plains
  2. Loess plains
  3. Coastal plains

Answer: 2. Loess plains

Question 43. Which of the following is formed by the deposition of sand particles?

  1. Alluvial plain
  2. Loess plain
  3. Lava plain

Answer: 2. Loess plain

Question 44. The world’s largest deltaic plain has been formed at the mouth of the river-

  1. Ganges
  2. Nile
  3. Tigris

Answer: 1. Ganges

Question 45. Maximum population density is observed in the-

  1. Plains
  2. Plateaus
  3. Mountains

Answer: 1. Plains

Question 46. Sustenance of life is much easier in the-

  1. Plains
  2. Mountains
  3. Plateaus

Answer: 1. plains

Question 47. Most ancient civilisations have thrived on-

  1. Alluvial Plains
  2. Lava Plains
  3. Loess Plains

Answer: 1. Alluvial Plains

WBBSE Class 7 Geography Chapter 4 Landforms Notes

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WBBSE Class 7 Geography Chapter 4 Landforms Introduction

Not all parts of the Earth’s surface are the same. Some places are high, some places are undulating and some places are low-lying plains. This diversity of land on the Earth’s surface is called landform. The asthenosphere is the viscous or semi-liquid layer that has a depth of about 700 km below the Earth’s crust. The crust is divided into several pieces which are floating and moving within the asthenosphere. These pieces are called plates.

All landforms have been created by two main types of forces. Forces that act from within the Earth’s surface are called endogenetic forces and the ones acting from outside the Earth’s surface are called exogenetic forces. A mountain is a landform formed by rocks, usually more than 900 metres high and extends over a wide area. When the land gets uplifted due to compressional forces acting on it, a fold mountain is formed.

Read And Learn Also WBBSE Class 7 Geography Notes

Tectonic movements may sometimes lead to the formation of cracks along the Earth’s surface. The middle segment of these cracks may either uplift or the segments of both sides may subduce so that the middle segment forms a block mountain. Lava, ashes and pieces of rocks that gush out during a volcanic eruption get accumulated all around a volcano, thereby forming a conical highland called a volcanic mountain. The topmost part of a mountain which has a needle-like shape is called a mountain peak.

WBBSE Class 7 Geography Chapter 4 Landforms Notes

The lowland or depression between two mountains or mountain ranges is called a valley. A series of mountains, or more or less parallel lines of mountains extending over a large area is collectively called a mountain range.

A high elevated place on the Earth’s surface, where several mountain ranges meet or, from where several mountain ranges radiate in different directions, is known as a knot. A landform that suddenly rises over its surroundings with steep slopes on all sides, generally over 300m is called a plateau. It is also called a tableland.

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Intermontane Plateaus are the highest and the most expansive type of plateaus. Vast stretches in South Africa, Western Australia, Antarctica and Greenland are occupied by Continental Plateaus.

Lava gushing during volcanic eruptions and spreading like sheets through large stretches of land can form expansive lava plateaus or Volcanic Plateaus. Plateaus are dissected by intervening rivers with the dissected pieces standing apart, interspersed by river valleys are called Dissected Plateaus.

A plain is a low, flat stretch of land. Lava plains form when lava accumulates over vast, flat, low-lying stretches. Deposits of alluvium accumulating in the valleys and beds of rivers, seas and lakes for many years form alluvial plains. A flat plain formed by the deposition of wind-blown fine sand particles is known as a loess plain.

WBBSE Class 7 Geography Chapter 3 Air Pressure Multiple Choice Questions

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WBBSE Class 7 Geography Chapter 3 Air Pressure Multiple Choice Questions

Question 1. The blanket of air surrounding the Earth is called-

  1. Atmosphere
  2. Hydrosphere
  3. Lithosphere

Answer: 1. Atmosphere

Question 2. The force exerted by the air per unit area on the Earth’s surface is called atmospheric-

  1. Pressure
  2. Humidity
  3. Density

Answer: 1. Pressure

Read And Learn Also WBBSE Class 7 Geography Multiple Choice Questions 

Question 3. Normal atmospheric pressure at sea level is approximate-

  1. 1000 MB
  2. 1020.5 MB
  3. 1013.25 MB

Answer: 3. 1013.25 MB

WBBSE Class 7 Geography Chapter 3 Air Pressure Multiple Choice Questions

Question 4. Air exerts pressure on the Earth’s surface due to the-

  1. Transparency of air
  2. Gravitational attraction of the earth
  3. Gaseous nature of air

Answer: 2. Gravitational attraction of the earth

Question 5. Atmospheric pressure falls by for every 110 metres of ascent.

  1. 1 cm of mercury
  2. 1 mm of mercury
  3. 1 MB.

Answer: 1. 1 cm of mercury

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Question 6. The average air pressure is-

  1. 1 kg per square centimetre
  2. 1 tonne per square centimetre
  3. 1 gram per square centimetre

Answer: 1. 1 kg per square centimetre

Question 7. Normal atmospheric pressure over the Earth varies between-

  1. 980 mb to 1050 mb
  2. 580 mb to 650 mb
  3. 180 mb to 270 mb

Answer: 1. 980 Mb to 1050 Mb

Question 8. Atmospheric pressure is measured by an instrument called-

  1. Thermometer
  2. Barometer
  3. Hygrometer

Answer: 2. Barometer

Question 9. The barometer was invented by-

  1. Torricelli
  2. Galileo
  3. Newton

Answer: 1. Torricelli

Question 10. Is used in barometers.

  1. Oil
  2. Water
  3. Mercury

Answer: 3. Mercury

Question 11. Gradual fall in the mercury column in a barometer indicates the probable occurrence of-

  1. Rain
  2. Clear weather
  3. Blue sky

Answer: 1. Rain

Question 12. The principal cause of variation in the atmospheric pressure is-

  1. Air flow
  2. Temperature
  3. Latitude

Answer: 2. Temperature

Question 13. We do not feel the atmospheric pressure, because-

  1. It is balanced by the fluid pressure inside our body
  2. It is less
  3. Our body can tolerate the pressure

Answer: 1. It is balanced by the fluid pressure inside our body

Question 14. Atmospheric pressure on a high mountain range is-

  1. More than that at sea level
  2. Less than that at sea level
  3. Same as that at sea level

Answer: 2. Less than that at sea level

Question 15. At the top of Mount Everest, the atmospheric pressure is-

  1. 330 millibar
  2. 30 millibar
  3. 1000 millibar

Answer: 1. 330 millibar

Question 16. With an increase in altitude the atmospheric pressure-

  1. Increases
  2. Remains the same
  3. Decreases

Answer: 3. Decreases

Question 17. In hilly regions the boiling point of liquids-

  1. Increases
  2. Remains the same
  3. Decreases

Answer: 3. Decreases

Question 18. With an increase in atmospheric pressure, the boiling point of liquids-

  1. Increases
  2. Decreases
  3. Remains The Same

Answer: 1. Increases

Question 19. Water vapour is than air.

  1. Lighter
  2. Heavier
  3. At times lighter or heavier

Answer: 1. Lighter

Question 20. The amount of water vapour present in the air is-

  1. Variable
  2. Same
  3. Increases

Answer: 1. Variable

Question 21. In the monsoon season, atmospheric pressure remains-

  1. High
  2. Low
  3. Very high

Answer: 2. Low

Question 22. The pressure of saturated air is-

  1. Low
  2. High
  3. Moderate

Answer: 1. Low

Question 23. With an increase in pressure, the volume of air-

  1. Increases
  2. Remains The Same
  3. Decreases

Answer: 3. Decreases

Question 24. When air is heated up, the molecules contained within it move-

  1. Faster
  2. At the same speed
  3. Slower

Answer: 1. Faster

Question 25. When hot air cools down, its density-

  1. Increases
  2. Remains the same
  3. Decreases

Answer: 1. Increases

Question 26. Permanent low-pressure belts prevail over the-

  1. Equatorial Region
  2. Subtropical Region
  3. Polar Region

Answer: 1. Equatorial Region

Question 27. The number of permanent pressure belts on the Earth’s surface are-

  1. 5
  2. 6
  3. 7

Answer: 3. 7

Question 28. The sub-polar low-pressure belt near the Antarctic Circle is observed around the-

  1. 66½° north latitude
  2. 66½° south latitude
  3. 23½° south latitude

Answer: 2. 66½° south latitude

Question 29. Lies between 60°-90° N and S Latitudes.

  1. High-pressure belt
  2. Calm pressure belt
  3. Low-pressure belt

Answer: 3. Low-pressure belt

Question 30. Forms due to extreme cold conditions in both polar regions.

  1. High-pressure belt
  2. Low-pressure belt
  3. Calm belt

Answer: 1. High-pressure belt

Question 31. In the equatorial region, the atmospheric pressure is-

  1. High
  2. Low
  3. Moderate

Answer: 2. Low

Question 32. The pressure zone prevails over the North Pole is-

  1. High
  2. Low
  3. Moderate

Answer: 1. High

Question 33. Low-pressure belt lies between-

  1. 5°N-5°S latitude
  2. 20°-30°N and S latitude
  3. 30°-40°N and S latitude

Answer: 1. 5°N-5°S latitude

Question 34. Sub-tropical high-pressure belts exist between-

  1. 25°-35°N and S latitudes
  2. 5°-10°N and S latitudes
  3. 30°-60°N and S latitudes

Answer: 1. 25°-35°N and S latitudes

Question 35. Polar high-pressure belts form between-

  1. 90°N and S latitudes
  2. 25°-35°N and S latitudes
  3. 30°-60°N and S latitudes

Answer: 1. 90°N and S latitudes

Question 36. The number of pressure cells observed in the northern hemisphere is that in the southern hemisphere.

  1. More than
  2. Same as
  3. Less than

Answer: 1. More than

Question 37. The size of pressure cells is elongated in the-

  1. Southern hemisphere
  2. Eastern hemisphere
  3. Northern hemisphere

Answer: 1. Southern hemisphere

Question 38. The line joining places of equal pressure on the Earth’s surface is called-

  1. Contour
  2. Isotherm
  3. Isobar

Answer: 3. Isobar

Question 39. The isobars stretch along-

  1. East-west direction
  2. North-south direction
  3. North-west direction

Answer: 1. East-west direction

Question 40. Closely-spaced isobars indicate the presence of-

  1. High-Velocity Winds
  2. Low-Velocity Winds
  3. Feeble Winds

Answer: 1. High-Velocity Winds

Question 41. Winds blowing from high-pressure zones

  1. Cold in nature
  2. Hot in nature
  3. Light in nature

Answer: 1. Cold in nature

Question 42. The tropical cyclones which form over the China Sea are called-

  1. Typhoon
  2. Tornado
  3. Willy Willy

Answer: 1. Typhoon

Question 43. The tropical cyclones which form over north-west Australia are called-

  1. Willy Willy
  2. Tornado
  3. Hurricane

Answer: 1. Willy Willy

Question 44. The whirlwinds that form on the Indian Ocean are known as-

  1. Cyclones
  2. Hurricanes
  3. Typhoons

Answer: 1. Cyclones

Question 45. The average air temperature at the top of Mount Everest is-

  1. -20°C to -35°C
  2. -200°C to -350°C
  3. 20°C to 35°C

Answer: 1. -20°C to -35°C

Question 46. In Puri, the atmospheric pressure is approximate-

  1. 1000 millibar
  2. 330 millibar
  3. 30 millibar

Answer: 1. 1000 millibar

Question 47. The speed of air is measured in units of-

  1. Millibar
  2. Kilogram
  3. Knot

Answer: 3. Knot

WBBSE Class 7 Geography Chapter 3 Air Pressure Notes

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WBBSE Class 7 Geography Chapter 3 Air Pressure Introduction

Air is a mixed gaseous substance. Like other substances, the air has its own mass. The weight of air is felt on the surface of the Earth due to gravity. For this weight, the value of the force exerted by the air per unit area on the surface is called the air pressure. There are mainly two types of air pressure high pressure and 2 low pressure. The pressure exerted at sea level by 76 cm of mercury column at 45° north latitude, is called the standard or average atmospheric pressure. It is equal to 1 kg per sq cm or 1013.25 Mb.

Read And Learn Also WBBSE Class 7 Geography Notes

The unit that is used to measure air pressure is a millibar. 1 millibar is the pressure exerted by 0.02953 inches. column of mercury. In some definite regions on the Earth’s surface, high pressure or low pressure is observed throughout the year. These definite regions of atmospheric pressure surround the Earth in the form of belts. These are called atmospheric pressure belts.

WBBSE Class 7 Geography Chapter 3 Air Pressure Notes

An imaginary line joining all the places on the Earth’s surface having equal atmospheric pressure is known as an isobar. It is shown in the weather map expressing its value in millibars. If the average air pressure is more than 1013.25 MB, it is known as high pressure.

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The region where the atmospheric pressure is higher than the surrounding areas is known as the high-pressure area. It is denoted on the map as ‘H’. If the average air pressure is less than 986 MB, it is known as low pressure.

The region where the atmospheric pressure is lower than the surrounding areas is known as the low-pressure area. It is denoted on the map as ‘L’ The horizontal movement of air along the surface of the Earth from a high-pressure area to a low-pressure area is known as the wind.

WBBSE Class 7 Geography Chapter 2 Determination Of The Location Of A Place On The Earth s Surface Multiple Choice Question And Answers

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WBBSE Chapter 2 Determination Of The Location Of A Place On The Earth’s Surface Multiple Choice Questions

Question 1. It divides the Earth into the northern and the southern hemispheres.

  1. Tropic of Capricorn
  2. Tropic of Cancer
  3. Equator

Answer: 3. Equator

Question 2. Among the parallels of latitude, an important line of latitude dividing the Earth into the northern and the southern hemispheres is-

  1. The equator
  2. The tropic of cancer
  3. The tropic of Capricorn

Answer: 1. The equator

Read And Learn Also WBBSE Class 7 Geography Multiple Choice Questions 

Question 3. Latitudes are also known as-

  1. The equator
  2. Parallels
  3. Meridians

Answer: 2. Parallels

WBBSE Class 7 Geography Chapter 3 Air Pressure Notes

Question 4. The angular distance of a place north or south of the Equator measured from the center of the Earth is called the-

  1. Longitude of that place
  2. Central meridian of that place
  3. Latitude of that place

Answer: 1. Longitude of that place

Question 5. The 0° latitude is also known as the-

  1. Tropic of Cancer
  2. Equator
  3. Tropic of Capricorn

Answer: 2. Equator

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Question 6. In the geographical reference system, the Equator, the only great circle has an angular measure of-

  1. 0°
  2. 90°
  3. 180°

Answer: 1. 0°

Question 7. Among the parallels of latitude, the great circle is-

  1. The tropic of cancer
  2. The tropic of Capricorn
  3. The equator

Answer: 3. The equator

Question 8. The Tropic of Cancer is located at-

  1. 22½° south
  2. 23½° south
  3. 23½° north

Answer: 3. 23½° north

Question 9. The Tropic of Capricorn is located at of the Equator.

  1. 22½° S
  2. 23½° N
  3. 23½° S

Answer: 3. 23½° S

Question 10. The latitudinal value of the Arctic Circle is-

  1. 23½°N
  2. 66½°N
  3. 90°N

Answer: 2. 66½N

Question 11. The latitudinal value of the Antarctic Circle is-

  1. 23½°S
  2. 66½°S
  3. 90°S

Answer: 2. 66½°S

Question 12. The 90°N latitude is referred to as-

  1. North Pole
  2. South Pole
  3. Arctic Circle

Answer: 1. North Pole

Question 13. Values for latitudes range from a minimum of 0° to a maximum of-

  1. 60°
  2. 75°
  3. 90°

Answer: 4. 90°

Question 14. The total number of parallels across the globe is-

  1. 181
  2. 180
  3. 179

Answer: 3. 179

Question 15. The average distance between any two parallels is-

  1. 111 km
  2. 121.1 km
  3. 131.1 km

Answer: 1. 111 km

Question 16. The center of the Earth coincides with that of the-

  1. Equator
  2. Tropic of Capricorn
  3. Tropic of cancer

Answer: 1. Equator

Question 17. divides the Earth into the eastern and the western hemispheres.

  1. The Antarctic Circle
  2. The Arctic Circle
  3. The Prime Meridian

Answer: 3. The Prime Meridian

Question 18. Every meridian of longitude is a-

  1. Semi-Circle
  2. Circle
  3. Ellipse

Answer: 2. Semi-Circle

Question 19. The 0° longitude is also known as-

  1. The Parallel Of Latitude
  2. The Equator
  3. The Central Meridian

Answer: 3. The Central Meridian

Question 20. The Prime Meridian passes through-

  1. Delhi
  2. Amsterdam
  3. Greenwich

Answer: 3. Greenwich

Question 21. The Greenwich Meridian is a meridian whose longitudinal value is-

  1. 23°
  2. 90°
  3. 0°

Answer: 3. 0°

Question 22. The angular measure of the meridian opposite to the Prime Meridian in a 360° system is-

  1. 180°
  2. 0°
  3. 90°

Answer: 1. 180°

Question 23. The total number of meridians across the globe is-

  1. 359
  2. 360
  3. 361

Answer: 2. 360

Question 24. The time difference for 1° longitude is-

  1. 3 minutes
  2. 4 minutes
  3. 5 minutes

Answer: 2. 4 minutes

Question 25. Which longitude has been adopted as the Standard Meridian of India for calculating Indian Standard Time (IST)?

  1. 82° E
  2. 82°30′ E
  3. 83°30′ E

Answer: 2. 82°30′ E

Question 26. The difference in standard time between Kolkata and Dhaka is-

  1. 30 minutes
  2. 60 minutes
  3. 24 minutes

Answer: 1. 30 minutes

Question 27. South America is located entirely in the-

  1. Western hemisphere
  2. Eastern hemisphere
  3. Northern hemisphere

Answer: 1. Western hemisphere

Question 28. The clock determining the time at Greenwich is called-

  1. Chronometer
  2. Barometer
  3. Anemometer

Answer: 1. Chronometer

Question 29. Helps in determining one’s location in the northern hemisphere.

  1. Hadley’s Octant
  2. Proxima Centauri
  3. Pole Star

Answer: 3. Pole Star

Question 30. It helps in determining one’s location in the southern hemisphere.

  1. Hadley’s Octant
  2. Proxima Centauri
  3. Pole Star

Answer: 1. Hadley’s Octant

WBBSE Class 7 Geography Chapter 8 Soil Pollution Multiple Choice Questions

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WBBSE Chapter 8 Soil Pollution Multiple Choice Questions

Question 1. As a result of dumping of cement, bricks, wood, rocky deposits, and garbage on the ground-

  1. Water pollution occurs
  2. Soil pollution occurs
  3. Noise pollution occurs

Answer: 1. Soil pollution occurs

Question 2. If DDT is sprayed on crops it causes-

  1. Air and water pollution
  2. Soil and water pollution
  3. Soil, water, and air pollution

Answer: 3. Soil, water, and air pollution

Read And Learn Also WBBSE Class 7 Geography Multiple Choice Questions 

Question 3. Acid rain pollutes-

  1. Air
  2. Air and water
  3. Water and soil

Answer: 3. Water and soil

WBBSE Class 7 Geography Chapter 8 Soil Pollution Multiple Choice Questions

Question 4. A major soil pollutant is-

  1. Plastic
  2. Iron sheets
  3. Detergent

Answer: 1. Plastic

Question 5. Mercury is a type of-

  1. Organic waste
  2. Inorganic waste
  3. Solid waste

Answer: 2. Inorganic waste

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Question 6. An example of domestic waste is-

  1. Plastic
  2. X-ray plate
  3. Fruit peels.

Answer: 3. Fruit peels.

Question 7. An inorganic poisonous metal let out from factories is-

  1. Plastic
  2. Carbon monoxide
  3. Lead

Answer: 3. Lead

Question 8. From thermal power stations soil pollution is caused by letting out of-

  1. Nuclear wastes
  2. Radioactive substances
  3. Fly ash

Answer: 3. Fly ash

Question 9. An example of chemical fertilizer is-

  1. Urea
  2. Plastic
  3. Cobalt

Answer: 1. Urea

Question 10. Which among the following set of elements causes more soil pollution?

  1. Iron, copper, and silver
  2. Lead, arsenic, and cadmium
  3. Calcium, magnesium, and sodium

Answer: 2. Lead, arsenic, and cadmium

Question 11. Poisonous waste products are generated by-

  1. Household activities
  2. Construction work
  3. Industrial activities

Answer: 3. Industrial activities

Question 12. Poisonous waste products mainly comprise of-

  1. Construction wastes
  2. Acid
  3. Vegetable peels

Answer: 2. Acid

Question 13. The ash let out from thermal power stations is called-

  1. Fly ash
  2. Acid
  3. Oxygen

Answer: 1. Fly ash

Question 14. A radioactive pollutant affecting the quality of soil is-

  1. Uranium
  2. Iron
  3. Coal

Answer: 1. Uranium

Question 15. When plastic waste gets mixed with soil, the soil fertility-

  1. Increases
  2. Remains the same
  3. Decreases

Answer: 3. Decreases

Question 16. Excessive application of phosphate fertilizers on farmlands increases the-

  1. Nitrogen content of the soil
  2. The potassium content of the soil
  3. Phosphorus content of the soil

Answer: 3. Phosphorus content of the soil

Question 17. Excessive irrigation makes the soil more-

  1. Acidic
  2. Saline
  3. Alkaline

Answer: 2. Saline

Question 18. Use of inorganic fertilizer-

  1. Increases the acidity of the soil
  2. Increases the salinity of soil
  3. Decreases the acidity of the soil

Answer: 1. Increases the acidity of the soil

Question 19. Poisonous waste products are generated from-

  1. Pesticide industry
  2. Paper industry
  3. Sugar industry

Answer: 1. Pesticide industry

Question 20. Extensive irrigation makes the soil-

  1. More acidic
  2. More saline
  3. Unproductive

Answer: 2. More saline

Question 21. Due to eucalyptus plants, the acidity of the soil-

  1. Increases
  2. Decreases
  3. Remains the same

Answer: 1. Increases

Question 22. Mycosis is a disease caused by-

  1. Virus
  2. Metallic poisoning
  3. Fungi

Answer: 3. Fungi

Question 23. The smoke emitted from factories leads to –

  1. Acid rain
  2. Death of organisms
  3. Soil erosion

Answer: 1. Acid rain

Question 24. Eutrophication can be observed due to-

  1. Agricultural activities
  2. Industrial activities
  3. Electric generation

Answer: 1. Agricultural activities

Question 25. The organism most affected by soil pollution is-

  1. Crabs
  2. Fish
  3. Worms

Answer: 3. Worms

Question 26. Which among these does not get organically decomposed in soil?

  1. Paper
  2. Wood
  3. Plastic

Answer: 3. Plastic

Question 27. Which of the following does not fall in the category of poisonous waste products?

  1. Gunpowder
  2. Acid
  3. Paper

Answer: 3. Paper

Question 28. The Bhopal Gas Tragedy took place in-

  1. 1984
  2. 1986
  3. 1960

Answer: 1. 1984

Question 29. The substance responsible for the Bhopal Gas Tragedy was-

  1. MIC gas
  2. Nuclear radioactive particles from power stations
  3. Soil pollution

Answer: 1. MIC gas

Question 30. The Chornobyl Disaster took place in-

  1. 1984
  2. 1986
  3. 1963

Answer: 2. 1986

Question 31. The substance responsible for the Chornobyl Disaster was a-

  1. Poisonous gas
  2. Radioactive particles from nuclear power station
  3. Mercury

Answer: 2. Radioactive particles from nuclear power station

Question 32. The abbreviated name of methyl isocyanate

  1. MIC
  2. LIC
  3. SO2 gas

Answer: 1. MIC

Question 33. A method by which soil pollution can be controlled on farmlands is-

  1. Extensive farming
  2. Organic farming
  3. Use of tractors

Answer: 2. Organic farming

Question 34. Soil pollution from waste products generated by medical establishments can be controlled through-

  1. Landfills
  2. Disposal in waterbodies
  3. Burning in a controlled manner

Answer: 3. Burning in a controlled manner

Question 35. The soil in Purulia is-

  1. Coarse
  2. Moderately fertile
  3. Very fertile

Answer: 1. Coarse