WBBSE Class 9 Geography And Environment Chapter 5 Weathering MCQs

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WBBSE Chapter 5 Weathering Multiple Choice Questions

Question 1. Transportation of disintegrated rocks is known as—

  1. Mechanical Weathering
  2. Chemical Weathering
  3. Denudation
  4. Erosion

Answer: 4. Erosion

Question 2. The movement of weathered rock materials in hilly areas is known as—

  1. Mechanical Weathering
  2. Chemical Weathering
  3. Mass Movement
  4. Denudation

Answer: 3. Mass Movement

Read and Learn Also WBBSE Class 9 Geography And Environment Multiple Choice Questions

Question 3. The process in which the rocks of the surface of the Earth gets disintegrate is—

  1. Erosion
  2. Denudation
  3. Disintegration
  4. Mass Movement

Answer: 3. Disintegration

Question 4. Weathering, decomposition, and removal of rocks are the combined process of—

  1. Disintegration
  2. Erosion
  3. Denudation
  4. Mass Wasting

Answer: 3. Denudation

Question 5. What is the order of relief developed by weathering? 

  1. First order
  2. Second order
  3. Third order
  4. Fourth order

Answer: 3. Third order

Question 6. Due to weathering, rocks get—

  1. Deformed
  2. Loosened
  3. Eroded
  4. Removed

Answer: 2. Loosened

WBBSE Class 9 Geography And Environment Chapter 5 Weathering MCQs

WBBSE Class 9 Geography Chapter 5 Weathering Exam MCQs

Question 7. Another name for weathering is—

  1. Erosion
  2. Denudation
  3. Disintegration
  4. None Of These

Answer: 3. Disintegration

Question 8. The main process of mechanical weathering in a warm desert is—

  1. Saline Crystal Formation
  2. Frost Action
  3. Granular Disintegration
  4. Block disintegration

Answer: 3. Granular Disintegration

Question 9. Which component plays an important role in the oxidation process of the weathering of rocks?

  1. H2
  2. O2
  3. N2
  4. CO2

Answer: 2. O2

Question 10. The main component of chemical weathering is—

  1. Water
  2. Sunlight
  3. Air Stream
  4. Flora

Answer: 1. Water

Question 11. The chemical formula of humic acid is—

  1. c187c186c89c9c1
  2. C10H20°10
  3. C12H10O10
  4. C5h607

Answer: 1. c187c186c89c9c1

Question 12. Limestone-clad areas are prone to—

  1. Carbonation
  2. Hydration
  3. Hydrolysis
  4. Oxidation

Answer:  1. Hydration

Question 13. Snowfall-prone areas experience—

  1. Mechanical Weathering
  2. Chemical Weathering
  3. Biological Weathering
  4. Mechanical And Chemical Weathering

Answer: 1. Mechanical Weathering

Question 14. Which of the following is visible in homogeneous rocks?

  1. Block Disintegration
  2. Exfoliation
  3. Granular Disintegration
  4. Biological Weathering

Answer: 2. Exfoliation

Question 15. Rusting of rocks due to chemical weathering is known as—

  1. Oxidation
  2. Carbonation
  3. Solution
  4. Hydrolysis

Answer: 1. Oxidation

Question 16. Areas that are prone to chemical weathering are—

  1. Tundra Areas
  2. Cool Temperate Areas
  3. Equatorial Areas
  4. Semi-Arid Areas

Answer: 3. Equatorial Areas

Weathering Processes and Examples MCQs for WBBSE Class 9 Exams

Question 17. Exfoliation occurs in—

  1. Basalt
  2. Granite
  3. Sandstone
  4. All Types Of rocks

Answer: 2. Granite

Question 18. The process of mechanical weathering which is most effective in high altitude areas or cold areas is—

  1. Colloid Plucking
  2. Bolder Cleaving
  3. Frost Action
  4. Sheeting

Answer: 3. Frost Action

Question 19. The kind of weathering that takes place in heterogeneous rocks is—

  1. Disintegration
  2. Boulder Cleaving
  3. Exfoliation
  4. Granular Disintegration

Answer: 4. Granular Disintegration

Question 20. When water freezes into ice, its volume—

  1. Decreases By 8%
  2. Increases By 9%
  3. Increases By 10%
  4. Decreases By 11%

Answer: 2. Increases By 9%

Question 21. Heavy rainfall-prone tropical areas witness—

  1. Mechanical Weathering
  2. Chemical Weathering
  3. Biological Weathering
  4. None of the above

Answer: 2. Chemical Weathering

Question 22. The result of mechanical weathering in rocks is—

  1. Physical Change
  2. Chemical Change
  3. Both Physical And Chemical Change
  4. No Changes Occur

Answer: 1. Physical Change

Question 23. The process in which calcium carbonate transforms into calcium bicarbonate is—

  1. Oxidation
  2. Carbonation
  3. Hydrolysis
  4. Solution

Answer: 2. Carbonation

Question 24. Both mechanical and chemical weathering occur more in—

  1. Cool Temperate Areas
  2. Warm Temperate Areas
  3. Equatorial Regions
  4. Desert Regions

Answer: 2. Warm Temperate Areas

Question 25. A major factor of mechanical weathering is—

  1. Gravitational Force
  2. Oxygen
  3. Hardness Of Rocks
  4. Heat

Answer: 4. Heat

Question 26. Cold regions experience—

  1. Mechanical weathering
  2. Chemical weathering
  3. Biological weathering
  4. Bio-Mechanical weathering

Answer: 1. Mechanical weathering

Question 27. The kind of weathering which changes the shape of a rock is known as—

  1. Biological Weathering
  2. Mechanical Weathering
  3. Bio-Mechanical Weathering
  4. Chemical Weathering

Answer: 2. Mechanical Weathering

Question 28. Gunshot-like noises occur in—

  1. Exfoliation Process
  2. Frost Weathering
  3. Granular Disintegration
  4. Block Disintegration

Answer: 3. Granular Disintegration

Question 29. The process of weathering in granite is—

  1. Exfoliation
  2. Dirt Cracking
  3. Boulder Cleaving
  4. Oxidation

Answer: 1. Exfoliation

Question 30. One of the main causes of exfoliation is—

  1. Humidity
  2. Solar Energy
  3. Decrease In Pressure
  4. Rainfall

Answer: 2. Solar Energy

Question 31. Exfoliation is common in—

  1. Desert Region
  2. Polar Region
  3. Humid Region
  4. Coastal Region

Answer: 1. Desert Region

Question 32. The weathering process that forms a rounded hill is—

  1. Frost Action
  2. Granular Disintegration
  3. Exfoliation
  4. Boulder Cleaving

Answer: 3. Exfoliation

Question 33. Due to excessive temperature variation, the bedded rock peels off like an onion, which is called—

  1. Block Disintegration
  2. Granular Disintegration
  3. Exfoliation
  4. Shattering

Answer: 3. Exfoliation

Question 34. When carbon dioxide dissolves in water is formed.

  1. Carbonic Acid
  2. Calcium Bicarbonate
  3. Organic Acid
  4. None Of These

Answer: 1. Carbonic Acid

Question 35. Exfoliation is a type of—

  1. Mechanical Weathering
  2. Chemical Weathering
  3. Biological Weathering
  4. None Of These

Answer: 1. Mechanical Weathering

Question 36. Block disintegration is common in—

  1. Granite
  2. Gabbro
  3. Basalt
  4. Sandstone

Answer: 3. Basalt

Question 37. The process of formation of humus through the decomposition of dead plants or animals is known as—

  1. Eluviation
  2. Podsolization
  3. Humification
  4. Illuviation

Answer: 3. Humification

Question 38. The first stage of soil formation is—

  1. Solum
  2. Regolith
  3. Batholith
  4. Monolith

Answer: 2. Regolith

Question 39. Conical rocks formed due to frost action—

  1. Talus or Scree
  2. Erg
  3. Pediment
  4. Bajada

Answer:  1. Talus or Scree

Question 40. Terrace farming is prevalent in—

  1. Hilly Areas
  2. Deserts
  3. Plain Areas
  4. Coastal Areas

Answer: 1. Hilly Areas

Question 41. Soil erosion in desert areas takes place—

  1. Due To River Action
  2. Due To Glacial Action
  3. Due To Wind Action
  4. Due To Human Beings

Answer:  3. Due To Wind Action

Question 42. A layer of soil formed due to weathering in limestone regions is called—

  1. Terra Rosa
  2. Talus
  3. Blocksped
  4. Pediment

Answer: 1. Terra Rosa

Question 43. The process of humus formation is called—

  1. Regolith
  2. Humification
  3. Mineralization
  4. Alluviation

Answer:  2. Humification

Question 44. Which process of weathering leads to the formation of karst landforms?

  1. Oxidation
  2. Carbonation
  3. Hydrolysis
  4. Block Disintegration

Answer:  2. Carbonation

Question 45. One of the man-made reasons for soil erosion is—

  1. Water Flow
  2. Farming
  3. Extension Of Root
  4. Digging Holes In Soil

Answer: 2. Farming

Question 46. The process of weathering that forms inselbergs is known as—

  1. Exfoliation
  2. Carbonation
  3. Hydrolysis
  4. Oxidation

Answer: 1. Exfoliation 

Question 47. The layer of disintegrated rock particles that are formed due to weathering is known as—

  1. Hardpan
  2. Batholith
  3. Regolith
  4. Lopolith

Answer:  3. Regolith

Question 48. Covering the land with straw, roots of the crops, etc. is a process of soil conservation, which is called—

  1. Mulching
  2. Terracing
  3. Strip Cropping
  4. Contour cropping

Answer:  1. Mulching

Question 49. The process that results in the removal of minerals from the upper layer of soil, is—

  1. Humification
  2. Mineralization
  3. Calcification
  4. Eluviation

Answer:  4. Eluviation

Question 50. Forms due to weathering.

  1. Mountain
  2. Plateau
  3. Soil
  4. Desert

Answer:  3. Soil

Question 51. Maximum eluviation occurs in—

  1. Desert areas
  2. Cold areas
  3. Rainy areas
  4. Temperate areas

Answer:  3. Rainy areas

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