World Geography Questions (MCQs) for UPSC, State PCS and SSC Examinations
World Geography Multiple Choice Questions (MCQs) Quiz for State and UPSC Civil Services Examinations. Objective Questions on Physical Geography and World Geography for competitive examinations.
41. What is decomposition of a chemical compound by reaction with water called?
[A] Oxidation
[B] Hydrolysis
[C] Erosion
[D] Carbonation
Show Answer
Correct Answer: B [Hydrolysis]
Notes:
Hydrolysis is the process of decomposition of a chemical compound by reaction with water. Igneous rocks are more susceptible to hydrolysis. It increases the volume of rocks and leads to disintegration.
42. What are debris flows composed largely of volcanic material from the flanks called?
[A] Loo
[B] Lahars
[C] Maestro
[D] Chinook
Show Answer
Correct Answer: B [Lahars]
Notes:
Lahars are debris flows composed largely of volcanic material from the flanks. These are water saturated and are extremely destructive events.
43. What is the reduction in the size of the wind blown particles due to their mutual friction called?
[A] Abrasion
[B] Attrition
[C] Deflation
[D] Deposition
Show Answer
Correct Answer: B [Attrition]
Notes:
Attrition is the reduction in the size of the wind blown particles due to their mutual friction. This results in the reduction in the size of the rock fragments.
44. What kind of a landform are Bajadas?
[A] Landform by Aoelian Deposition
[B] Landform by Aeolian Erosion
[C] Landform by Glacial depostion
[D] Landform by fluvial deposition
Show Answer
Correct Answer: A [Landform by Aoelian Deposition]
Notes:
Bajadas are landforms of Aeolian deposition. They are sometimes called as Bahadas. They are sloping surfaces situated between pediment and the playa.
45. Which among the following landforms is also called as a coastal bench?
[A] Tor
[B] Delta
[C] Wave cut platform
[D] Meanders
Show Answer
Correct Answer: C [Wave cut platform]
Notes:
Wave cut platforms also called as coastal benches or shore platforms, are erosional landforms formed at the base of the sea cliff along the shoreline.
46. What is the channel with numerous Aits called?
[A] Meanders
[B] Braided channel
[C] Anabranch
[D] Stream channel
Show Answer
Correct Answer: B [Braided channel]
Notes:
Aits is a small island. It is used to refer to the river Thames and its tributaries in England. A channel with numerous Aits is called as a Braided channel.
47. What is a deep vertical shaft in karst regions opening into a network of a subterranean passages called?
[A] Oasis
[B] Abime
[C] Ejecta Blanket
[D] Tor
Show Answer
Correct Answer: B [Abime]
Notes:
Karst topography is a result of the dissolution of soluble rocks like limestone, dolomite and gypsum. Abime, a karst landform is a deep vertical shaft opening into a network of a subterranean passage.
48. What is a steep sided valley formed within the karstic regions by fluvial erosion or due to the collapse of the roof of a cave called?
[A] Abime
[B] Tor
[C] Calanque
[D] Oasis
Show Answer
Correct Answer: C [Calanque]
Notes:
Karst topography is a result of the dissolution of soluble rocks like limestone, dolomite and gypsum.
Calanque is a steep sided valley formed with the karstic regions due to fluvial erosion or due to the collapse of a roof of cave.
49. What feature is formed due to dissolution of carbonate rocks?
[A] Tors
[B] Inselbergs
[C] Karst fenster
[D] Drumlins
Show Answer
Correct Answer: C [Karst fenster]
Notes:
Karst landforms are a type of topography formed due to dissolution of soluble rocks like limestone, dolomite and gypsum.
Karst fenster is formed due to dissolution of carbonate rocks. The word fenster in german means window. These features are windows into the karst landscape.
50. What is an isolated steep-sided residual hill composed of either limestone, marble, or dolomite called?
[A] Inselberg
[B] Mogote
[C] Uvala
[D] Horn
Show Answer
Correct Answer: B [Mogote]
Notes:
Karst landforms are a type of topography formed due to dissolution of soluble rocks like limestone, dolomite and gypsum.
A mogote is an isolated steep sided residual hill which is composed of either limestone, dolomite or marble. They have rounded tower like form. A group of mogotes along a ridge are called pepinos.
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