Geography (2018) | Study Mode

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Question 71
A
ocean
B
railway
C
road
D
ropeways
Explanation

There are many advantages of road transport in comparison to other means of transport. The investment required in road transport is very less compared to other modes of transport such as railways and air transport. The cost of construction, operating cost and maintaining roads is cheaper than that of the railways.


Correct option: C
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Question 72
A
flooding
B
vulcanicity
C
afforestation
D
deforestation
Explanation

An environmental hazard is a substance, a state or an event which has the potential to threaten the surrounding natural environment and adversely affect people's health, including pollution and natural disasters such as storms and earthquakes.


Correct option: C
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Question 73
A
biosphere
B
lithosphere
C
mesosphere
D
atmosphere
Explanation

Earth is the third planet from the Sun and the only astronomical object known to harbor life.


Correct option: D
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Question 74
A

Barchan

B

Yardang

C

Rock pedestals

D

Oasis

Explanation

Deflation is an action of wind when it picks up or remove loose particles from an area and leaves a denuded surface covered with coarse material too large for wind transport. The most noticeable results of deflation in some places are shallow depressions called blowouts.

A yardang is a streamlined protuberance carved from bedrock or any consolidated or semiconsolidated material by the dual action of wind abrasion by dust & sand and deflation which is the removal of loose material by wind turbulence.


Correct option: B

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