UPSC  Geography

161. Which of the following factors is not associated with Insolation at the Surface of Earth?

Rotation of earth on its axis Angle of inclination of the sun’s rays Transparency of the atmosphere None of the above

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162. Which one of the following ocean current is found in southern hemisphere?

Oyashio Current West wind drift Gulf Stream Canaries Current

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163. Which of the following is incorrect about tides?

Neap tide has maximum range of tide. Spring tide occurs when sun, moon and earth are in a straight line. Neap tide occurs when moon and sun are perpendicular to each other. Time between the high tide and low tide, when the water level is falling, is called ebb.

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164. Which of the following is not a relief features of ocean floor?
1. Seamount
2. Guyots
3. Atoll
Select the correct options:

Both None 1 only 2 only

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165. What could be the main reason/reasons for the formation of African and eurasian desert belt?
1. It is located in the sub-tropical high pressure cells.
2. It is under the influence of warm ocean currents.
Which of the statements given above is/are correct in this context?

Both 1 and 2 None 1 only 2 only

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166. Khadar soils are preferred over Bhangar soils for crop cultivation because
1. Khadar soil are composed of fine particles than that of Bhangar soil.
2. Bhangar soils lack in kankar nodules.
Choose the correct reason from the codes below.

1 only. 2 only. Both. none of the above

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167. Why black soils are treated with cement or hydrated lime during Roadways and railways construction? Consider the reasons
1. To overcome problems of volume changes due to alternate expansion and shrinkage of soils.
2. To prevent soil erosion during wet season.
3. To improve bearing capacity of the soil.
Choose the correct reason from the codes below.

1, 2 only. 2, 3 only. 1, 3 only. All the above.

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168. Although laterite soils are formed in regions with high rainfall and high temperature, it requires good dosage of manures. What are the reasons?
1. Intense leaching because of high rainfall.
2. lack or less availability of humus.
Choose the correct code from the following

1 only. 2 only. Both . None of the above.

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169. Left hand side is the region and right hand side is the major reason in that region for soil degradation.
1. Odisha, Jharkhand --- deforestation and mining.
2. Rajasthan, Maharashtra --- over irrigation.
3. Punjab, Haryana --- overgrazing.
Which are correctly matched?

1 only. 1, 2 only. All the above. None of the above.

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170. Which one of the following is the appropriate reason to consider the Gondwana Rocks as most important of rock systems of India?

More than 90% of limestone reserves of India are found in them More than 90% of India’s coal reserves are found in them More than 90% of fertile black cotton soils are spread over them None of the reasons given above is appropriate in this context

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