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1. Which of the following statements is/are correct with reference to micro-irrigation?

1. In some areas of farming, the receding of the groundwater table can be checked.

2. Fertilizer/ nutrient loss can be reduced.

3. It is the only means of irrigation used in dryland farming.

Choose the right answer from the codes provided below:

a) 2 only              b) 1 and 3 only

c) 1 and 2 only    d) 1,2 and 3

Ans: C

2. Among which one of the following states, has the most suitable climatic conditions for the cultivation of orchids with limited cost of production and can develop an export-oriented industry in this field?

a) Arunachal Pradesh

b) Madhya Pradesh

c) Uttar Pradesh

d) Andhra Pradesh

Ans: A

3. Which one of the following states in India has all of the below-given characteristics?

1. The cultivation of cash crops is predominant over food crops.

2. Its northern part is arid and semiarid.

3. Its central part produces cotton.

a) Karnataka                         b) Tamil Nadu

c) Andhra Pradesh            d) Gujarat

Ans: D

4. The Irrawaddy, Mekong and Brahmaputra rivers originate in Tibet and flow through the narrow and parallel mountain ranges in their upper reaches. Among these rivers, Brahmaputra makes a “U” turn in its course and flows into India. This “U” turn is because of

a) Syntaxial bending of geologically young Himalayas

b) Uplift of folded Himalayan series

c) Both (a) and (b)

d) Neither (a) nor (b)

Ans: C

5. What could be the main reason for the formation of the Eurasian and African desert belt?

It is under the influence of warm ocean currents.

It is located in the subtropical high-pressure cells.

Choose the right answer from the codes provided below:

a) 1 only

b) 2 only

c) Both 1 and 2

d) Neither 1 nor 2

Ans: B

6. The jet aircraft fly very smoothly and easily in the lower stratosphere. What could be the most appropriate explanation for it?

1. There are no vertical winds in the lower stratosphere.

2. There are no clouds or water vapor in the lower stratosphere

Choose the right answer from the codes provided below:

a) 1 only                   b) 2 only

c) Both 1 and 2       d) Neither 1 nor 2

Ans: B

7. When the irrigation water accumulated in the soil evaporates, leaving behind salts and minerals, it leads to salinization. How are the irrigated lands effected by salinization?

a) It fills up the air spaces in the soil with water

b) It greatly increases the crop production

c) It makes some soils impermeable

d) It raises the water table

Ans: C