1. With reference to Ocean Mean Temperature(OMT), which of the following statements is/are correct?

1. OMT is measured up to depth of 26° C isotherm which is 129 meters in the south-western Indian Ocean during January-March.
2. OMT collected during January-March can be used in assessing whether the amount of rainfall in monsoon will be less or more than a certain long-term mean.

Select the correct answer using the code given below

1. 1 only
2. 2 only
3. Both 1 & 2
4. Neither 1 nor 2

2. Consider the following statements:

1. Jet streams occur in the Northern hemisphere only.
2. Only some cyclones develop an eye.
3. The temperature inside the eye of a cyclone is nearly 10C lesser than that of the surroundings.

Which of the statements given above is/are correct?

1. 1 only
2. 2 & 3 only
3. 2 only
4. 1 & 3 only

3. Consider the following minerals:

1. Bentonite
2. Chromite
3. Kyanite
4. Sillimanite

In India, which of the above is/are officially designated as major minerals?

1. 1 and 2 only
2. 4 only
3. 1 and 3 only
4. 2, 3 and 4 only

4. Consider the following statements:

1. Coal ash contains arsenic, lead and mercury.
2. Coal-fired power plants release sulphur dioxide and oxides of nitrogen into the environment.
3. High ash content is observed in Indian coal.

Which of the statements given above is/are correct?

1. 1 only
2. 2 and 3 only
3. 3 only
4. 1, 2 and 3

5. What are the advantages of fertigation in agriculture?

1. Controlling the alkalinity of irrigation water is possible.
2. Efficient application of Rock Phosphate and all other phosphatic fertilizers is possible.
3. Increased availability of nutrients to plants is possible.
4. Reduction in the leaching of chemical nutrients is possible.

Select the correct answer using the code given below:

1. 1, 2 and 3 only
2. 1, 2 and 4 only
3. 1, 3 and 4 only
4. 2, 3 and 4 only

6. What is/are the advantage/advantages of zero tillage in agriculture?

1. Sowing of what is possible without burning the residue of the previous crop.
2. Without the need for nursery of rice saplings, direct planting of paddy seeds in the wet soil is possible.
3. Carbon sequestration in the soil is possible.

Select the correct answer using the code given below:

1. 1 and 2 only
2. 2 and 3 only
3. 3 only
4. 1, 2 and 3

7. “The crop is subtropical in nature. A hard frost is injurios to it. It requires at least 210 frost-free days amd 50 to 100 centimeters of rainfall for its growth. A light well-drained soil capable of retaining mositure is ideally suited for the cultivation of the crop.” Which of the following is the crop?

1. Cotton
2. Jute
3. Sugarcane
4. Tea

8. What is the use of biachar in farming?

1. Biochar can be used as a part of the growing medium in vertical farming.
2. When biochar is a part of the growing medium, it promotes the growth of nitrogen-fixing microorganisms.
3. When biochar is a part of the growing medium, it enables the growing medium to retain water for a longer time.

Which of the statements given above is/are correct?

1. 1 and 2 only
2. 2 only
3. 1 and 3 only
4. 1, 2 and 3