1356: What can be the impact of excessive / inappropriate use of nitrogenous fertilizers in agriculture?
1. Proliferation of nitrogen-fixing microorganisms in soil can occur.
2. Increase in the acidity of soil can take place.
3. Leaching of nitrate to the ground-water can occur.
Select the correct answer using the code given below.
(a) 1 and 3 only
(b) 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
1357: The Hunter Commission was appointed after the
(a) Black hole incident
(b) Jalianwallabagh massacre
(c) Uprising of 1857
(d) Partition of Bengal
1358: In the context of India's Five Year Plans, a shift in the pattern of industrialization, with lower emphasis on heavy industries and more on infrastructure begins in
(a) Sixth Plan
(c) Eighth Plan
(c) Fourth Plan
(d) Tenth Plan
1359: With reference to the cultivation of Khalif crops in India in the last five years, consider the following statements:
1. Area under rice cultivation is the highest.
2. Area under the cultivation of jowar is more than that of oilseeds.
3. Area of cotton cultivation is more than that of sugarcane.
4. Area under sugarcane cultivation has steadily decreased.
Which of the statements given above are correct?
(a) 1 and 3 only
(b) 2, 3 and 4 only
(c) 2 and 4 only
(d) 1, 2, 3 and 4
1360: The first bird is believed to have appeared on the surface of the earth
(a) 300 million years ago
(b) 200 million years ago
(c) 150 million years ago
(d) 100 million years ago