UPSC Civil Services Prelims 2015
Question 45 of 55Environment and Ecology
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 groundwater can occur.
A1 and 3 only
B2 only
C2 and 3 only
D1, 2 and 3
Correct Answer
The correct answer is hidden
Explanation
35 words hidden ... heavy external nitrogen supply does not promote nitrogen-fixing microorganisms in the way stated; abundant available ... 36 words hidden