Which of the following statements is/are correct with regard to Nitrolim? I. It is prepared by heating calcium carbide with nitrogen. II. It decomposes into ammonia in soil. III. It is an NPK fertilizer. IV. It is an organic fertilizer. Select the answer using the code given below.
- A. I and II only ✓
- B. I, II and III
- C. IV only
- D. I, II and IV
Correct Answer: A. I and II only
Explanation
Nitrolim (Calcium cyanamide, CaCN2) is prepared by reacting calcium carbide with nitrogen gas at high temperatures. In the soil, it acts as a nitrogenous fertilizer by decomposing to yield ammonia. It is neither an NPK fertilizer nor an organic fertilizer.
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