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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.

Options

  1. AI and II only
  2. BI, II and III
  3. CIV only
  4. DI, II and IV

Correct answer

A. I and II only

Step-by-step solution

Nitrolim is a mixture of calcium cyanamide ( CaCN₂ ) and carbon ( C ). It is prepared by heating calcium carbide with nitrogen gas at a high temperature. CaC₂ + N₂ CaCN₂ + C Thus, statement I is correct. In the soil, nitrolim reacts with moisture to release ammonia gas, which provides nitrogen to the plants. CaCN₂ + 3H₂O CaCO₃ + 2NH₃ Thus, statement II is correct. Nitrolim provides only nitrogen to the soil, making it a nitrogenous fertilizer, not an NPK fertilizer. Thus, statement III is incorrect. Nitrolim is an

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