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  1. What is the composition of nitrolim - a chemical fertilizer?
    1. Nitrogen and limestone
    2. Calcium carbide and nitrogen
    3. Calcium carbide and carbon
    4. None of these
Correct Option: D

Calcium cyanamide (CaCN2) mixed with carbon (C) is called nitrolim.
CaC2 + N2 cal.carbide→ CaCN2 + C nitrolim


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