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Question

A mixture of calcium cyanamide and carbon is known as:

A
nitrolim
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B
oleum
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C
hydronium
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D
none of these
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Solution

The correct option is A nitrolim

A mixture of calcium cyanamide and carbon is known as nitrolim.

When nitrogen is passed over calcium carbide at a suitable high temperature, we get a mixture called nitrolim which is a nitrogenous fertilizer. Calcium cyanamide (nitrolim, calcium carbimide, cyanamide) is a blackish-gray, shiny powder used in agriculture as a fertilizer, herbicide, pesticide and a defoliant for cotton plants.

The synthesis produces a solid mixture of calcium cyanamide (CaCN2) and carbon.

CaC2+N2CaCN2+C

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