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Answer: 1. \(Ca(CN)_2\)

Key idea: calcium carbide absorbs nitrogen at high temperature to give calcium cyanamide (nitrolim) and carbon.

$$\mathrm{CaC_2+N_2\to CaCN_2+C}$$

The true product is \(\mathrm{CaCN_2}\), which is not printed exactly among the options. The key marks option 1, \(\mathrm{Ca(CN)_2}\), the nearest-looking formula. Honestly, calcium cyanide is a different compound from cyanamide, so the question is flawed; option 1 is the keyed answer.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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