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An oxide of carbon (X) reacts with ammonia to produce urea an important fertilizer. Which of the following combinations will not yield (X).

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${CO}_{3}^{2 -} + HCl \overset{Δ}{\to}$

$CaO + C \overset{Δ}{\to}$

$C + Excess O_{2} \overset{Δ}{\to}$

${HCO}_{3}^{-} + HCl \overset{∆}{\to}$

answer is B.

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Detailed Solution

(X) is ${CO}_{2}$ because ${CO}_{2} + {NH}_{3}$ under pressure gives urea, reaction (b) does not produce ${CO}_{2}$

$CaO + C \overset{∆}{\to} {CaC}_{2} + CO$

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