Test Index

MHTCET 17 Apr 2026 Shift 2 Paper

Question : 68 of 150

Marks: +1, -0

\mathrm{CaC}_{2}+\mathrm{H}_{2} \mathrm{O} \rightarrow A+\mathrm{Ca}(\mathrm{OH})_{2}

Solution:

Concept:

Calcium carbide undergoes hydrolysis to form an alkyne gas and calcium hydroxide.

Explanation:

Calcium carbide

\left( \mathrm{CaC}_{2} \right)

reacts with water to produce ethyne

\left( \mathrm{C}_{2}\mathrm{H}_{2} \right)

and calcium hydroxide

\left( \mathrm{Ca}(\mathrm{OH})_{2} \right)

The balanced chemical equation is:

\mathrm{CaC}_{2} + 2\mathrm{H}_{2}\mathrm{O} \rightarrow \mathrm{C}_{2}\mathrm{H}_{2} + \mathrm{Ca}(\mathrm{OH})_{2}

Here, the product

A

\mathrm{C}_{2}\mathrm{H}_{2}

The common name of

\mathrm{C}_{2}\mathrm{H}_{2}

is ethyne.

Therefore,

A

is ethyne.

Answer:

B. Ethyne

Go to Question:

Prev Question

Next Question