TS EAMCET · Chemistry · Hydrogen

$\mathrm{CaC}_2+2 \mathrm{D}_2 \mathrm{O} \longrightarrow$ "P" $+\mathrm{Ca}(\mathrm{OD})_2$ In the above reaction product " $\mathrm{P}$ " is

A $\mathrm{C}_2 \mathrm{H}_2$
B $\mathrm{C}_2 \mathrm{H}_4$
C $\mathrm{CD}_4$
D $\mathrm{C}_2 \mathrm{D}_2$

Verified Solution

Answer & Solution

Correct Answer

(D) $\mathrm{C}_2 \mathrm{D}_2$

Step-by-step Solution

Detailed explanation

$\mathrm{CaC}_2+2 \mathrm{D}_2 \mathrm{O} \rightarrow \mathrm{Ca}(\mathrm{OD})_2+\mathrm{C}_2 \mathrm{D}_2$

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

The decomposition of benzene diazonium chloride is a first order reaction. The time taken for its decomposition of $\frac{1}{4}$ and $\frac{1}{10}$ of its initial concentration are $t_{1 / 4}$ and $t_{1 / 10}$ respectively. The value of $\frac{t_{1 / 4}}{t_{1 / 10}} \times 100$ is (Given : $\log 2=0.3$ )

TS EAMCET 2024 Easy

Match the following.

	Column-1 Reaction		Column-2 Main product
A	${SO}_{3} \overset{heavy water}{⟶}$	I	$C_{2} D_{2}$
B	${CaC}_{2} \overset{heavy water (excess)}{⟶}$	II	${CD}_{4}$
C	${Al}_{4} C_{3} \overset{heavy water (large excess)}{⟶}$	III	$D_{2} {SO}_{3}$
		IV	$C_{2} D_{4}$
		V	$D_{2} {SO}_{4}$

The correct match is

TS EAMCET 2021 Hard

Explore more questions on app

From TS EAMCET

Explore more questions on app

\(\mathrm{CaC}_2+2 \mathrm{D}_2 \mathrm{O} \longrightarrow\) "P" \(+\mathrm{Ca}(\mathrm{OD})_2\) In the above reaction product " \(\mathrm{P}\) " is

Answer & Solution

Step-by-step Solution

See the Complete Solution