KCET · Chemistry · p Block Elements (Group 13 & 14)

An organic compound on heating with \(\mathrm{CuO}\) produces \(\mathrm{CO}_{2}\) but no water. The organic compound may be

A carbon tetrachloride
B chloroform
C methane
D ethyl iodide

Verified Solution

Answer & Solution

Correct Answer

(A) carbon tetrachloride

Step-by-step Solution

Detailed explanation

Since, the compound on heating with \(\mathrm{CuO}\) produced \(\mathrm{CO}_{2}\), it contains carbon. Again, it does not produce water, hence it does not contain hydrogen. So, the organic compound is carbon tetrachloride \(\left(\mathrm{CCl}_{4}\right)\).

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.

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