MHT CET · Chemistry · Carboxylic Acid Derivatives

Which of the following statement is false?

A \(40 \%\) solution HCHO is known as formalin
B HCHO is least reactive in its homologous series
C The boiling point of iso-vareladehyde is less than \(n\) -varelaldehyde (4)
D The boiling point of ketones are higher than that of aldehydes

Verified Solution

Answer & Solution

Correct Answer

(B) HCHO is least reactive in its homologous series

Step-by-step Solution

Detailed explanation

Formaldehyde is the most reactive in its homologous series. Order of reactivity of some aldehydes is as follows \(\mathrm{HCHO}>\mathrm{CH}_{3} \mathrm{CHO}>\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CHO}\)

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

Explore more questions on app

From MHT CET

Explore more questions on app