question_answer

Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as

Assertion Fehlings solution can be used to distinguish acetaldehyde from benzaldehyde. Reason The C?H bond of CHO group in acetaldehyde is stronger than C?H bond of CHO group in benzaldehyde.

A) If both Assertion and Reason are true and Reason is the correct explanation of Assertion

B) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

C)  If Assertion is true but Reason is false

D)  If both Assertion and Reason are false        

Correct Answer: C

Solution :

Due to resonance, the C?H bond of ?CHO group in benzaldehyde is stronger than the C?H bond of ?CHO group in acetaldehyde. Thus, the former will not give the Fehling solution test. Hence, Fehling solution can be used to distinguish benzaldehyde from acetaldehyde.