1.

Assertion (A) : For the preparation of aldehydes on industrial scale, alcohol vapours are passed over heavy metal catalysts (Ag or Cu). Reason (R) : Ozonolysis of alkenes followed by reaction with Zn dust and water gives aldehydes.

Answer»

Both ASSERTION (A) and Reason (R) are CORRECT statements, and Reason (R) is the correct EXPLANATION of the Assertion (A). 
Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A). 
Assertion (A) is correct, but Reason (R) is incorrect statement. 
Assertion (A) is incorrect, but Reason (R) is correct statement

Answer :B


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