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Q.

Assertion (A) : Sodium salt of butanoic acid on heating with soda lime gives butane. 
Reason (R) : Decarboxylation reaction gives alkanes containing one carbon atom less than the parent acid.
 

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a

Both A and R are true but R is not the correct explanation of A.

b

Both A and R are true and R is the correct explanation of A.

c

A is false but R is true.

d

A is true but R is false.

answer is C.

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Detailed Solution

A is false but R is true. The correct form of A is: Sodium salt of butanoic acid on heating with soda lime gives propane. 

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Assertion (A) : Sodium salt of butanoic acid on heating with soda lime gives butane. Reason (R) : Decarboxylation reaction gives alkanes containing one carbon atom less than the parent acid.