Carboxylic acids may be prepared by the reaction of Grigrand reagents with .........

Carboxylic acid (A) is:

Toluene may be prepared by :

Butyronitrile may be prepared by heating

Butanenitrile may be prepared by heating

Carboxylic acids dimerise due to

Which of the acids cannot be prepared by Grignard reagent?

Assertion (A) Alcohol is a weaker acid than water. Reason (R) Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH.

Assertion (A) Ethanol is a weaker acid than phenol. Reason (R) Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH.