Q. Benzamide is obtained from:

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A

Benzaldehyde and hydroxyl amine

B

Benzaldehyde and ammonia

C

Salicyclic acid ammonia

D

Benzonic acid and ammonia

Solution:

Reaction: $\underset{\text{Benzoic acid}}{C_6H_5 .COOH} + \underset{\text{Ammonia}}{NH_3} \rightarrow C_6H_5COONH_4 \xrightarrow{\Delta} \underset{\text{Benzamide}}{C_6H_5CONH_2} + H_2O$

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4. Which of the following is a Lewis acid ?

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5. The density of 2 M aqueous solution of NaOH is 1.28 g/cm$^3$. The molality of the solution is
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