Select the correct statement(s).

• LiAlH₄ reduces methyl cyanide to methyl amine.

• Alkaline nitrile has electrophilic as well as nucleophilic centres

• Saponification is a reversible reaction.

• Alkaline hydrolysis of methane nitrile forms methanoic acids.

32.

In a Claisen condensation reaction (when an ester is treated with a strong base)

• a proton is removed from the α-carbon to form a resonance stabilised carbanion of the ester

• carbanion acts as a nucleophile in a nucelophilic acyl substitution reaction with another ester molecule

• a new C - C bond is formed

• All of the above statements are correct

An organic compound B is formed by the reaction of ethyl magnesium iodide with a substance A, followed by treatment with dilute aqueous acid. Compound B does not react with PCC or PDC in dichloromethane. Which of the following is a possible compound for A?

• 

• CH₃CH₂COCH₃

• CH₃COH

• H₂C=O

CH₃COCH₂CH₂COOCH₂CH₃ $\underset{\left(\mathrm{ii}\right) {\mathrm{H}}_3{\mathrm{O}}^{+}}{\overset{\left(\mathrm{i}\right) {\mathrm{CH}}_3\mathrm{MgBr} (\mathrm{one} \mathrm{mole})}{\to }}$ A

A formed in this reaction is

Which of the following does not undergo benzoin condensation?

C^* is with the product

• CO₂

• 

• Both (a) and (b)

• None of the above

Benzene diazonium chloride on treatment with hypophosphorus acid and water yield benzene. Which of the following is used as a catalyst in this reaction?

• LiAlH₄

• Red P

• Zn

• Cu⁺

Consider the following reaction sequence,

Isomers are

• C and E

• C and D

• D and E

• C, D and E

When a monosaccharide forms a cyclic hemiacetal, the carbon atom that contained the carbonyl group is identified as the ....... carbon atom, because

• D, the carbonyl group is drawn to the right

• L, the carbonyl group is drawn to the left

• acetal, it forms bond to an -OR and an -OR'

• anomeric, its substitutents can assume an α or β position

Which of the following is/are α-amino acid?

• 

• 

• Both (a) and (b)

• None of these