CH₃—CHO + HCN → A. Compound A on hydrolysis gives:

• CH₃—CH(OH)—COOH

• CH₃—CH₂—CH₂—NH₂

• CH₃—CO—COOH

• CH₃—CH₂—COOH

Which of the following does not undergo Cannizaro's reaction ?

• Benzaldehyde

• 2-methylpropanal

• p-methoxybenzaldehyde

• 2, 2-dimethylpropanal

An important industrial solvent, also a laboratory reagent called 2-butanone is nothing but:

• methyl ethyl ketone

• methyl propyl ketone

• dimethyl ketone

• diethyl ketone

Which one of the following compound reacts with chlorobenzene to produce DDT ?

• Acetaldehyde

• Nitrobenzene

• m-chloroacetaldehyde

• Trichloroacetaldehyde

165.

Conversion of benzaldehyde to 3-phenylprop-2-en-1-oic acid is:

• Perkin condensation

• Claisen condensation

• oxidative addition

• Aldol condensation

Oxidation of aldehydes gives :

• esters

• acids

• ethers

• alcohols

By combining the two calcium salts of carboxylic acids we are preparing 2-butanone. Find the correct pair of the following:

• calcium formate + calcium propanoate

• calcium acetate + calcium propanoate

• calcium acetate + calcium acetate

• calcium formate + calcium acetate

Which of the following can be used to differentiate between aldehyde and ketone ?

• Ammoniacal AgNO3

• Ammoniacal AgNO₃ in presence of tartarate ion

• I₂ in the presence of base

• Ammoniacal AgNO₃ in the presence of citrate ion

Acetonitrile $\stackrel{\mathrm{Hydrolysis}}{\to }$ ?

• acetic acid

• propionic acid

• formic acid

• None of these

Which of the following is used to detect aldehydes?

• Millon's test

• Tollen's reagent

• Neutral ferric chloride solution

• Molisch's test