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CBSE

NEET Chemistry : Aldehydes, Ketones and Carboxylic Acids

Multiple Choice Questions

121.

Cannizaro's reaction is exhibited by :

HCHO
CH₃CHO
CH₃CH₂CHO
CH₃CH₂CH₂CHO

122.

Cannizaro reaction is not given by :

acetaldehyde
formaldehyde
benzaldehyde
triethyl acetaldehyde

123.

The product P is

None of these.

124.

Which of the following reaction will not produce ethylene glycol?

ClCH₂CH₂Cl $\to_{heat}^{{OH}^{-}}$
HO-CH₂-CH₂-OCH₃ $\to_{heat}^{{OH}^{-}}$
CH₂= CH₂ $\to_{{KMnO}_{4}}^{alkaline}$

125.

126.

The increasing order of acidity is :

CHCl₂COOH , CH₂ClCOOH , CH₃COOH
CH₃COOH , CHCl₂COOH , CH₂ClCOOH
CH₂BrCOOH , CH₂ClCOOH , CH₃COOH
CH₂BrCOOH , CH₂ClCOOH , CHCl₂COOH

127.

Assertion : Mixture of benzaldehyde and acetaldehyde in hot allkaline medium gives cinnamaldehyde.

Reason : Benzaldehyde is strong electrophile than acetaldehyde.

If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.

128.

An aromatic compound C₇H₆Cl₂(A), gives AgCl on boiling with alcoholic AgNO₂ solution and yields C,HOCI on treatment with sodium hydroxide. (A) on oxidation gives monochlorobenzoic acid. The compound (A) is: