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CBSE

Chemistry

NEET Chemistry : Aldehydes, Ketones and Carboxylic Acids

141.

Asssertion: CH₃-C(COOC₂H₅)=CH-COOH is 3-carbethoxy-2-butenoic acid.

Reason : Principal functional group gets lowest number followed by double bond or triple bond.

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.

142.

Prolonged exposure of fat or oil in moist air and light causes bad smell (rancidity). It is due to

143.

Identify Z in the reaction.

144.

The reaction C₂H₅ONa + C₂H₅I $\to$ C₂H₅OC₂H₅ + Nal is known as :

145.

Toluene on treatment with CrO₃ and (CH₃CO)₂O followed by hydrolysis with dil. HCl gives

146.

Which will give cannizaro reaction ?

147.

Assertion : Benzene on heating with cone. H₂SO₄ gives benzenesulphonic acid which when heated with superheated steam under pressure gives benzene.

Reason : Sulphonation is a reversible process.

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.

148.

Assertion : Aldol condensation can be catalysed both by acids and bases.

Reason : $β$ -Hydroxy aldehydes or ketones readily undergo acid catalysed dehydration.

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.

149.

2 - pentanone and 3 - pentanone can be distinguished by :

150.

Which of the following is an ester ?

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