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.

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

Reason : $\mathrm{\beta }$-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.

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.

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

• Kolbe's synthesis

• Wurtz's synthesis

• Williamson's synthesis

• Grignard's synthesis

Identify Z in the reaction.

146.

Which of the following is an ester ?

• Coconut oil

• Kerosene oil

• Soap

• Glycerine

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

• benzaldehyde

• benzoic acid

• phenol

• phenylacetaldehyde.

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

• formation of C₆ - C₁₂ fatty acids

• formation of ketone and aldehyde

• both of these causes

• formation of glycerol.

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

• cannizaro's reaction

• iodoform reaction

• aldol condensation

• Clemmensen's reduction

Which will give cannizaro reaction ?

• Cl₃C-CHO

• C₆H₅CHO

• (CH₃)₃-C-CHO

• All of the above