The reaction :

C₂H₅OH $\to$ SOCl₂ $\stackrel{\mathrm{Pyridine}}{\to }$ C₂H₅Cl + SO₂ + HCl is known as :

• Kharasch effect

• Williamson's synthesis

• Darzen's procedure

• Hunsdiecker reaction

Among the following the dissociation constant is highest for

• C₆H₅OH

• C₆H₅CH₂OH

• CH₃C$\equiv$CH

• CH₃NH₃⁺Cl

Assertion : 2-bromobutane on reaction with sodium ethoxide in ethanol gives 1-butene as a major product.

Reason : 1-butene is more stable than 2-butene.

• 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 : The major products formed by heating C₆H₅CH₂OCH, with HI are C₆H₅CH₂I and CH₃OH.

Reason : Benzyl cation is more stable than methyl cation.

• 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 : Benzyl bromide when kept in acetone water it produces benzyl alcohol.

Reason : The reaction follows S_N2 mechanism.

• If both assertion and reason are true and the reason is the correct explanation of the assertion.

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

• If assertion is true but reason is false.

• If both assertion and reason are false.

316.

Assertion : Hydroxyketones are not directly used in Grignard reaction.

Reason : Grignard reagents react with hydroxyl group.

• If both assertion and reason are true and the reason is the correct explanation of the assertion.

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

• If assertion is true but reason is false.

• If both assertion and reason are false.

Assertion : Trans-2-butene on reaction with Br₂ gives meso-2,3-dibromobutane.

Reason : The reaction involves syn -addition of bromine.

• If both assertion and reason are true and the reason is the correct explanation of the assertion.

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

• If assertion is true but reason is false.

• If both assertion and reason are false.

In a mixture, two enantiomers are found to be present in 85% and 15% respectively. The enantiomeric excess (ee) is

• 85%

• 15%

• 70%

• 60%

The IUPAC name of the compound having the formula CCl₃CH₂CHO is

• 2, 2, 2-trichloropropanal

• 1,1, 1-trichloropropanal

• 3, 3, 3-trichloropropanal

• 1, 2, 1-dichloromethanal

Best reagent for nuclear iodination of aromatic compounds is

• KI/ CH₃COCH₃

• I₂/CH₃CN

• KI/ CH₃COOH

• I₂ / HNO₃