Haloalkanes and Haloarenes

Assertion : Aryl sulphunic acid gives phenol or reacting with NaOH at high temperature.

Reason : This reaction is electrophilic substitution reaction.

• 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: HC= C^- is more stable than H₂C $\equiv$CH^-
Reason : HC$\equiv$ C^- has more s-character than HC= CH^-

• 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.

Which of the following reaction follows S_N1 mechanism ?

• (CH₃)₂C-CH₂Cl + CH₂OK

• (CH₃)₂C-CH₂Cl + HCl

• (CH₃)₃C-Cl + NaOH

• (CH₃)₂CHI + H₂O

Find the product for

CH₃CH₂-O-CH₂-CH₂-O-CH₂-C₆H₅+ HI (excess)

• HO-CH₂CH₂OH, C₆H₅CH₂-I, CH₃CH₂-I

• C₆H₅CH₂-OH, CH₃CH₂-I, I-CH₂CH₂-OH

• I-CH₂CH₂-I, C₆H₅CH₂-I, CH₃CH₂-OH

• HO-CH₂CH₂-OH, C₆H₅CH₂-I, CH₃CH₂-OH

S_N2 reaction readily occurs in

• CH₃CH₂-O-CH₃

• CH₃-C(CH₃)₂-O-CH₃

• CH₂=CH-CH₂-O-CH₃

• Ph-CH₂-O-CH₂-CH₃

An alkyl halide reacts with alcoholic ammonia in a sealed tube , the product formed will be :

• a primary amine

• a secondary amine

• a tertiary amine

• a mixture of all the three

The major product of the following reaction is

The catalyst used in the preparation of an alkyl chloride by the action of dry HCl on an alcohol is :

• anhydrous AlCl₃

• Fecl₃

• anhydrous ZnCl₂

• Cu

In the reaction ,

R - X $\stackrel{\mathrm{Alcoholic} \mathrm{KCN}}{\to }$ B $\stackrel{\mathrm{Dilute} \mathrm{HCI} }{\to }$ B

The product B is :

• alkyl chloride

• aldehyde

• carboxylic acid

• ketone

CH₃CH=CHCH₃ + CHCl₃ + t-BuOK ➔ A. A is