.

Benzoic acid is treated with lithium aluminium hydride. The compound obtained is

• benzaldehyde

• benzyl alcohol

• toluene

• benzene

Phenol and benzoic acid are distinguished by :

• NaOH

• NaHCO₃

• Na₂CO₃

• H₂SO₄

Assertion : 2-Butanol on heating with H₂SO₄ gives 1-butene and 2-butene.

Reason : Dehydration of 2-butanol follows Saytzeff's rule.

• 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 : Ethers behave as bases in the presence of mineral acids.

Reason : It is due to the presence of lone pair of electrons on the oxygen.

• 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.

416.

Assertion : Benzene diazonium salt on boiling with water forms phenol.

Reason : C- N bond is polar.

• 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.

Phenol on reaction with Br₂ gives :

• O - Bromo phenol

• p - Bromo phenol

• 2 , 4 , 6 tribromo phenol

• 1 , 3 , 5 tribromo benzene

Most acidic is :

Z $\stackrel{\mathrm{PCl}}{\to }$ X $\stackrel{\mathrm{alc}. \mathrm{KOH}}{\to }$ Y $\stackrel{\mathrm{conc}. {\mathrm{H}}_2{\mathrm{SO}}_4}{\to }$ Z

Here Z is :

• CH₃-CH₂-CH₂-OH

• (CH₃)₂-C-OH

• CH₃-CH(OH)-CH₃

• none of above

Compound reacting with alkaline KMnO₄ :

• (CH₃)₃-C-OH

• (CH₃)₂-CH-OH

• (CH₃)₃-C-CH₂OH

• none of the above