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# Alcohols, Phenols and Ethers

#### Multiple Choice Questions

1.

Gammexane is

• benzene hexachloride

• bromo benzene

• benzyl chloride

• chlorobenzene

2.

What will be the product ,when carboxy phenol ,obtained by Reimer Tiemann's process ,is deoxidised with Zn powder ?

3.

A sample of CHCl3 before using as an anaesthetic is tested by

• AgNO3 solution after boiling with KOH

• Ammonical cuprous chloride

• Fehling solution

• AgNO3

4.

Dehydration of alcohol involves

• carbene

• carbanion

• carbonium ion

5.

Assertion: Phenol is a weaker acid than ethanol.
Reason: Groups with +M effect and -I effect decrease acidity at m-position.

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

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

• If the assertion is true but the reason is false.

• If both the assertion and reason are false.

6.

Which of following is the correct order of increasing reactivity?

• RCOOR' < RCOCl < RCONH2

• RCOOR' < RCONH2 < RCOCl

• RCOCl < RCONH2 < RCOOR'

• RCONH2 < RCOOR' < RCOCl

7.

Aniline on treatment with HCl and NaNO2 gives

• diazo salt

• nitroaniline

• chloroaniline

• aminophenol

8.

What is the name of reaction when benzaldehyde changes in to benzyl alcohol?

• Cannizzaro's reaction

• Wurtz reaction

• Kolbe reaction

• Friedel-Craft's reaction

# 9.Phenol , in Liebermann's nitroso test , give the colour :red yellow blue pink

C.

blue

Phenol gives Liebermann's nitroso test to give deep blue colour due to the formation of sodium salt of indophenol .

Phenol  Blue $\stackrel{\mathrm{HOH}}{\to }$ Red $\stackrel{\mathrm{NaOH}}{\to }$

10.

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

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

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

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

• If the assertion is true but the reason is false.

• If both the assertion and reason are false.