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Alcohols, Phenols and Ethers

True Or False

341. State whether the followng statements are True or False:

Sodium reacts with ethyl ether.

More stable alkane is the preferred product in the dehydration of alcohols.

Upon heating with zinc dust, phenol is reduced to benzene.

In the presence of alkali (NaOH), ethyl alcohol reacts with Cl₂ to give ethane.

The most suitable method for the separation of a mixture of ortho and para nitrophenols mixed in the ratio of 1 : 1 is steam distillation.

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Multiple Choice Questions

342. Phenol on nitration with conc. HNO₃ form

2-nitro phenol
4-nitrophenol
3-nitrophenol
2, 4, 6-trinitrophenol

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343. CH₂ = CH—CH₂OH gives CH₂ = CH— CHO on reaction with

K₂Cr₂O₇/H₂SO₄
Cu/573 K
KMnO₄/NaOH
All the above.

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344. 2-Methyl-2-butanol on reaction with copper at 573 K. yields

2-Methyl-but-1-ene
2-Methyl-but-2-ene
2-Methyl butanal
3-methyl butan-2-ene.

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345.

Phenol is

A base weaker than ammonia
An acids stronger than carbonic acid
An acid weaker than carbonic acid
A neutral compound.

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346. In Williamson’s synthesis, ethoxyethane is prepared by

Passing ethanol over heated Al₂O₃
Heating sodium ethoxide with ethyl bromide
Treating ethyl alcohol with excess of H₂SO₄ at 440 K
Heating ethanal with dry Ag₂O.

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347. The reaction which involves dichloro carbene as an electrophile is

Reimer-Tiemann reaction
Kolbe’s reaction
Friedel-craft acylation
Kolbe-Schmidt reaction

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348. The compound which is least soluble in water is

$CH subscript 3 CH subscript 2 OH$
CH₂ = CH—OCH₂CH₃
CH₃—O—CH₃

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349.

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350.
2-Acetoxybenzoic acid
Methyl salicylate
Methyl benzoate
2-Methoxy benzoic acid

Methyl salicylate

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