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Alcohols, Phenols and Ethers

Short Answer Type

241.

Write chemical reaction of preparation of phenol from chlorobenzene.

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Long Answer Type

242.

Write the mechanism of hydration of ethene to yield ethanol.

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Short Answer Type

243. You are given benzene, conc. H₂SO₄ and NaOH. Write the equations for the preparation of phenol. Write the equations for the preparation of phenol using these reagents.

Benzene is heated with conc. H₂SO₄ for a long time and then treated with NaOH. Sodium benzene sulphate, C₆H₅SO₃Na formed is again strongly heated with NaOH at 575 K to give phenol. The reactions are,

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244. Show how will you synthesize:

1-phenylethanol from a suitable alkene.

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245. Show how will you synthesize:
cyclohexylethanol using an alkyl halide by an S_N2 reaction.

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246. Show how will you synthesize:
Pentan-1-ol using a suitable alkyl halide?

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Long Answer Type

247.

Give two reactions that show the acidic nature of phenol. Compare acidity of phenol with that of control?

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Short Answer Type

248. Explain how does the —OH group attached to a carbon of benzene ring activate it towards electrophilic substitution?

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249. Give equations of the following reactions:
Oxidation of propan-1-ol with alkaline KMnO₄ solution.

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250. Give equations of the following reactions:

Bromine in CS₂ with phenol.

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Previous Year Papers

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Test Yourself

Short Answer Type

Long Answer Type

Short Answer Type

243. You are given benzene, conc. H2SO4 and NaOH. Write the equations for the preparation of phenol. Write the equations for the preparation of phenol using these reagents.

Long Answer Type

Short Answer Type

243. You are given benzene, conc. H₂SO₄ and NaOH. Write the equations for the preparation of phenol. Write the equations for the preparation of phenol using these reagents.