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Standard XII

Chemistry

Enantiomers

The optically...

Question

The optically active compounds among the following are:
(i) 1-phenylethanol
(ii) 2-phenylpropan-1-ol
(iii) 2-phenylpropan-2-ol
(iv) 2-methylpropan-2-ol

(ii) and (iii)

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(i) and (ii)

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(iii) and (iv)

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(ii) and (iv)

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Solution

The correct option is B (i) and (ii)
Compound having a chiral carbon is optically active.

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Similar questions

Write structures of the compounds whose IUPAC names are as follows:

(i) 2-Methylbutan-2-ol

(ii) 1-Phenylpropan-2-ol

(iii) 3,5-Dimethylhexane −1, 3, 5-triol

(iv) 2,3 − Diethylphenol

(v) 1 − Ethoxypropane

(vi) 2-Ethoxy-3-methylpentane

(vii) Cyclohexylmethanol

(viii) 3-Cyclohexylpentan-3-ol

(ix) Cyclopent-3-en-1-ol

(x) 3-Chloromethylpentan-1-ol.

Q. Write structures of the compounds whose IUPAC names are as follows:
(i) 2-Methylbutan-2-ol (ii) 1-Phenylpropan-2-ol
(iii) 3,5-Dimethylhexane 1, 3, 5-triol (iv) 2,3 Diethylphenol
(v) 1 Ethoxypropane (vi) 2-Ethoxy-3-methylpentane
(vii) Cyclohexylmethanol (viii) 3-Cyclohexylpentan-3-ol
(ix) Cyclopent-3-en-1-ol (x) 4-Chloro-3-ethylbutan-1-ol.

Q. 1-phenylpropene is treated with

H_{2} O / H^{+}

The product is :

Q. How will you distinguish between the following pairs? Write chemical reactions.

(i)

C H_{3} O H

and

C_{2} H_{5} O H

(ii)Propan-1-ol and propan-2-ol

(iii)Propan-1-ol and 2-methylpropan-2-ol

(iv)Ethanol and propane-1-ol

How are the following conversions carried out?

(i) Propene → Propan-2-ol

(ii) Benzyl chloride → Benzyl alcohol

(iii) Ethyl magnesium chloride → Propan-1-ol.

(iv) Methyl magnesium bromide → 2-Methylpropan-2-ol.

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The optically active compounds among the following are: (i) 1-phenylethanol (ii) 2-phenylpropan-1-ol (iii) 2-phenylpropan-2-ol (iv) 2-methylpropan-2-ol

The correct option is B (i) and (ii)Compound having a chiral carbon is optically active.

The optically active compounds among the following are:
(i) 1-phenylethanol
(ii) 2-phenylpropan-1-ol
(iii) 2-phenylpropan-2-ol
(iv) 2-methylpropan-2-ol

The correct option is B (i) and (ii)
Compound having a chiral carbon is optically active.