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IUPAC System of Nomenclature

According tp ...

Question

According tp IUPAC, the nomenclature of the following compound?

A

1-Ethylbutane

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B

2-Methylbutane

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C

1-Methylpentane

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D

2-Methylpentane

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Solution

The correct option is B 2-Methylbutane
While numbering, the longest continuous carbon chain will get the highest priority. So the correct nomenclaature will be
2-Methylpropane.

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Similar questions

Write structures of the compounds whose IUPAC names are as follows.
(a). 2-methylbutan-2-ol

(b). 1-phenylpropan-2-ol

(c). 3,5-dimethylhexane-1,3,5-triol

(d). 2,3-diethylphenol

(e). 1-ethoxypropane

(f). 2-ethoxy-3-methylpentane

(g). Cyclohexylmethanol

(h). 3-cyclohexylpentan-3-ol

(i). Cyclopent-3-en-1-ol

(j). 3-chloromethylpentan-1-ol

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 the structure of the following IUPAC name:
2-Methylpentane-2,4-diol

Which of the following represents the correct IUPAC name for the compounds concerned?

2, 2-Dimethylpentane or 2-Dimethylpentane

2,4,7- Trimethyloctane or 2,5,7- Trimethyloctance

2-Chloro-4-methylpentane or 4-Chloro-2-methylpentane

But-3-yn-1-ol or But-4-ol-1-yne

Q. Write structures of the following compounds:
(i) 2-Chloro-3-methylpentane

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IUPAC System of Nomenclature

Standard XII Chemistry

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