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Isotopes of Carbon

Which of the ...

Question

Which of the following is an isomeric pair?

A

Ethane and propane

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B

propane and 1-methylbutane

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C

butane and 2-ethylpropane

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D

butane and 2-methylpropane

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Solution

The correct option is D butane and 2-methylpropane
The number of carbon atoms in butane and 2-methylpropane is same.
Butane is a linear hydrocarbon with 4 carbon atoms.

2-methylpropane has propane as its main hydrocarbon chain where a methyl group is attached to the middle carbon atom.

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Similar questions

Q. The hydrocarbon 2-methylbutane is an isomer of:
(a) n-pentane
(b) n-butane
(c) propane
(d) iso-butane

Q. What type of isomerism exists between the following pairs of compounds?
(i) Pentan-1-ol and 3-Methylbutan-1-ol
(ii) Ethanol and Dimethyl ether
(iii) Butan-1-ol and Butan-2-ol

Q. Give R and S configurations of each pairs ofenatiomers of -2-Fluoropropane ,2-Methylbutane , 2-Bromopentane, 3-Methylpentane

Q. Consider the dehydrohalogenation of

2

- b r o m o -

- m e t h y l b u t a n e

with ethoxide and

t e r t - b u t o x i d e

. Which of the following statements is true?

Q. Three different isomeric alkenes

A, B

C

has molecular formula

C_{5} H_{10}

and all on hydrogenation yields 2-methylbutane Also heat evolved in their hydrogenation is in the order of

A < B < C .

Deduce structures of

A, B

C

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