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Chain Isomerism

Identify the ...

Question

Identify the IUPAC names of chain isomers of pentene:

A

2-methyl-2-butene

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B

2-methyl-2-propane

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C

2, 2-dimethyl-2-propane

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D

3-methyl-1-butene

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Solution

The correct options are
C 3-methyl-1-butene
D 2-methyl-2-butene
The chain isomer of pentene must have same chemical formula but different structural formula.
Compound (A) satisfies the requirement of chain isomer.
Compound (B) has only four carbon atoms and lacks a double bond.
Compound (C) lacks a double bond.
Compound (D) satisfies the requirement of chain isomer.

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Q. From the list of alkenes given below, identify the alkenes which on ozonolysis give only ketones.
(a) 2 methyl-1-butene
(b) 1-butene
(c) 2,3-dimethyl-2-butene
(d) 3-methyl-2-pentene
(e) 3,4-dimethyl-3- hexene
(f) 2,5-dimethyl-2,4-hexadiene

Q. From the list of alkenes given below, identify the alkenes which on reductive ozonolysis given only ketones.
(a) 2-methyl-1-butene
(b) 1-butene
(c) 2,3-dimethyl-2-butene
(d) 3-methyl-2-pentene
(e) 3,4-dimethyl-3-hexene
(f) 2,5-dimethyl-2,4-hexadiene

Q. 1-Pentene and 3-methyl-1-butene are _______ .

Q. Which among the following compounds show geometrical isomerism?
I) 1 - butene
II) 2 - butene
III) 2 - methyl - 2 - butene
IV) 2 - pentene

Q. Which isomerism relates 2-methyl-1-butene and 2-methyl-2-butene?

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