Which of the following is optically active?

n-propanal

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2-chlorobutane

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n-butanal

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3-pentanol

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Solution

The correct option is B 2-chlorobutane
For an optical activity, the compound should have a chiral carbon. Chiral carbon is a carbon whose all four valencies are satisfied by 4 different group.
2-chlorobutane contains one chiral carbon. So, it is optically active.

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Similar questions

Which is the correct increasing order of boiling points of the following compounds?

1-iodobutane , 1-bromobutane, 1-chlorobutane, Butane

(a) Butane < 1-chlorobutane < 1-bromobutane < 1-iodobutane

(b) 1-iodobutane < 1-bromobutane < 1-chlorobutane < Butane

(d) Butane < 1-chlorobutane < 1-iodobutane < 1-bromobutane

Butanal and 2-methyl propanal are examples of which type of isomerism?

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