Number of secondary carbon atoms present in the above compounds are respectively :
A
6, 4, 5
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B
4, 5, 6
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C
5, 4, 6
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D
6, 2, 1
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Solution
The correct option is A 6, 4, 5 Benzene contains 6 secondary carbon atoms. o-xylene contains 4 secondary carbon atoms, 2 primary carbon atoms and 2 tertiary carbon atoms. Toluene contains 5 secondary carbon atoms, 1 primary carbon atom and 1 tertiary carbon atom. A primary carbon atom is attached to only one other carbon atom. A secondary carbon atom is attached to two other carbon atoms. A carbon atom is attached to three other carbon atoms A quaternary carbon atom is attached to four other carbon atoms.