Experts plzz solve this question......

Dear student, 

A 10 hydrogen atom is the hydrogen atom that is present in the primary carbon.
A 20 hydrogen atom is the hydrogen atom that is present in the secondary carbon and secondary carbon is that carbon that is bonded with two other carbon atoms.
A 30 hydrogen atom is the hydrogen atom that is present in the tertiary carbon and tertiary carbon is that carbon that is bonded with three other carbon atoms. 


Hence, the correct option is (B).

Regards

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