(C) The sugar present in $DNA$ is $2$-deoxyribose. In ribose sugar,all carbon atoms ($C_1$ to $C_5$) are attached to an $-OH$ group. However,in $2$-de

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(C) The sugar present in $DNA$ is $2$-deoxyribose. In ribose sugar,all carbon atoms ($C_1$ to $C_5$) are attached to an $-OH$ group. However,in $2$-deoxyribose,the $-OH$ group at the $C_2$ position is replaced by a hydrogen atom $(-H)$. Therefore,the $C_2$ carbon atom does not contain an $-OH$ group.