Question

Indicate the $\sigma$ and $\pi$ bonds in the following molecules.
$C_6{H}_6,C_6{H}_{12},C{H}_{2}C{l}_2,C{H}_2=C=C{H}_2,C{H}_{3}N{O}_2,HCONHC{H}_3$

Answer 1

Benzene contains 6 $C-C$ sigma bonds, 3 $C=C$ pi bonds and six $C-H$ sigma bonds respectively.
Cyclohexane contains 6 $C-C$ sigma bonds and 12 $C-H$ pi bonds.
Dichloromethane contains 2 $C-H$ sigma bonds and 2 $C-Cl$ sigma bonds.
Allene contains 2 $C-C$ sigma bonds, 2 $C=C$ pi bonds and 4 $C-H$ pi bonds.
Nitromethane contains 3 $C-H$ sigma bonds, 1 $C-N$ sigma bond, 2 $N-O$ sigma bonds and 1 $N=O$ pi bond.
N-methyl formamide contains 2 $C-N$ sigma bonds, four $C-H$ sigma bonds, one $N-H$ sigma bond, one $C-O$ sigma bond and one $C-O$ pi bond.