Explanation:
1) 2-methyl prop-1-ene
2) 4-methyl hex-2-ene
3) 2-methyl pent-1-ene
4) 4-propyl hept-3-ene
5) 5-ethyl-4-methyl hept-2-ene
6) 6-methyl-4-propyl oct-1-ene
7) 4,5,6-trimethyl oct-2-ene
