H2C=C(CH3)-CH(CH3)-CH3
1) H2C=C(CH3)-CH(CH3)-CH3 + H2 ---> H3C-CH(CH3)-CH(CH3)-CH3
2) H2C=C(CH3)-CH(CH3)-CH3 + Br2 ---> H2CBr-CBr(CH3)-CH(CH3)-CH3
3) H2C=C(CH3)-CH(CH3)-CH3 + HBr ---> H3C-CBr(CH3)-CH(CH3)-CH3
4) H2C=C(CH3)-CH(CH3)-CH3 + H2O ---> H3C-C(OH)(CH3)-CH(CH3)-CH3