a. ethane
    b. ethene
    c. ethyne
    d. ethyl alcohol

    b. ethene

    a. ethane
    b. ethene
    c. methane
    d.ethyne

    c. methane

    a. F2
    b. Cl2
    c. Br2
    d. I2

    a. F2

    a. hydrogen
    b. water
    c. halogen
    d. hydrogen halide

    b. water

    a. hydrogenation
    b. bromine water
    c. strong alkaline aq solution of KMnO4
    d. hydrohalogenation

    b. bromine water

    a. Br2 water
    b. Conc H2SO4
    c. Al2O3
    d. Alcoholic KOH

    d. Alcoholic KOH

    a. ethane
    b. ethene
    c. ethyne
    d. ethyl alcohol

    b. ethen

    a. Al2O3 at 350oC
    b. Conc H2SO4 at 170oC
    c. Zn + Dust
    d. Zn + HCl

    d. Zn + HCl

    a. combustion
    b. hydration
    c.dehydration
    d. hydrogenation

    d. hydrogenation

    a. C2H6
    b. C2H2
    c. C2H4
    d. C3H6

    a. C2H6