Answer
See explanation
Work Step by Step
a) Addition reaction occurs here where two H atom is added to the two double bonded C atoms and the double bond breaks down to single bond.
b) substitution reaction occurs here where one H atom of ethane is substituted by Cl atom.
c) substitution reaction occurs here where one H atom of methyl chloride is substituted by a Cl atom.
d) substitution reaction occurs here where one H atom of chloroform is substituted by a Cl atom.
e) substitution reaction occurs here where one H atom of the benzene is substituted by a Br atom.
f) elimination reaction occurs here where one 'H' atom and one 'OH' groups are eliminated from adjacent two double bonded C atoms and a double bond is formed.
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a. Example reaction of production of alkane:
When ethylene ($CH_{2}=CH_{2}$) reacts with hydrogen ($H_{2}$) in presence of a catalyst like Ni, it gives rise to ethane ($CH_{3}-CH_{3}$) which is an alkane. The reaction is written below.
b. Example reaction of production of monohalogenated alkane:
When ethane ($CH_{3}-CH_{3}$) reacts with chlorine ($Cl_{2}$), ethyl chloride ($CH_{3}-CH_{2}-Cl$) is formed with side product HCl. Reaction is written below.
c. Example reaction of production of dihalogenated alkane:
When methyl chloride ($CH_{3}Cl$) reacts with chlorine ($Cl_{2}$), methylene chloride ($CH_{2}Cl_{2}$ is formed as a product with HCl. Reaction is written below.
d. When chloroform ($CHCl_{3}$) reacts with chlorine ($Cl_{2}$), carbon tetra chloride ($CCl_{4}$ is formed as a product with HCl. Reaction is written below.
e. When benzene ($C_{6}H_{6}$) reacts with bromine ($Br_{2}$) in presence of Fe as catalyst, it gives rise to bromobenzene($C_{6}H_{5}Br$) as main product along with hydrogen bromide (HBr).
f) When ethyl alcohol ($C_{2}H_{5}OH$) reacts with conc. $H_{2}SO_{4}$ in presence of heat, water is eliminated from ethyl alcohol and the product is ethylene ($CH_{2}=CH_{2}$).
