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Chlorine reacts with saturated hydrocarbons at room temperature in the 

(a) absence of sunlight 

(b) presence of sunlight 

(c) presence of water 

(d) presence of hydrochloric acid

Answers (1)

Answer: (b)

Solution:

Chlorine reacts with saturated hydrocarbon at room temperature in the presence of sunlight,

CH_{4}+Cl_{2}\overset{sunlight}{\rightarrow}CH_{3}Cl+HCl

CH_3Cl+Cl_{2}\overset{sunlight}{\rightarrow}CH_{2}Cl_{2}+HCl

CH_2Cl_{2}+Cl_{2}\overset{sunlight}{\rightarrow}CHCl_{3}+HCl

CHCl_{3}+Cl_{2}\overset{sunlight}{\rightarrow}CCl_{4}+HCl

Therefore, option (b) is correct.

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