Chlorine replaces hydrogen from the hydrocarbons to produce various products. This type of reaction is called ______ reaction.
A
substitution
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B
addition
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C
hydrogenation
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D
combination
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Solution
The correct option is A substitution The reaction in which one atom or a group of atoms is replaced by another atom or group of atoms is called substitution reaction. Here, hydrogen atom is replaced by chlorine atom to form a new compound. CH4(g)+Cl2(g)sunlight−−−−→CH3Cl(g)+HCl(g)
This process is endothermic because energy is absorbed.