First slide
Types of reactions

For the following reactions

Which of the following statements is correct?


(a) is elimination, (b) is substitution and (c) is addition reaction.

(a) is elimination,
When an alkyl bromide is heated with alcoholic KOH solution, a molecule of HBr is eliminated to form C=C double bond.
(b) is substitution
When secondary alkyl bromide is heated with aqueous KOH, bromine atom is substituted with −OH group.
(c) is addition reaction
A molecule of bromine is added across C=C double bond.

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