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B
Sodium bicarbonate
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C
Sodium hydroxide
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D
(a) and (b) above.
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Solution
The correct option is A Benzene Aromatic hydrocarbons can be prepared by decarboxylation of aromatic acids.
Sodium salt of benzoic acid on heating with soda lime (NaOH+CaO) gives benzene.
The reaction is given as follows :