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The reaction of concentrated sulphuric acid with carbohydrates ($C_{12}H_{22}O_{11}$) is an example of
A
Sulphonation
B
Dehydration
C
Oxidation
D
Reduction
Detailed Solution
Concentrated sulphuric acid removes water from carbohydrates such as sucrose ($C_{12}H_{22}O_{11}$), charring it to carbon — this demonstrates the strong dehydrating property of concentrated $H_2SO_4$.