If concentrated sulphric acid is added to sugar and warmed gently, the sugar changes from white to brown and finally to a black mas of carbon. In this reaction, concentrated sulphuric acid is acting as ?
a drying agent
an oxidizing agent
a dehydrated agent
a reducing agent
a hydrolysing agent
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In this reaction, concentrated sulphuric acid is acting as a **dehydrating agent**. When concentrated sulphuric acid is added to sugar and warmed gently, it removes water from the sugar in a highly exothermic reaction, leaving behind a black mass of carbon. So, the correct answer is **C**.
While sulphuric acid can act as an oxidizing agent and a hydrolysing agent in other reactions, in this specific reaction with sugar, its role is primarily as a dehydrating agent. It is not acting as a drying agent (which simply removes water from the surroundings), and it is not reducing anything, so options A and D are incorrect. Option E is also incorrect because the acid is not breaking any bonds with the addition of water, which is what hydrolysis involves.
