A) there is no reaction
B) water gas is formed
C) \[S{{O}_{2}}\] and \[C{{O}_{2}}\] are evolved
D) CO and \[S{{O}_{2}}\] are evolved
Correct Answer: C
Solution :
Key Idea Cone. sulphuric acid is a good oxidising agent. Since, it gives nascent oxygen. \[{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}{{H}_{2}}O+S{{O}_{2}}+[O]\] When sulphuric acid is added to charcoal it oxidises carbon to carbon dioxide. Therefore, \[S{{O}_{2}}\] and \[C{{O}_{2}}\] are evolved. \[2{{H}_{2}}S{{O}_{4}}+C\xrightarrow{{}}2S{{O}_{2}}+C{{O}_{2}}+2{{H}_{2}}O\] Note - Sulphuric acid is a dibasic and it dehydrating agent, reducing agent and oxidising agent.
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