A) nascent oxygen
B) chlorine
C) \[HClO\]
D) \[HCl\]
Correct Answer: A
Solution :
\[2CaCO{{l}_{2}}+\underset{\text{(limited)}}{\mathop{{{H}_{2}}S{{O}_{4}}}}\,\to CaC{{l}_{2}}+CaS{{O}_{4}}+2HClO\] \[HClO\xrightarrow{{}}HCl+[O]\] On account of evolution of nascent oxygen, it acts as an oxidising and bleaching agent.
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