নিচের কোনটি জারণ- বিজারণ বিক্রিয়া?

A CaCO3→CaO+CO2

B 2H2S+SO2→2H2O+3S

C HF+KOH→KF+H2O

D NaCl+AgNO3→AgCl+NaNO3

Solution

Correct Answer: Option B

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