कैलोमल का रासायनिक सूत्र है ? - What is the chemical formula of calomel? - callomel Ka Rasayanik Sutra Hai ? General Science in hindi, Chemistry HgCl₂ question answers in hindi pdf HgS questions in hindi, Know About HgCl₂ General Science online test General Science notes in hindi quiz book HgSO₄
A B both are equel
Answer B
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