गर्म करने पर कौन-सा यौगिक वाष्पशील है? (A) \( \mathrm{MgCl}_{2} \) (B) \( \mathrm{ZnCl}_{2} \) (...

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गर्म करने पर कौन-सा यौगिक वाष्पशील है?
(A) \( \mathrm{MgCl}_{2} \)
(B) \( \mathrm{ZnCl}_{2} \)
(C) \( \mathrm{HgCl}_{2} \)
(D) इनमें से कोई नहीं
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