माचिस की तीलियों के ऊपर किसका मिश्रण लगाया जाता है?
(A) \( \mathrm{S}+\mathrm{K} \)
(B) \( \math...
माचिस की तीलियों के ऊपर किसका मिश्रण लगाया जाता है?
(A) \( \mathrm{S}+\mathrm{K} \)
(B) \( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}+\mathrm{K}+\mathrm{S} \)
(C) \( \mathrm{Sb}_{2} \mathrm{~S}_{3} \)
(D) \( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}+\mathrm{S}+ \) सफेद \( \mathrm{P} \)
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