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रसायन विज्ञान प्रश्नोत्तर Chemistry Quiz -19

प्रश्न :- सूर्य में होता है ? (A) हाइड्रोजन व हीलियम (B) नाइट्रोजन (C) ऑक्सीजन (D) फॉस्फोरस Ans:- (A) हाइड्रोजन व हीलियम प्रश्न :- मानव शरीर में प्रचुर मात्रा में कौन-सा तत्व होता...

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