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रसायन विज्ञान प्रश्नोत्तर Chemistry Quiz -5

Cheistry Quiz प्रश्न :- इस्पात में कितना प्रतिशत कार्बन है ? (A) 3 %  (B) 4 %  (C) 2 %  (D) 5 % Ans:- (C) 2 % प्रश्न :- कौन-सी धातु है जो अधिक ताप पर भी ऑक्सीजन से अभिक्रिया...

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