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प्रश्न
At the time of Mendeleev _______ elements were known.
पर्याय
56
65
63
118
MCQ
रिकाम्या जागा भरा
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उत्तर
At the time of Mendeleev 63 elements were known.
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
