Chemistry - Single MCQs (Page 42)

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Q411. The lightest and simpliest atom is?...Q412. Amalgam is a mixture of metal with?...Q413. When candle burns the produced gasous products are?...Q414. Malachite is an ore of?...Q415. The wire used in a fuse has?...Q416. In Leclanche cell?...Q417. Which is the allotrope of carbon?...Q418. Bleaching powder is produced from?...Q419. CuSO4.5H2O is the chemical formula of?...Q420. When two carbon atoms share two electron pairs then they form?...