Chemistry - Single MCQs (Page 41)

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Q401. The purest form of iron is ?...Q402. Cassiterite is the ore of _________?...Q403. What is the chemical name of Vitamin E?...Q404. The chemical name of ‘oil of vitriol’ is?...Q405. What is the chemical name of Vitamin A?...Q406. A burning matchstick is brought in contact with hydrogen gas ?...Q407. Which of the following is the best fuel in terms of energy released per gram of ...Q408. Spirit in contact with body gives cool sensation because it is ?...Q409. The element phosphorus makes what part of human weight ?...Q410. Which amongst the following is not a Cation?...