Which of the following is called 'the King of Chemicals' ?
Answer: D
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The iron ore magnetite consists of
Answer: A
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The particle with 13 protons and 10 electrons is
Answer: B
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The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is
Answer: B
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Washing soda is
Answer: B
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Which have the maximum density ?
Answer: B
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In nuclear reactor the speed of neutrons is slowed down by
Answer: A
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The alpha-particles are
Answer: D
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The Most Important Ore of Aluminium is
Answer: D
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Gold and silver are extracted from their respective ores by _______
Answer: D
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