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MCQs: A substance formed when two or more elements are mixed together without chemical reaction is known as
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MCQs: The third naturally occurring allotrope of carbon is
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MCQs: Hydrogen atoms do not have
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MCQs: In filtration the liquid (and anything dissolved in the liquid) passes through holes in the filter paper but the solid particles are too big and
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MCQs: Compounds always contain the same ratio of
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MCQs: It is used to make fertilizers, lead-acid batteries, and in many industrial processes and is called
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MCQs: At room temperature, mercury is the only metal that is in form of
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MCQs: The poor conductors of heat and electricity are
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MCQs: All compounds are molecules but not all molecules are
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MCQs: Except for one metal i.e. Mercury, rest of the metals are solids at
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MCQs: In first stage, crude oil is heated and changed into
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MCQs: Gas used in electrical generators as a rotor coolant is
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MCQs: This is a silvery-white, lightweight metal, it is soft and malleable and is called
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MCQs: The most important use of Sulphur is in the manufacture of
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MCQs: Hydrogen, helium, carbon, nitrogen are examples of
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MCQs: Concrete is a mixture of cement, gravels and water, which is used for
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MCQs: One of the softest materials in a form of carbon that is primarily used as a lubricant is called
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MCQs: The most common source of carbon is
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MCQs: An element used as fuel, and will become the future overall fuel is known as
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MCQs: Hydrogen causes a balloon to lift up in
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