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MCQs: Distillation is done to pass vapors through aromas and essence to make
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MCQs: The process of separating components of crude oil is known as
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MCQs: The substance that cannot be further broken down into smaller pieces is known as
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MCQs: Aircraft body uses a special metal. This metal is hard, light and have less density. This metal is
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MCQs: Aluminum is a good
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MCQs: The number of atoms of each element in a compound is known as
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MCQs: A substance made from two or more different elements that have been chemically joined is called
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MCQs: More than four-fifth of the natural elements are
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MCQs: Fractionating column is mainly used in the process of
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MCQs: To get salt from sea water, the solution is heated to
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MCQs: A substance that consists of one, two or more types of atoms chemically combined together is known as
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MCQs: Evaporation is great for separating a mixture (solution) of a soluble solid and a
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MCQs: The element found in the chlorophyll of the plants is
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MCQs: The gas used in respiration and manufactured in photosynthesis is
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MCQs: The three fundamental particles of the atom are
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MCQs: Liquefied form of oxygen is used as
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MCQs: A metal cheaper than copper and has a good conductivity of electricity, this metal is known as
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MCQs: The process that is easy to separate salt from sea water is known as
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MCQs: Chemical formula contains the symbols of elements present in the
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MCQs: The two substances mixed together without any chemical reaction form a
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