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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MCQs: The element hydrogen is made from atoms containing a single proton and a single
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MCQs: A metal used in the manufacturing of car batteries is known as
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MCQs: If current is passed through water, the molecules of water will split into
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MCQs: In two-dimensional chromatography, the paper used is
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MCQs: An element can exist as either atoms or
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MCQs: The non-metals exist in two of the three states of matter i.e. gas and solid, at
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