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Important Questions on Chemistry

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_____ is the process of allowing particles in suspension in water to settle out of the suspension under the effect of gravity.
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______ is one of the most important technique for the separation of a mixture by passing it in solution or suspension through a medium in which the components move at different rates.
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Which fibre among the following is used to make rayon clothing?
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Which among the following is the dangerous Green House Gas, created by the waste water?
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The process of separation of pure water from impurities is called?
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When Sulphur is heated with rubber, the process is commonly known as
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Which of the following gases turn water milky?
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The monomer/monomers used for the synthesis of Nylon 6 is/are
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Which of the following is also known as Epsom salt?
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Which of the following is used to remove the green colour from glass?
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Which one of the following chemical reactions is not feasible?

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Baking powder is a mixture of_____and_____?
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 Very small insoluble particles in a liquid may be separated from it by using
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Which of the following elements’ salts are most soluble?
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Employing Chromatography, one cannot separate _____.

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A solution contains 20g of solute in 180g of solvent. If the solvent is water, what is the concentration of the solution in terms of mass by mass percentage?
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Which one of the following substances do silver articles react with, that makes the silver articles black?
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Which among the following is a non-biodegradable waste?
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The process of separation of pure water from impurities by selective boiling is called_____.
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The process of converting sugar into alcohol is called _____: