Q. __________ is an ore concentrating metallurgical process involving a chemical change.

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Q. Basic oxide is absent in __________ glass.

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Q. Graphite is a/an

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Q. Molasses is the starting material for the production of

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Q. BHC (Benzene hexachloride) is made by the chlorination of benzene

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Q. Diaphragm electrolytic cell as compared to mercury electrolytic cell

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Q. Calcareous & argillaceous materials are used in the manufacture of

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Q. Pick out the wrong statement.

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Q. __________ is used as a flux in the smelting of copper ore like chalcopyrite.

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Q. Hydrogenation of oil does not

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Q. Main constituents of cotton fiber is

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Q. CaCl(OCl) is the chemical formula of

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Q. In an integrated steel plant, NH₃ present in coke oven gas is normally recovered as

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Q. Flexible foam (for mattresses) is usually made of

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Q. Glycerine is a by-product of the __________ industry.

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Q. One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

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Q. Permanent hardness of water can be removed by

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Q. Chalcopyrite is the main ore of

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Q. The end bleaching agent used to move last traces of colour bodies from the pulp is

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Q. Bio-degradable detergents

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