Q. The purpose of adding Na₂CO₃ to water of low alkalinity is to

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Q. Ca(OH)₂ is called

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Q. Percentage of uranium in carnotite ore found in Jadugoda (Jharkhand) is about

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Q. Potassium is kept & transported under

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Q. Anion exchanger is regenerated usually with

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Q. __________ is the major constituent of the Portland cement.

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Q. Catalytic oxidation of naphthalene produces

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Q. Parathion and Malathion are

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Q. Transparent soaps (e.g. Pears) are

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Q. Raw material used in alcohol distilleries in India is

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Q. Oil produced by solvent extraction

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Q. High acid value of an oil or fat is an indication of

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Q. Yeast is used in the manufacture of

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Q. Liquefaction of gases can not be done by

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Q. The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by

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Q. Bakelite is chemically known as

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Q. Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine ?

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Q. Phthalic anhydride is made by the

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Q. RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically

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Q. In the production of soda ash by Solvay process, the by-product is

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