Q. Flux addition during smelting of ore is done to

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Q. Hydrazine is used in water treatment for the removal of

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Q. Direct conversion of chemical energy into electrical energy is done in a

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Q. Which of the following is not produced commercially from sea water ?

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Q. Pick out the wrong statement.

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Q. Salt is the basic raw material for the manufacture of

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Q. Pick out the wrong statement.

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Q. Hydrazine (N₂H₄) is used mainly as a/an

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Q. Hydrocynic acid (HCN) is used as an insecticide for

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Q. Molecular weight of plastics ranges from

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Q. Air used in aerobic fermentation must be sterilized, otherwise the

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Q. Alkylbenzene sulfonate (ABS) is a

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Q. Alcohol content in freshly prepared natural and fortified wine may be respectively around __________ percent.

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Q. Setting of plaster of paris is accompanied with

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Q. Commercial production of calcium carbide requires limestone and __________ as raw materials.

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Q. Which one of the following is not likely to be a constituent of vegetable oils ?

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Q. Nitroglycerene absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as a controlled explosive called dynamite. The raw material used for its manufacture are glycerene, nitric acid and

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Q. Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.

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Q. For the hydrogenation of oils __________ (A) __________ is commonly used as catalyst and __________ (B) __________ is a catalyst poison.

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Q. Main constituents of natural rubber is

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