Q. Fire clay is __________ refractory material.

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Q. Dechlorination of treated water is necessary to

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Q. Extraction of __________ employs an electrolytic process.

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Q. Fermentation is adversely affected by the

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Q. Naphthols are derivates of

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Q. Nitric acid is not used in the manufacture of

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Q. The compressive strength of cement should not be less than about 110 Kg/cm² after three days & not less than 170 Kg/cm² after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm²/gm.

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Q. Shaving soaps are

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Q. The yield of tar from high temperature carbonisation of dry coal is about __________ percent.

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Q. Which of the following is an unsaturated fatty acid ?

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Q. Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on

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Q. __________ process is used for producing soda ash.

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Q. Penicillin is separated from fermented broth by

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Q. Bitterns is a/an

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Q. In contact process, SO₃ is absorbed in 97% H₂SO₄ and not in water, because

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Q. Cation exchanger is regenerated usually with

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Q. Metallic soap is __________ salt of fatty acids.

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Q. Lubricating greases are a mixture of

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Q. Percentage of alcohol in beer may be around __________ percent.

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Q. Coloured glass is obtained by mixing of colored salts. Addition of __________ oxide is done to impart greenish blue color to the glass.

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