Q. Which of the following processes can remove both temporary as well as permanent hardness of water ?

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Q. Dacron is a

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Q. Rancidity of the fatty oil can be reduced by its

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Q. Fatty material used in soap making is

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Q. __________ glass is used for the manufacture of optical glass.

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Q. Favourable conditions for the liquefaction of gases in general are

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Q. In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed :

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Q. __________ nature of hypo (sodium thiosulphate) makes it useful in photography.

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Q. __________ is an ore of lead.

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Q. Which of the following is an yellow pigment ?

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Q. Catalytic oxidation of toluene produces

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Q. SO₂ is bubbled through hot sugar cane juice to

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Q. A mineral is termed as 'ore', if

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Q. In the manufacture of H₂SO₄, vanadium catalyst as compared to platinum catalyst

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Q. At a given temperature, the equilibrium yield of SO₃ obtained from the oxidation of SO₂ is proportional to (where, P = pressure of the system )

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Q. Oleum produces fumes of

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Q. 20% oleum means that in 100 kg oleum, there are 20 kg of

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Q. Which of the following paper does not require a filler during manufacture ?

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Q. Industrial production of chloroform requires acetone and

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Q. Pencillin, an antibiotic drug was discovered by

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