7 NOVEMBER 2021 CURRENT AFFAIRS QUIZ

Phenolic antiseptics are added in the __________ soap.

Shaving

Transparent

Metallic

Medicated

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Transparent soaps (e.g. Pears) are

Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency

None of these

Metallic soaps with frothing agent from which glycerine has not been recovered

Metallic soaps with frothing agent and free stearic acid to achieve transparency

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Hydrazine is largely used

As a starting material for 'hypo'

In photographic industry

As rocket fuel

In printing industry

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Thermal pyrolysis of ethylene dichloride produces

Vinyl chloride

Trichloroethylene

Ethylene oxide

Ethanol amine

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Which of the following is an ore of iron?

Hematite

Chalcopyrite

Galena

Bauxite

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Which of the following processes is absent in glass manufacturing process?

Annealing

Sintering

Shaping or forming

Melting

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Conversion of SO₂ to SO₃ in Monsanto 4-pass converter is about __________ percent.

100

98

80

90

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Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction?

Reduction of Na+ ions

Reduction of Cl- ions

Oxidation of Cl- ions

Oxidation of Na+ ions

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Chalcopyrite is the main ore of

Lead

Tin

Iron

Copper

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The purpose of tanning in leather industry is to

Smoothen the leather

Make it flexible

Impart water resistance

Stiffen the leather

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