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Current Affairs January 2024

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Optical instruments are made of

A. pyrex glass

B. flint glass

C. quartz glass

D. Crooke's glass

Correct Answer :

C. quartz glass


Related Questions

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Vinegar is the trade name for

A. chloroform

B. acetic acid

C. phenol

D. carbon tetrachloride

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Mild steel contains

A. iron with very low percentage of carbon

B. iron with high percentage of carbon

C. iron and chromium

D. iron and manganese

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Biogas is obtained during

A. decomposition of petrol

B. fermentation of animal and plant waste

C. destructive distillation of coal

D. electrolysis of water

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The flux added in the blast furnace is

A. Limestone

B. FeO

C. SiO2

D. MgO

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The purest form of carbon is

A. animal charcoal

B. coal

C. wood charcoal

D. sugar charcoal

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Hard water does not lather well with soap because

A. it contains carbonates of calcium and magnesium

B. it contains sodium chloride

C. it is highly coloured

D. it contains suspended impurities

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The compound which is both an antiseptic and a disinfectant is

A. phenol

B. iodoform

C. bleaching powder

D. blue vitriol

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Methylated spirit is a mixture of

A. methyl alcohol and acetic acid

B. methyl alcohol and ethyl alcohol

C. ethyl alcohol and pyridine

D. methyl alcohol and pyridine

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An antipyretic is a drug used

A. in the treatment of malaria

B. to relieve sleepiness

C. to induce sleep

D. to lower body temperature

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Tincture iodine is

A. a disinfectant

B. an analgesic

C. a hypnotic

D. a dye

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Argyrol used as eye ointment is a solution of

A. hydrogen peroxide

B. silver nitrate

C. tincture iodine

D. m-cresol

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Calamine is a ore of

A. tine

B. magnesium

C. zinc

D. copper

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A mixture of carbon monoxide and hydrogen is

A. coal gas

B. producer gas

C. water gas

D. gobar gas

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Galvanising is the process of coating

A. iron with zinc

B. zinc with iron

C. copper with silver

D. silver with gold

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Galvanising is coating Iron with

A. nickel

B. zinc

C. chromium

D. copper

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The scientist associated with the discovery of the nucleus was

A. Rutherford

B. Moseley

C. Niels Bohr

D. J.J. Thomson

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An acid which is used as a preservative for pickles is

A. hydrochloric acid

B. citric acid

C. tartaric acid

D. acetic acid

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An example of thermo setting plastics is

A. bakelite

B. polythene

C. PVC

D. Teflon

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Real gases tend to become ideal Under

A. low pressure and high temperature

B. low pressure and low temperature

C. high pressure and low temperature

D. high pressure and high temperature

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________ is left behind after distillation of petroleum.

A. Arsenic

B. Barium

C. Benzene

D. Bitumen

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Which of the following is called 'the King of Chemicals?

A. Nitric acid

B. Hydrochloric acid

C. Silver nitrate

D. Sulphuric acid

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Beri-beri is caused by deficiency of Vitamin

A. A

B. C

C. B12

D. B1

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Which of the following is not a chemical change?

A. Burning of magnesium ribbon in air

B. Distillation of water

C. Heating of cane sugar

D. Setting of cement

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Rusting is

A. an oxidation process

B. a reduction process

C. a physical change

D. an electro-chemical process

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Which of the following is a regenerated fibre?

A. Terylene

B. Rayon

C. Nylon

D. Silk

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A valuable by-product in the manufacture of soap is

A. stearic acid

B. sodium hydroxide

C. palmitic acid

D. glycerol

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Which of the following cannot be used for the preparation of soap?

A. oleic acid

B. acetic acid

C. palmitic acid

D. stearic acid

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Vinegar is an aqueous solution of

A. oxalic acid

B. citric acid

C. acetic acid

D. hydrochloric acid

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Soda-water contains

A. sodium bicarbonate

B. sodium carbonate

C. carbonic acid

D. sodium hydroxide

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Rayon la made from

A. cotton

B. wool

C. cellulose

D. silk