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Current Affairs January 2024

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Which of the following process involves removal of the elements of water?

A. Hydrolysis

B. Hydrogenation

C. Dehydration

D. Dehydrogenation

Correct Answer :

C. Dehydration


Related Questions

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Iodine in alcohol is known as

A. quick lime

B. tincture iodine

C. rectified spirit

D. None of these

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Which among the following is a metalloid?

A. Tin

B. Silver

C. Iodine

D. Arsenic

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Galvanised iron sheets are protected from rusting due to the presence of a layer of

A. lead

B. chromium

C. zinc

D. tin

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Petroleum ether is also known as

A. kerosene

B. naphtha

C. lubricating oil

D. asphalt

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Setting of cement is due to

A. hydration

B. dehydration

C. dialysis

D. osmosis

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In the process of purification of water for town supply, the substance used to remove bad smell and colour from water is

A. charcoal

B. bleaching powder

C. chlorine

D. carbolic acid

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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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A metal which occurs 'free' in nature is

A. gold

B. zinc

C. tin

D. molybdenum

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The neutron was discovered by

A. Chadwick

B. Madam Curie

C. Becquerel

D. Aston

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The non-metal which has a shining appearance is

A. sulphur

B. phosphorus

C. iodine

D. bromine

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The science which deals with the chemistry of life processes is known as

A. electrochemistry

B. physical chemistry

C. biochemistry

D. tinctorial chemistry

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On chemical analysis, a bottle cork is found to contain primarily

A. proteins

B. carbohydrates

C. tannins

D. lipids

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Which of the following is used as an illuminant?

A. Gasoline

B. Benzoline

C. Kerosene

D. Petroleum ether

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Iron is coated with zinc to prevent rusting. The process is called

A. annealing

B. tempering

C. calcining

D. galvanising

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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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The form of carbon used in decolourising sugar solution is

A. wood charcoal

B. animal charcoal

C. coconut charcoal

D. lamp black

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Which of the following is not a supporter of combustion?

A. Oxygen

B. Air

C. Hydrogen

D. Chlorine

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Which of the following is not a chemical change?

A. Rusting of iron

B. Burning of magnesium

C. Sublimation of iodine

D. Electrolysis of water

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________ is left behind after distillation of petroleum.

A. Arsenic

B. Barium

C. Benzene

D. Bitumen

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The chemical name of aspirin is

A. acetamide phenol

B. malonyl urea

C. aminosalicylic acid

D. acetyl salicylic acid

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The metal which reacts most violently with cold water is

A. calcium

B. sodium

C. magnesium

D. potassium

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In the common soda-acid fire extinguisher, the fire is put out by

A. acid fumes

B. sodium bicarbonate

C. carbon dioxide

D. sodium carbonate

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The value of Avogadro Number is

A. 6.023 x 1022

B. 1 x 10-14

C. cl 6.056 x 10-6

D. 6.023 x 1023

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Which one of the following metals is used to extract another metal?

A. Lead

B. Tin

C. Zinc

D. Aluminium

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The atomic number of an element represents

A. number of neutrons in the nucleus

B. number of protons and neutrons in the nucleus

C. the valency of the element

D. number of protons in the nucleus

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A non-material kind of pollution is

A. land pollution

B. air pollution

C. noise pollution

D. water pollution

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A compound of carbon used as anaesthetic is

A. carbon disulphide

B. carbon tetrachloride

C. phosgene

D. chloroform

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Which of the following is not a characteristic of potable water?

A. It must be free from suspended impurities

B. It must be free from harmful bacteria

C. It must contain traces of sodium bicarbonate

D. It must have a fishy odour

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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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A hormone which contains iodine is

A. adrenalin

B. glucagon

C. epinephrin

D. thyroxin