Boiler scales' contain

Question

Boiler scales' contain

A. calcium carbonate

B. magnesium bicarbonate

C. calcium sulphate

D. magnesium sulphate

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Diamonds are weighed in

A. grams

B. pounds

C. carats

D. tons

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One of the ingredients of the paste on the side of a match box is

A. phosphorus pentaoxide

B. phosphorus trichloride

C. phosphorus trisulphide

D. phosphorus trioxide

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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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The formula for cane sugar is

A. C6H12O6

B. C2H5OH

C. C12H22O11

D. C7H8O

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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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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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Dry Ice is

A. solid carbon dioxide

B. liquid oxygen

C. liquid hydrogen

D. liquid. Chlorine

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Proteins are polymerisation products of

A. aldehydes

B. alkenes

C. amino acids

D. alkynes

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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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A mixture of ethyl alcohol and water can be separated by

A. evaporation

B. sublimation

C. using a separating funnel

D. fractional distillation

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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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Which or the following electrolysis?

A. Aluminium

B. Copper

C. Zinc

D. Iron

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Invar, used for making pendulums is an alloy of steel with

A. tungsten

B. nickel

C. manganese

D. chromium

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CAN is used as (Calcium Ammonium Nitrate)

A. an explosive

B. a fertilizer

C. a dye

D. a bleaching agent

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A hormone which contains iodine is

A. adrenalin

B. glucagon

C. epinephrin

D. thyroxin

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In the mouth, starch is converted into ______ by the action of saliva.

A. sucrose

B. glucose

C. fructose

D. mannose

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Which one of the following gases is extremely soluble in water?

A. Carbon dioxide

B. Ammonia

C. Chlorine

D. Hydrogen sulphide

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Which of the following is used as a food preservative?

A. phenol

B. washing soda

C. absolute alcohol

D. vinegar

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The name rubber was given by

A. Lavoisier

B. Priestley

C. Dalton

D. Avogadro

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The commonest ore of aluminium is

A. cryolite

B. bauxite

C. malachite

D. azurite

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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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Which of the following la a very good supporter of combustion?

A. Carbon monoxide

B. Oxygen

C. Nitrogen

D. Hydrogen

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The principle involved in dialysis, a treatment administered to patients with affected kidneys is

A. Cataphoresis

B. Osmosis

C. Dehydration

D. Diffusion

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The non-metal which is electropositive is

A. chlorine

B. nitrogen

C. sulphur

D. hydrogen

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Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance?

A. Aluminium

B. Chromium

C. Nickel

D. Tungsten

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Lead pencils contain

A. white lead

B. graphite

C. red lead

D. coke

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Sulphur is readily soluble in

A. Water

B. Alcohol

C. Carbon-di-sulphide

D. Sodium chloride solution

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Radium was isolated from

A. galena

B. dolomite

C. sylvine

D. pitchblende

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Which of the following is baking soda?

A. Na2CO3 . 10H2O

B. NaHCO3

C. Na2CO3 . H2O

D. NH4CI

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The compound or nitrogen used in dry cells is

A. ammonia

B. ammonium nitrate

C. ammonium chloride

D. ammonium nitrite

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Accepted Answer

A. calcium carbonate

Boiler scales' contain

Correct Answer :

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Related Questions

Diamonds are weighed in

One of the ingredients of the paste on the side of a match box is

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