chemistry – Just Crack Interview

Ques:- An equeous solution of Borax is

A. Alkalene

B. Acidic

C. Corrosive

D. Neutral

Ques:- A device used for the measurement of radioactivity is

A. G.M. counter

B. Nuclear reactor

C. Cyclotron

D. Mass spectrometer

Ques:- The molasses (sugar gravey) is an excellent example of

A. Urea

B. Power alcohol

C. Glycerine

D. Acetic acid

Ques:- Sulphur reacts with sodium hydroxide to form

A. Sodium sulphite

B. Sodium thiosulphate

C. Sodium sulphide

D. Sodium sulphate

Ques:- The element nickel is a

A. Complex element

B. Non magnetic metal

C. Magnetic metal

D. Radioactive metal

Ques:- Which of the following valency is not exhibited by sulphur?

A. 2

B. 3

C. 4

D. 6

Ques:- Paper is manufactured by

A. Wood, calcium, hydrogen sulphate and resin

B. Wood and bleaching powder

C. Wood, sodium and bleaching powder

D. Wood and resin

Ques:- The percentage of gold in 18 carats gold is

A. 25%

B. 75%

C. 91.6%

D. 100%

Recent Answer : Added by Keziah On 2021-08-28 11:27:04:

75%

Ques:- The water hydrolysis of oil by the alkalies is called

A. Acetylisation

B. Soapification

C. Polymerization

D. Esterification

Ques:- The alloy used in making space satellites is

A. Bronze

B. Magnalium

C. Duralumin

D. Aluminium bronze

Ques:- Which among the following is a solid non-metal?

A. Iodine

B. Water

C. Mercury

D. Chlorine

Ques:- The lustrous non metal is

A. Boron

B. Phosphorus

C. Iodine

D. Sulphur

Ques:- Which of the following is used in dry cleaning

A. Hydroxic benzene

B. Chloro benzene

C. Benzene

D. Nitrobenzene

Ques:- Name the chemical reagent to which glass does not have resistance.

A. Hydroiodic acid

B. Hydrobromic acid

C. Hydrofluoric acid

D. Hydrochloric acid

Ques:- A metal which is extracted by thermal reduction is

A. Calcium

B. Mercury

C. Aluminium

D. Nickel

Ques:- Concentrated solution of sodium chloride is called

A. Mineral water

B. Brine

C. Saline water

D. Sterilized water

Recent Answer : Added by Keziah On 2021-08-28 11:27:02:

Brine

Ques:- Which one of the following is used as a mordant in dying and tanning industry?

A. Magnesium sulphate

B. Magnesium chloride

C. Magnesium carbonate

D. Magnesium oxide

Ques:- Which one of the following is not biodegradable?

A. Jute basket

B. Leather bag

C. Woolen mat

D. Silver Foil

Ques:- Soda water contains

A. Nitrous acid

B. Carbon dioxide

C. Carbonic acid

D. Sulphuric acid

Ques:- Which of the following is used as a coolant in nuclear reactors?

A. Graphite

B. Liquid sodium

C. Cadmium

D. Heavy water

Ques:- Which one of the following is not radioactive?

A. Astatine

B. Zirconium

C. Tritium

D. Francium

Ques:- Which of the following is a non-metal that remains liquid at room-temperature?

A. Phosphorus

B. Helium

C. Chlorine

D. Bromine

Ques:- Which of the following is to be found in the tomato sauce?

A. Acetic acid

B. Oxalic acid

C. Lactic acid

D. Citric acid

Ques:- When acetone is reduced with zinc amalgam and HCL, it gives

A. Propane

B. Propan-1-ol

C. Propan-2-ol

D. Propan-2-al

Ques:- Which of the following is halogen?

A. Cesium

B. Ruthenium

C. Astatine

D. Radon

Ques:- The gases used in the respiratory activities of sailors (divers) are

A. Oxygen and neon

B. Oxygen and argon

C. Oxygen and helium

D. Oxygen and nitrogen

Ques:- Oxidation involves

A. gain of hydrogen

B. gain in electrons

C. combustion

D. loss of electrons

Ques:- The two types of valencies of iron are

A. 1 and 2

B. 1 and 3

C. 2 and 3

D. 1 and 4

Ques:- Silicon exhibit diagonal relationship with

A. B

B. C

C. Be

D. Sr

Ques:- Cooking gas is a mixture of

A. Carbon monoxide and carbon dioxide

B. Butane and propane

C. Carbon dioxide and oxygen

D. Methane and ethylene