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General Knowledge

Description: General knowledge question test for different exam entrance exams, school/college, ntse and Olympiad, job placements and other exams preparation and practice study materials
Number of Questions: 25
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Tags: G.K GK General Knowledge Job Placement Entrance Exams NTSE Olympiads GK Test Current Bank GK General Awareness Current Affairs Bank PO Clerical Exams Railways Exams Jobs Competitive Exams General Knowledge Questions General Knowledge for All IAS Preparation UPSC Preparation BANK PO Railway General Knowledge Civil Services Chemistry General Biology
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Which of the following minerals is used in nuclear reactors?

  1. Zircon

  2. Manganese ore

  3. Mica

  4. Bauxite


Correct Option: A

Among the following, which is the purest form of iron?

  1. steel

  2. white cast iron

  3. grey cast iron

  4. wrought iron


Correct Option: D

Which one of the following forms an irreversible complex with hemoglobin of the blood?

  1. carbon monoxide

  2. carbon dioxide

  3. pure nitrogen gas

  4. a mixture of carbon dioxide and helium


Correct Option: B

Which one of the following is an explosive?

  1. DDT

  2. TNT

  3. RDX

  4. LSD


Correct Option: C

To galvanise iron, iron is coated with which of the following?

  1. aluminium

  2. zinc

  3. galena

  4. silver


Correct Option: D

Which one of the following is used for bleaching purposes?

  1. Fluorine

  2. Chlorine

  3. Bromine

  4. Iodine


Correct Option: B

The presence of which of the following compounds causes temporary hardness of water?

  1. calcium bicarbonate

  2. sodium bicarbonate

  3. magnesium sulphate

  4. calcium carbonate


Correct Option: D

Which gas is present under pressure in soft drinks?

  1. oxygen

  2. nitrogen

  3. carbon dioxide

  4. nitrous oxide


Correct Option: C

Starch is a mixture of

  1. organic acids

  2. amino acids

  3. lipids

  4. carbohydrates


Correct Option: D

Which of the following is not a metal?

  1. iron

  2. zinc

  3. mercury

  4. boron


Correct Option: D

Rayon is chemically

  1. cellulose

  2. glucose

  3. amylase

  4. pectin


Correct Option: A

Which one of the following substances undergoes chemical change on heating?

  1. sodium chloride

  2. silica

  3. lead nitrate

  4. platinum wire


Correct Option: C

Marble is a changed form of which of the following?

  1. graphite

  2. coal

  3. limestone

  4. basalt


Correct Option: C

Which of the following compound is used in the manufacturing of baking powder?

  1. sodium carbonate

  2. silicon carbide

  3. calcium oxide

  4. sodium bicarbonate


Correct Option: D

By what name is water which contains soluble salts of calcium and magnesium is known?

  1. soft water

  2. heavy water

  3. hard water

  4. mineral water


Correct Option: C

Which solvent is used for dry-cleaning clothes?

  1. Acetone

  2. Rubbing alcohol

  3. Carbon tetrachloride

  4. Chloroform


Correct Option: B

The hardness of the bone tissue is due to the phosphates and carbonates of which of the following pairs of elements?

  1. calcium and sodium

  2. magnesium and sodium

  3. calcium and potassium

  4. calcium and magnesium


Correct Option: A

Which one of the following compounds is used as a sedative?

  1. potassium bromide

  2. calcium chloride

  3. ethyl alcohol

  4. phosphorous trichloride


Correct Option: A

Which one of the following is an anti-knocking agent added to petrol?

  1. ethyl alcohol

  2. white petrol

  3. tetraethyl lead

  4. butane


Correct Option: C

The chemical composition of marble is mostly

  1. calcium carbonate

  2. potassium carbonate

  3. sodium carbonate

  4. strontium carbonate


Correct Option: A

Which of the following sulphur compound is used as a bleaching agent in textile industry?

  1. carbon disulphide

  2. sulphur dioxide

  3. sulphuric acid

  4. hydrogen sulphide


Correct Option: B

Which radioactive pollutant occurs in building materials?

  1. plutonium

  2. thorium

  3. radon

  4. radium


Correct Option: B

Which of the following compounds are responsible for acid rain?

  1. nitrogen dioxide and silicon dioxide

  2. nitrogen dioxide and sulphur dioxide

  3. nitrogen dioxide and carbon monoxide

  4. silicon dioxide and carbon monoxide


Correct Option: B

Monazite is an ore of

  1. zirconium

  2. thorium

  3. titanium

  4. iron


Correct Option: B

Which quality of water makes it a good solvent of ionic salts?

  1. it has a high melting point

  2. it has a high dipole moment

  3. it has a high specific heat

  4. it has no colour


Correct Option: B
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