General Science Basic Chemistry Quiz Online Test For Prep Questions with Answers Mcqs

Given over this page is a free online general science quiz which includes important Mcqs questions and answers related to the basic knowledge of Chemistry. All the individuals who are going to appear in any everyday science related written exam or interview are strongly recommended to use our tests as guide for easy and quick preparation.

General Science Basic Chemistry Quiz Online Test For Prep Questions with Answers Mcqs

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Basic Science

1. Which of the following gases is used in fire extinguishers?

Oxygen

Carbon dioxide

Water vapour

Hydrogen

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Question 1 of 20

2. Atom bomb is based on the principal of?

Nuclear fusion

Nuclear fission

All of these

None of these

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Question 2 of 20

3. In fireworks, the green flame is produced because of:

Sodium

Mercury

Barrium

Potassium

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Question 3 of 20

4. Which group of elements in the periodic table show highest first ionization potential. Elements in the:

All of these

Left hand bottom corner

None of these

Left hand top corner

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Question 4 of 20

5. Rise in temperature, the conductivity of metals will:

Remains unchanged

Decreases

Increases

None of these

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Question 5 of 20

6. Generally in a given period in the periodic table, as we move from left to right, the electropositive character of elements:

Increases

Neither increases nor decreases

Decreases

Decreases then Increases

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Question 6 of 20

7. During electrolysis, metals are deposited at the cathode, because the cathode,

Withdraw electrons

None of these

Undergoes oxidation

Supplies electrons

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Question 7 of 20

8. What is the chemical name of Baking Soda?

Sodium Nitrate

Sodium bicarbonate

Sodium Carbonate

Potassium

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Question 8 of 20

9. When we move from left to right in second period, the atomic volume of the element?

None of these

Increases

Increases with constant state

All of these

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Question 9 of 20

10. The reaction taking place at anode and cathode are respectively?

Reduction, hydrolysis

Reduction, Oxidation

None of these

Oxidation, reduction

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Question 10 of 20

11. Cooking gas is a mixture of which of the following two gases?

Oxygen and Methane

Oxygen and Nitrogen

Methane and Carbon dioxide

Bautane and Propane

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Question 11 of 20

12. When radioactive rays are passed through air or any gas, they cause it to:

Evaporate

Ionize

Freeze

Boil

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Question 12 of 20

13. Stains of rust from iron on cloth can be removed by:

Oxalic acid

Alcohol

Hydrogen peroxide

None of these

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Question 13 of 20

14. Ozone is present in which of the following layers of atmosphere:

Troposphere and Stratosphere

Mesosphere

Thermosphere

Troposphere and Thermosphere

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Question 14 of 20

15. The reason for chlorination of water is:

To kill germs

To add minerals

To propagate germs

To add taste

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Question 15 of 20

16. The liberation of energy in sun is due to?

Fusion reaction

None of these

All of these

Fission reaction

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Question 16 of 20

17. X-rays are produced when a stream of electrons in an X-ray tube?

Noneof these

All of these

Hits the glass wall of the tube

Srikes metal target

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Question 17 of 20

18. Oxidation involves:

Combustion

Loss of electrons

Gain of hydrogen

Gain in electron

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Question 18 of 20

19. Nameplates made of brass get discoloured in air because of the presence of which of the following gases in the air?

Oxygen

Hydrogen sulphide

Nitrogen

Carbon dioxide

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Question 19 of 20

20. In the periodic table, elements have been arranged?

All of these

In order of increasing volume

In order of increasing atomic number

None of these

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Question 20 of 20

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