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

None of these

Reduction, hydrolysis

Oxidation, reduction

Reduction, Oxidation

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Question 1 of 20

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

Hydrogen peroxide

None of these

Oxalic acid

Alcohol

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Question 2 of 20

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

Oxygen and Nitrogen

Bautane and Propane

Methane and Carbon dioxide

Oxygen and Methane

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Question 3 of 20

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

Neither increases nor decreases

Decreases then Increases

Increases

Decreases

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Question 4 of 20

5. Oxidation involves:

Gain in electron

Loss of electrons

Gain of hydrogen

Combustion

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Question 5 of 20

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

Supplies electrons

Withdraw electrons

None of these

Undergoes oxidation

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Question 6 of 20

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

Oxygen

Carbon dioxide

Nitrogen

Hydrogen sulphide

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Question 7 of 20

8. Atom bomb is based on the principal of?

Nuclear fission

All of these

None of these

Nuclear fusion

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Question 8 of 20

9. What is the chemical name of Baking Soda?

Sodium bicarbonate

Potassium

Sodium Nitrate

Sodium Carbonate

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Question 9 of 20

10. The reason for chlorination of water is:

To propagate germs

To add minerals

To add taste

To kill germs

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Question 10 of 20

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

All of these

Fusion reaction

None of these

Fission reaction

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Question 11 of 20

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

Increases

All of these

Increases with constant state

None of these

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Question 12 of 20

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

Evaporate

Ionize

Freeze

Boil

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Question 13 of 20

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

All of these

Hits the glass wall of the tube

Noneof these

Srikes metal target

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Question 14 of 20

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

Hydrogen

Oxygen

Water vapour

Carbon dioxide

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Question 15 of 20

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

Troposphere and Stratosphere

Thermosphere

Troposphere and Thermosphere

Mesosphere

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Question 16 of 20

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

Left hand bottom corner

None of these

Left hand top corner

All of these

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Question 17 of 20

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

Decreases

None of these

Remains unchanged

Increases

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Question 18 of 20

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

In order of increasing atomic number

All of these

None of these

In order of increasing volume

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Question 19 of 20

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

Barrium

Potassium

Sodium

Mercury

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Question 20 of 20

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