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?

Oxidation, reduction

Reduction, hydrolysis

None of these

Reduction, Oxidation

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Question 1 of 20

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

None of these

Decreases

Increases

Remains unchanged

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Question 2 of 20

3. The reason for chlorination of water is:

To propagate germs

To add minerals

To kill germs

To add taste

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Question 3 of 20

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

Oxygen and Nitrogen

Methane and Carbon dioxide

Bautane and Propane

Oxygen and Methane

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Question 4 of 20

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

In order of increasing volume

All of these

None of these

In order of increasing atomic number

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Question 5 of 20

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

Mercury

Potassium

Sodium

Barrium

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Question 6 of 20

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

Srikes metal target

Noneof these

Hits the glass wall of the tube

All of these

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Question 7 of 20

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

Hydrogen

Carbon dioxide

Water vapour

Oxygen

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Question 8 of 20

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

All of these

Fusion reaction

None of these

Fission reaction

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Question 9 of 20

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

Increases with constant state

All of these

None of these

Increases

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Question 10 of 20

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

Carbon dioxide

Hydrogen sulphide

Oxygen

Nitrogen

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Question 11 of 20

12. 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

Increases

Decreases then Increases

Decreases

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Question 12 of 20

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

None of these

Left hand top corner

All of these

Left hand bottom corner

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Question 13 of 20

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

Thermosphere

Troposphere and Stratosphere

Mesosphere

Troposphere and Thermosphere

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Question 14 of 20

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

Boil

Ionize

Freeze

Evaporate

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Question 15 of 20

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

Hydrogen peroxide

None of these

Oxalic acid

Alcohol

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Question 16 of 20

17. What is the chemical name of Baking Soda?

Sodium Nitrate

Potassium

Sodium Carbonate

Sodium bicarbonate

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Question 17 of 20

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

None of these

Supplies electrons

Undergoes oxidation

Withdraw electrons

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Question 18 of 20

19. Atom bomb is based on the principal of?

All of these

Nuclear fission

None of these

Nuclear fusion

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Question 19 of 20

20. Oxidation involves:

Combustion

Gain of hydrogen

Gain in electron

Loss of electrons

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Question 20 of 20

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