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

Supplies electrons

Withdraw electrons

Undergoes oxidation

None of these

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Question 1 of 20

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

Left hand top corner

Left hand bottom corner

All of these

None of these

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Question 2 of 20

3. Oxidation involves:

Gain in electron

Combustion

Gain of hydrogen

Loss of electrons

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Question 3 of 20

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

Nitrogen

Carbon dioxide

Oxygen

Hydrogen sulphide

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Question 4 of 20

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

Freeze

Evaporate

Ionize

Boil

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Question 5 of 20

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

None of these

Increases

All of these

Increases with constant state

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Question 6 of 20

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

Oxygen and Nitrogen

Oxygen and Methane

Methane and Carbon dioxide

Bautane and Propane

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Question 7 of 20

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

Troposphere and Thermosphere

Troposphere and Stratosphere

Mesosphere

Thermosphere

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Question 8 of 20

9. What is the chemical name of Baking Soda?

Potassium

Sodium Nitrate

Sodium Carbonate

Sodium bicarbonate

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Question 9 of 20

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

Increases

Decreases then Increases

Decreases

Neither increases nor decreases

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Question 10 of 20

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

Fission reaction

All of these

None of these

Fusion reaction

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Question 11 of 20

12. Atom bomb is based on the principal of?

All of these

Nuclear fission

None of these

Nuclear fusion

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Question 12 of 20

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

None of these

Hydrogen peroxide

Alcohol

Oxalic acid

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Question 13 of 20

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

Mercury

Sodium

Potassium

Barrium

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Question 14 of 20

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

None of these

In order of increasing atomic number

All of these

In order of increasing volume

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Question 15 of 20

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

Oxidation, reduction

Reduction, Oxidation

None of these

Reduction, hydrolysis

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Question 16 of 20

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

Hits the glass wall of the tube

Srikes metal target

All of these

Noneof these

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Question 17 of 20

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

Remains unchanged

Decreases

None of these

Increases

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Question 18 of 20

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

Carbon dioxide

Hydrogen

Oxygen

Water vapour

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Question 19 of 20

20. The reason for chlorination of water is:

To kill germs

To propagate germs

To add minerals

To add taste

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Question 20 of 20

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