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Chemistry 10th Class English Medium Unit 14 Online Test MCQs With Answers

Question # 1

Which gas is also known as life gas for plants.

Choose an answer

CO₂

O₂

NO₂

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Question # 2

How many percentage of sunlight is absorbed by atmosphere gases.

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12%

18%

24%

30%

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Question # 3

Which gas acts as a glass wall of a green house?

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Oxygen

Carbon dioxides

sulphur dioxide

Hydrogen

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Question # 4

99% of atmosphere consists of .

Choose an answer

N₂and H₂

N₂and O₂

N₂and CO₂

O₂and CO₂

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Question # 5

Ozone is an allotropic form of

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Carbon

Oxygen

Sulphur

Phosphorous

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Question # 6

The range of temperature in burning solid waste burning in incinerators is.

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650 ^oC - 1000 ^oC

650^oC - 11000^oC

1000^oC - 2000^oC

650^oC - 1000^oC

5000^oC - 1000^oC

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Question # 7

About 99% atmosphere's lies within:

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30 kilometre

35 kilometre

15kilometre

11 kilometre

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Question # 8

Atmosphere is divided into;

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3 regions

4 regions

5 regions

6 regions

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Question # 9

The percentage by volume of nitrogen in dry gas is.

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78.09%

20.94%

0.93%

0.03%

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Question # 10

The waste products driven out because of the combustion of fossil fuels.

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Primary pollutant

Secondary pollutant

Tertiary pollutant.

None of them

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Question # 11

What gas is the major constituent of troposphere?

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Nitrogen

Oxygen

Hydrogen

Both a and b

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Question # 12

How many atmospheric temperature increase every year due to accumulation of CO₂ in air.

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0.03 ^oC

0.05 ^oC

1^oC

2^oC

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Question # 13

The layer above troposphere extend upto 50 kilometers called.

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Mesosphere

Hydrosphere

Stratosphere

Thermosphere

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