9th Class Chemistry Chapter 10 English Medium Online MCQ Test With Answer

Practice 9th Class Chemistry Chapter 10 “Environmental Chemistry” online with this MCQ test. This chapter focuses on the impact of chemicals on the environment, including pollution, green chemistry, and sustainable practices. Students will learn about air, water, and soil pollution, their causes, effects, and preventive measures. By attempting these multiple-choice questions, learners can strengthen their understanding of environmental issues, chemical reactions affecting nature, and ways to reduce pollution. Each question comes with a correct answer to help students assess their knowledge and improve weak areas. Online practice enhances learning and ensures better preparation for exams.

MCQ's Test For Chapter 10 "Environmental Chemistry"

Try The MCQ's Test For Chapter 10 "Environmental Chemistry"

  • Total Questions12

  • Time Allowed15

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Environmental Chemistry

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Question # 1

Concentration of which gas in the atmosphere is decreased by photosynthesis in plants.

Question # 2

Which is not an air pollutant

Question # 3

How many trees are cut down to make toliet paper every day.

Question # 4

People of which age groups are most affected by the air pollution .

Question # 5

Which one of the following is not a green house effect?

Question # 6

Why is smog not felt in summer?

Question # 7

Carbon monoxide is harmful to us because.

Question # 8

Indicate the source of sulphur which is responsible for the presennce of oxides of sulphur in the atomospher.

Question # 9

The pH of normal rain water is.

Question # 10

Which substance remains unafaffected in the catalytic conerer fixed int he exhaust of the atutomobiles.

Question # 11

% age of oxygen gas by volume in dry air is

Question # 12

The pereceangage of SO2 released by the combustion of coal and petroleum products is.

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9th Class (English Medium) Chemistry (New Book) Chapter 10 Important MCQ's

Sr.# Question Answer
1 The Earth's atmosphere is getting hotter beacuse of.
A. Increasig concentration of CO
B. Increasig concentration of CO2
C. Increasig concentration of O3
D. Increasig concentration of SO2
2 Whcih factor deermines the severity of a pollutant.
A. Persistence
B. Concentration
C. Chemical nature
D. All of the above
3 Global warming is because of
A. Emission of ultraviolet radiations from the Earth's surface
B. Absorption of infrared radiations emitted by Earth's surface
C. Absorption of infrared radiations coming from the sun
D. Absorption of ultraviolet erdiations coming from the sun
4 The pereceangage of SO2 released by the combustion of coal and petroleum products is.
A. 40%
B. 80%
C. 60%
D. 70%
5 A pollutant is a waste material that pollutes.
A. Water
B. Soil
C. Air
D. All of these
6 How many tree are there in the world.
A. 3.21 trillion
B. 3.21 million
C. 3.04 trillion
D. 3.04 million
7 Carbon monoxide is harmful to us because.
A. It paralyses the lungs
B. It reduces oxygen carrying ability of haemoglobin
C. It damages lungs tissues
D. It makes the blood coagulate
8 The pH of normal rain water is.
A. 4 - 6
B. 6 - 7
C. 5 - 6
D. 7- 8
9 Which catalyst is used in the catalytic converter fixed in teh exhaust systems of automobiles.
A. Ni
B. Pt,Pd and Rh
C. Cu
D. CaO
10 People of which age groups are most affected by the air pollution .
A. Children
B. Young Adults
C. Cancer patient
D. Both children and aged people

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