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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"
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Total Questions12
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Time Allowed15
Environmental Chemistry
00:00
Question # 1
Higher concentration of CO causes
Question # 2
Why is smog not felt in summer?
Question # 3
People of which age groups are most affected by the air pollution .
Question # 4
Normally rain water is weakly acidic becasue of.
Question # 5
Concentration of which gas in the atmosphere is decreased by photosynthesis in plants.
Question # 6
Buildings are being damaged by acid rain because it attcks.
Question # 7
How many percentage of all available water use by humans.
Question # 8
Whcih gas is emitted due to volcanic eruption.
Question # 9
Increased concentration of CO2 in air results.
Question # 10
Whcih factor deermines the severity of a pollutant.
Question # 11
Which gas is atmosphere acts as a glass wall of a green house.
Question # 12
A group of gases hat maintains temperature of atmosphere is
Top Scorers Of Chapter 10 "Environmental Chemistry" MCQ`s Test
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B BNVB 25 - Oct - 2025 00 Min 01 Sec 12/12 -
C CH HADI 25 - Oct - 2025 01 Min 31 Sec 12/12 -
M M. Abdullah 24 - Dec - 2025 04 Min 29 Sec 12/12 -
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9th Class (English Medium) Chemistry (New Book) Chapter 10 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | How many tons of ice melts every year? |
A. 0.2 trillion
B. 3.2 trillion
C. 1.2 trillion
D. 2.2 trillion
|
| 3 | Which of the following is a poisonous gas. |
A. Ozone
B. Oxygen
C. Nitrogen
D. Carbon di oxide
|
| 4 | Higher concentration of CO causes |
A. Fatigue
B. Headache
C. Breathign difficulties
D. All of these
|
| 5 | Global warming causes rising of the sea level. The cause of global warming is. |
A. SO2 gas
B. O3 gas
C. NO3 gas
D. CO2 gas
|
| 6 | How many % of marine mammals are at the risk of chokig on plastic. |
A. 78%
B. 21%
C. 0.03%
D. 99%
|
| 7 | 99% of atmosphere consists of |
A. O2 and CO2
B. N2 and H2
C. N2 and O2
D. N2 and CO2
|
| 8 | Which gas is produced by the elecrical lightning in air. |
A. NO
B. SO2
C. SO3
D. CO2
|
| 9 | % age of oxygen gas by volume in dry air is |
A. 21%
B. 90%
C. 40%
D. 30%
|
| 10 | Which one of the following is not a green house effect? |
A. Increasing atmospheric temperature
B. Increasing sea level
C. Increasing flood risks
D. Increasing flood chains
|
Test Questions
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