Punjab 12th Class Chemistry Chapter 16 Environmental Chemistry Mcqs Test Online
Questions 20
Total Marks 40
Time 20 Mins
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Punjab 12th Class Chemistry Chapter 16 Environmental Chemistry Mcqs Test Online

Start your preparation for Punjab 12th Class Chemistry Chapter 16 Environmental Chemistry Mcqs Test Online. This online test contains 20 MCQs and you have 20 Minutes to complete it. The total marks for this test are 40. This test is valid for students of All Punjab Boards (Lahore, Gujranwala, Multan, etc.) following the PCTB Syllabus. Read the questions carefully and select the correct option below to see your result.

Punjab 12th Class Chemistry Chapter 16 Environmental Chemistry Mcqs Test Online

 

Question 1 of 20

Chemistry

1. Oxidizing smog consists of high concentration of:
1.
2.
3.
4.

Question 1 of 20

Question 2 of 20

2. An example of BOC is:
1.
2.
3.
4.

Question 2 of 20

Question 3 of 20

3. Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:
1.
2.
3.
4.

Question 3 of 20

Question 4 of 20

4. The Ecosystem is the smaller unit of:
1.
2.
3.
4.

Question 4 of 20

Question 5 of 20

5. Thickness of ozone is:
1.
2.
3.
4.

Question 5 of 20

Question 6 of 20

6. In leather industry:
1.
2.
3.
4.

Question 6 of 20

Question 7 of 20

7. The branch of chemistry which deals with the transformation of natural raw materials is called:
1.
2.
3.
4.

Question 7 of 20

Question 8 of 20

8. What do you mean by BOC.

1.
2.
3.
4.

Question 8 of 20

Question 9 of 20

9. When chlorine is passed through water then the disinfection is done due to the production?
1.
2.
3.
4.

Question 9 of 20

Question 10 of 20

10. Air is polluted by:

1.
2.
3.
4.

Question 10 of 20

Question 11 of 20

11. Oxides of sulfur and nitrogen react with oxygen to form:

1.
2.
3.
4.

Question 11 of 20

Question 12 of 20

12. An example of BIC:
1.
2.
3.
4.

Question 12 of 20

Question 13 of 20

13. Which of following gas is not pollutant?
1.
2.
3.
4.

Question 13 of 20

Question 14 of 20

14. Ozone is destroyed by:
1.
2.
3.
4.

Question 14 of 20

Question 15 of 20

15. High valued products produced in low volumes are called:
1.
2.
3.
4.

Question 15 of 20

Question 16 of 20

16. What does BIC stands for:
1.
2.
3.
4.

Question 16 of 20

Question 17 of 20

17. Water is purified:
1.
2.
3.
4.

Question 17 of 20

Question 18 of 20

18. Low valued products produced in large quantities are called:
1.
2.
3.
4.

Question 18 of 20

Question 19 of 20

19. High valued pure chemicals are known as:

1.
2.
3.
4.

Question 19 of 20

Question 20 of 20

20. Fungicides are the pesticides which
1.
2.
3.
4.

Question 20 of 20


 

Guide for Punjab Board Students

Students of BISE Lahore, Gujranwala, Multan, and other Punjab boards must follow the SLO based pattern.

Top Scoring Tips for Punjab:

  • Textbook Reading: The paper is 100% derived from PCTB books. Do not rely only on keybooks.
  • Objective Paper (20%): Practice these online MCQs repeatedly as they are taken from 5-Year Past Papers.
  • Bubble Sheet: Ensure you know how to fill the OMR sheet correctly.

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