NCERT Class 11 Chapter 14 Chemistry Environmental Chemistry MCQ

NCERT Class 11 Chapter 14 Chemistry Environmental Chemistry MCQ | Questions & Answers: Would you like to take up the NCERT Class 11 Chapter 14 Chemistry Environmental Chemistry MCQ Quiz? If yes, then here you go. Give your best for it and get to know how much knowledge you were needed to gain in the respective area of interest.

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1. Which of the following statements about photochemical smog is wrong?

A. It has high concentration of oxidizing agents

B. It has low concentration of oxidizing agents

C. It can be controlled by controlling the release of NO2, hydrocarbon, ozone, etc.

D. Plantation of some plants like pinus helps in controlling photochemical smog.

2. B.O.D is connected with

A. Organic matter

B. Microbes

C. Both

D. None

3. Green chemistry means such reasons which

A. produce colour during reactions

B. reduce the use and production of hazardous chemicals

C. are related to the depletion of ozone layer

D. study the reactions in plants

4. Which is the greatest air pollutant these days

A. Factories

B. Motor vehicles

C. Domestic appliances

D. animals

5. Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?

A. N₂O₅

B. NO₂

C. N₂O

D. NO

6. Which of the following statements is correct?

A. Ozone hole is a hole formed in stratosphere from which ozone oozes out

B. Ozone hole is a hole formed in troposphere from which ozone oozes out

C. Ozone hole is thinning of ozone layer of stratosphere at some places

D. Ozone hole means vanishing of ozone layer around the earth completely

7. Among the following, the one that is not a green house gas is:

A. sulfur dioxide

B. nitrous oxide

C. methane

D. ozone

8. The concentration of Peroxy Acetyl Nitrate (PAN) maximum in:-

A. Fog

B. Smoke

C. Smog

D. Photochemical smog

9. Which of the following statements is correct?

A. Ozone hole is a hole formed in stratosphere from which ozone oozes out.

B. Ozone hole is a hole formed in the troposphere from which ozone oozes out.

C. Ozone hole is thinning of ozone layer of stratosphere at some places

D. Ozone hole means vanishing of ozone layer around the earth completely.

10. Which of the following practices will not come under green chemistry?

A. If possible, making use of soap made of vegetable oils instead of using synthetic detergents.

B. Using H₂O₂ for bleaching purpose instead of using chlorine based bleaching agents.

C. Using bicycle for travelling small distances instead of using petrol/diesel based vehicles.

D. Using plastic cans for neatly storing substances.

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11. Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because _______.

A. the reaction is endothermic and requires very high temperature.

B. the reaction can be initiated only in presence of a catalyst.

C. oxides of nitrogen are unstable.

D. N₂ and O₂ are unreactive.

12. The living organisms on or around the earth constitute

A. Biome

B. Biosphere

C. Community

D. Biocoenosis

13. Which country has the greatest contribution for the hole formation in ozone layer?

A. Russia

B. Japan

C. USA

D. Germany

14. The population of India is 15% of the world but its annual energy consumption is only

A. 0.2%

B. 0%

C. 10%

D. 25%

15. The major source of BOD in the river Ganga is

A. Leaf litter

B. Fishes

C. Human waste

D. Aquatic plants

16. Which will not cause any atmospheric pollution

A. Hydrogen

B. Sulphur dioxide

C. Carbon dioxide

D. Carbon monoxide

17. Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form dioxides of nitrogen because ______.

A. the reaction is endothermic and requires very high temperature

B. the reaction can be initiated only in presence of a catalyst

C. oxides of nitrogen are unstable

D. N₂ and O₂ are unreactive

18. The substance having the largest concentration in acid rain?

A. H₂CO₃

B. HNO₃

C. HCL

D. H₂SO₄

19. Photochemical smog occurs in warm, dry and sunny climate. One of the following is not amongst the components of photochemical smog, identify it.

A. NO₂

B. O₃

C. SO₂

D. Unsaturated hydrocarbon

20. Pollution can be controlled by

A. Sewage treatment

B. Checking atomic blasts

C. Manufacturing electrically operated vehicles

D. All the above

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21. What is the intensity of sound in normal conversation

A. 10 -20 decibal

B. 30 - 60 decibal

C. 70 - 90 decibal

D. 120 - 150 decibal

22. Which of the following statements about photochemical smog is wrong?

A. It has high concentration of oxidising agents.

B. It has low concentration of oxidising agent.

C. It can be controlled by controlling the release of NO2 , hydrocarbons,ozone etc.

D. Plantation of some plants like pinus helps in controlling photochemical smog.

23. Which of the following statements is correct?

A. Ozone hole is a hole formed in stratosphere from which ozone oozes out.

B. Ozone hole is a hole formed in the troposphere from which ozone oozes out.

C. Ozone hole is thinning of ozone layer of stratosphere at some places

D. Ozone hole means vanishing of ozone layer around the earth completely.

24. Which of the following statement is NOT true about acid rain ?

A. It is due to reaction of SO₂, NO₂ and CO₂ with rain water

B. Causes no damage to monuments like Taj Mahal.

C. It is harmful to plants.

D. Its pH is less than 5.6

25. The type of pollution caused by spraying of DDT

A. Air and soil

B. Air and water

C. Air

D. Air, water and soil