Environmental class 12 MCQ Question and Answer

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Environmental class 12 chapter 16 MCQ Question and Answer

Environmental class 12 MCQ taken from NCERT Book these are very Important MCQ 30 Read and give answer at yourself first then you can check my answer.

Question:1 Which gas is primarily responsible for the greenhouse effect?

  1. A) Oxygen
  2. B) Carbon Dioxide
  3. C) Nitrogen
  4. D) Methane

Question:2 What is the main source of sulfur dioxide in the atmosphere?

  1. A) Volcanic eruptions
  2. B) Burning of fossil fuels
  3. C) Deforestation
  4. D) Industrial processes

Question:3 Ozone layer is found in which layer of the atmosphere?

  1. A) Troposphere
  2. B) Stratosphere
  3. C) Mesosphere
  4. D) Thermosphere

Question:4 What is the major cause of soil erosion?

  1. A) Deforestation
  2. B) Urbanization
  3. C) Agriculture practices
  4. D) Industrialization

Question:5 Which of the following is a non-renewable resource?

  1. A) Solar energy
  2. B) Wind energy
  3. C) Coal
  4. D) Biomass

Question:6 The process of converting waste materials into reusable material is known as

  1. A) Recycling
  2. B) Composting
  3. C) Incineration
  4. D) Landfill

Question:7 The term “Biodiversity” refers to

  1. A) Variation in weather patterns
  2. B) Variety of life on Earth
  3. C) Different soil types
  4. D) Changes in atmospheric pressure

Question:8 What is the primary cause of acid rain?

  1. A) Carbon monoxide emissions
  2. B) Nitrogen oxide emissions
  3. C) Sulfur dioxide emissions
  4. D) Methane emissions

Question:9 Which gas is responsible for the depletion of the ozone layer?

  1. A) Carbon dioxide
  2. B) Chlorofluorocarbons (CFCs)
  3. C) Nitrous oxide
  4. D) Methane

Question:10 What is the primary function of wetlands in the environment?

  1. A) Carbon sequestration
  2. B) Water purification
  3. C) Habitat for biodiversity
  4. D) All of the above

Question:11 The term “Eutrophication” is associated with

  1. A) Soil erosion
  2. B) Deforestation
  3. C) Water pollution
  4. D) Air pollution

Question:12 Which of the following is a renewable source of energy?

  1. A) Natural Gas
  2. B) Nuclear Energy
  3. C) Hydropower
  4. D) Coal

Question:13 The Kyoto Protocol is associated with the reduction of

  1. A) Greenhouse gas emissions
  2. B) Deforestation
  3. C) Ozone depletion
  4. D) Acid rain

Question:14 Which type of pollution is caused by fine particles suspended in the air?

  1. A) Noise pollution
  2. B) Water pollution
  3. C) Air pollution
  4. D) Soil pollution

Question:15 The term “Carbon footprint” is related to

  1. A) Water conservation
  2. B) Energy efficiency
  3. C) Greenhouse gas emissions
  4. D) Soil erosion

Question:16 Which of the following is a method of water conservation?

  1. A) Drip irrigation
  2. B) Deforestation
  3. C) Overgrazing
  4. D) Urbanization

Question:17 The process of converting organic waste into nutrient-rich soil is known as

  1. A) Incineration
  2. B) Recycling
  3. C) Composting
  4. D) Landfill

Question:18 What is the primary cause of the “hole” in the ozone layer?

  1. A) Deforestation
  2. B) Industrial pollution
  3. C) Chlorofluorocarbons (CFCs)
  4. D) Acid rain

Question:19 The three R’s in environmental conservation stand for

  1. A) Read, Write, Recycle
  2. B) Reduce, Reuse, Recycle
  3. C) Run, Race, Recover
  4. D) Reflect, Respond, Recycle

Question:20 Which of the following is a greenhouse gas?

  1. A) Oxygen
  2. B) Nitrogen
  3. C) Methane
  4. D) Ozone

Question:21 What is the primary component of photochemical smog?

  1. A) Carbon dioxide
  2. B) Sulfur dioxide
  3. C) Nitrogen oxides
  4. D) Ozone

Question:22 The term “Deforestation” refers to

  1. A) Planting more trees
  2. B) Cutting down trees
  3. C) Forest conservation
  4. D) Recycling paper

Question:23 Which of the following is a renewable source of energy?

  1. A) Natural Gas
  2. B) Nuclear Energy
  3. C) Solar Power
  4. D) Coal

Question:24 The process of converting waste into energy in the absence of oxygen is called

  1. A) Incineration
  2. B) Recycling
  3. C) Composting
  4. D) Anaerobic digestion

Question:25 What is the primary cause of the “Greenhouse Effect”?

  1. A) Deforestation
  2. B) Release of greenhouse gases
  3. C) Ozone depletion
  4. D) Acid rain

Question:26 Which of the following is a consequence of soil pollution?

  1. A) Water scarcity
  2. B) Air pollution
  3. C) Loss of biodiversity
  4. D) Noise pollution

Question:27 The process by which water on the Earth’s surface enters the soil is known as:

  1. A) Infiltration
  2. B) Evaporation
  3. C) Transpiration
  4. D) Condensation

Question:28 Which of the following is an example of a point source of pollution?

  1. A) Agricultural runoff
  2. B) Air pollution from cars
  3. C) Oil spills
  4. D) Deforestation

Question:29 Environment (protection) act came into force in ?

  1. 1986
  2. 1989
  3. 1992
  4. 1993

Question:30 Increased skin cancer and high mutation rate are due to

  1. Acid Rain
  2. Ozone Depletion
  3. CO2 pollution
  4. CO pollution

MCQ Answers

Question NoAnswer Question NoAnswer
1B16A
2B17C
3B18C
4C19B
5C20C
6A21C
7B22B
8C23C
9B24D
10D25B
11C26C
12C27A
13A28C
14C29C
15C30B

Environmental class 12 MCQ

Important Question and Answer

Question:1What is the Environment?

Answer :An Environment is everything that is around us, which includes both living and nonliving things such as soil, water, animals and plants, which adapt themselves to their surroundings. It is nature’s gift that helps in nourishing life on the earth.

Question:2 .What is Biodiversity Conservation

Asnwwer:

Biodiversity conservation means protection, conservation and management of biodiversity in order to obtain sustainable benefits for future generations.

Question:3 .What is Deforestation?

Answer:

Deforestation can be defined as the large-scale removal of trees from forests (or other lands) for the facilitation of human activities. It is a serious environmental concern since it can result in the loss of biodiversity, damage to natural habitats, disturbances in the water cycle, and soil erosion. Deforestation is also a contributor to climate change and global warming.

Read also

  1. Chapter 1: Reproduction in Organisms class 12 MCQ
  2. Chapter 2: Sexual Reproduction Flowering plants class 12 MCQ
  3. Chapter 3: Human Reproduction class 12 MCQ
  4. Chapter 4: Reproductive Health class 12 MCQ
  5. Chapter 5: Principles of Inheritance and Variation class 12 MCQ
  6. Chapter 6: Class 12 biology molecular basis of inheritance MCQ

Conclusion

Microorganisms play a vital role in wastewater treatment, contributing to biological degradation and the removal of pollutants.

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