Class 11 Environmental Chemistry MCQs with answers

Class 11 Chemistry Environmental Chemistry MCQs with answers

Class 11 Chemistry Environmental Chemistry MCQs with answers provide a comprehensive review for students preparing for their Sainik School exams. These multiple-choice questions cover key concepts in environmental chemistry, offering a targeted approach to test preparation. The questions are designed to assess a student’s understanding of topics such as air and water pollution, environmental issues, and sustainable development. With clear and concise answers, this resource aids in strengthening the foundation of class 11 chemistry knowledge.

Sainik School aspirants can benefit greatly from practicing these MCQs as they align with the curriculum, helping students identify areas of strength and weakness. The emphasis on environmental chemistry underscores the importance of ecological awareness in today’s world. As students prepare for their Sainik School entrance, these MCQs serve as a valuable tool for reinforcing class 12 chemistry concepts and enhancing overall exam readiness.

Q1. Which of the following constitutes organic wastes?

  1. Drainage from mineral fields.
  2. Sewage.
  3. Industrial organic chemical.
  4. Fertilisers.
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Ans: 2. Sewage

Q2. Which of the following is/ are the primary precursor(s) of the photochemical smog?

  1. Hydrocarbon.
  2. PAN
  3. NO2
  4. Both (b) and (c).
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Ans: 4. Both (b) and (c).

Q3. Which of the following greenhouse gas is released in paddy field?

  1. CFCs
  2. CH4
  3. SO2
  4. All of these
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Ans: 4. All of these

Q4. The depletion of ozone leads to the formation of:

  1. Ozone hole.
  2. Ozone centre.
  3. Ozone point.
  4. All of these.
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Ans: 1. Ozone hole.

Q5. Which one of the following statements is not true?

  1. Oxides of sulphur, nitrogen and carbon are the most wide spread air pollutant.
  2. pH of drinking water should be between 5.5-9.5.
  3. Concentration of DO below 5ppm is good for the growth of fish.
  4. Clean water would have a BOD value less than 5ppm.
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Ans: 3. Concentration of DO below 5ppm is good for the growth of fish.

Q6. Which of the following is/ are most serious disease causing agent found in polluted water?

  1. Chemical pollutants.
  2. Organic wastes.
  3. Pathogens.
  4. Both (a) and (b).
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Ans: 3. Pathogens.

Q7. Which of the following is not a green house gas:

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Ans: 4. N2

Q8. Classical smog is a mixture of:

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Ans: 4. Smoke + fog + SO2

Q9. Oxidising smog includes:

  1. Normal smog.
  2. Photochemical smog.
  3. Classical smog.
  4. Both (a) and (b).
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Ans: 2. Photochemical smog.

Q10. Which of the following is now used for bleaching of paper, in place of chlorine?

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Q11. Which of the following is not a viable particulate?

  1. Bacteria.
  2. Fungi.
  3. Moulds.
  4. Mist.
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Ans: 4. Mist.

Explanation:
The viable particulates are minute living organisms like bacteria, fungi and moulds.

Q12. Which of the following is sink for CO?

  1. Microorganisms present in soil.
  2. Oceans.
  3. Plants.
  4. Haemoglobin.
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Ans: 1. Microorganisms present in soil.

Q13. Which of the following process is/ are used to check the amount of oxygen required by bacteria to breakdown the
organic matter present in a certain volume of water?

  1. BOD.
  2. DO.
  3. COD.
  4. Both (a) and (b).
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Ans: 1. BOD.

Q14. Which of the following reaction(s) is/ are carried out during the formation of O layer in stratosphere?

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Ans: 4. All of these

Q15. Which of the following atmospheric layer contains clouds, water vapour and air?

  1. Stratosphere.
  2. Troposphere.
  3. Mesosphere.
  4. All of these.
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Ans: 2. Troposphere.

FAQs

Q: How can practicing Class 11 Chemistry Environmental Chemistry MCQs with answers benefit students preparing for Sainik School exams?

A: Practicing these MCQs provides a focused and efficient way for Sainik School aspirants to reinforce their understanding of environmental chemistry concepts. The questions cover key topics, helping students identify areas of improvement and solidify their knowledge base. Additionally, the clear and concise answers enable quick self-assessment, aiding in targeted exam preparation. This resource is tailored to the class 11 chemistry curriculum, making it an invaluable tool for those aiming to excel in the Sainik School entrance exams.

Q: How does the inclusion of environmental chemistry MCQs align with the broader goals of Sainik School education?

A: Sainik Schools aim to foster well-rounded individuals with a strong academic foundation and a sense of social responsibility. Environmental chemistry is crucial in understanding and addressing contemporary global challenges. Including MCQs on this topic aligns with the school’s commitment to holistic education by promoting ecological awareness and a deeper understanding of environmental issues. This not only prepares students for their class 11 chemistry exams but also instills a sense of environmental stewardship, aligning with the ethos of Sainik School education.

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