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Page 1 P- 1 MCQ (Single Correct Answer) Q.1. The possibility of photochemical smog formation will be minimum at: A. Water vapour B. Ozone C. I2 D. Molecular hydrogen Choose the most appropriate answer from the options given JEE Main 2023 (Online) 15th April Morning Shift Q.2. Which of the following are the Green house gases? below: Page 2 P- 1 MCQ (Single Correct Answer) Q.1. The possibility of photochemical smog formation will be minimum at: A. Water vapour B. Ozone C. I2 D. Molecular hydrogen Choose the most appropriate answer from the options given JEE Main 2023 (Online) 15th April Morning Shift Q.2. Which of the following are the Green house gases? below: Q.3. The radical which mainly causes ozone depletion in the presence of UV radiations is : JEE Main 2023 (Online) 13th April Morning Shift Q. 4. Match List I with List II LIST I LIST II A. Nitrogen oxides in air I. Eutrophication B. Methane in air II. pH of rain water becomes 5.6 C. Carbon dioxide III. Global warming D. Phosphate fertilisers in water IV. Acid rain Choose the correct answer from the options given below: JEE Main 2023 (Online) 13th April Evening Shift Page 3 P- 1 MCQ (Single Correct Answer) Q.1. The possibility of photochemical smog formation will be minimum at: A. Water vapour B. Ozone C. I2 D. Molecular hydrogen Choose the most appropriate answer from the options given JEE Main 2023 (Online) 15th April Morning Shift Q.2. Which of the following are the Green house gases? below: Q.3. The radical which mainly causes ozone depletion in the presence of UV radiations is : JEE Main 2023 (Online) 13th April Morning Shift Q. 4. Match List I with List II LIST I LIST II A. Nitrogen oxides in air I. Eutrophication B. Methane in air II. pH of rain water becomes 5.6 C. Carbon dioxide III. Global warming D. Phosphate fertilisers in water IV. Acid rain Choose the correct answer from the options given below: JEE Main 2023 (Online) 13th April Evening Shift JEE Main 2023 (Online) 12th April Morning Shift Q.5. Which of the following compounds is an example of Freon? JEE Main 2023 (Online) 11th April Evening Shift Q.6. Given below are two statements: Page 4 P- 1 MCQ (Single Correct Answer) Q.1. The possibility of photochemical smog formation will be minimum at: A. Water vapour B. Ozone C. I2 D. Molecular hydrogen Choose the most appropriate answer from the options given JEE Main 2023 (Online) 15th April Morning Shift Q.2. Which of the following are the Green house gases? below: Q.3. The radical which mainly causes ozone depletion in the presence of UV radiations is : JEE Main 2023 (Online) 13th April Morning Shift Q. 4. Match List I with List II LIST I LIST II A. Nitrogen oxides in air I. Eutrophication B. Methane in air II. pH of rain water becomes 5.6 C. Carbon dioxide III. Global warming D. Phosphate fertilisers in water IV. Acid rain Choose the correct answer from the options given below: JEE Main 2023 (Online) 13th April Evening Shift JEE Main 2023 (Online) 12th April Morning Shift Q.5. Which of the following compounds is an example of Freon? JEE Main 2023 (Online) 11th April Evening Shift Q.6. Given below are two statements: Statement I : If BOD is 4 ppm and dissolved oxygen is 8 ppm, then it is a good quality water. Statement II : If the concentration of zinc and nitrate salts are 5 ppm each, then it can be a good quality water. In the light of the above statements, choose the most appropriate answer from the options given below: JEE Main 2023 (Online) 11th April Morning Shift Q.7. Number of water molecules in washing soda and soda ash respectively are: Page 5 P- 1 MCQ (Single Correct Answer) Q.1. The possibility of photochemical smog formation will be minimum at: A. Water vapour B. Ozone C. I2 D. Molecular hydrogen Choose the most appropriate answer from the options given JEE Main 2023 (Online) 15th April Morning Shift Q.2. Which of the following are the Green house gases? below: Q.3. The radical which mainly causes ozone depletion in the presence of UV radiations is : JEE Main 2023 (Online) 13th April Morning Shift Q. 4. Match List I with List II LIST I LIST II A. Nitrogen oxides in air I. Eutrophication B. Methane in air II. pH of rain water becomes 5.6 C. Carbon dioxide III. Global warming D. Phosphate fertilisers in water IV. Acid rain Choose the correct answer from the options given below: JEE Main 2023 (Online) 13th April Evening Shift JEE Main 2023 (Online) 12th April Morning Shift Q.5. Which of the following compounds is an example of Freon? JEE Main 2023 (Online) 11th April Evening Shift Q.6. Given below are two statements: Statement I : If BOD is 4 ppm and dissolved oxygen is 8 ppm, then it is a good quality water. Statement II : If the concentration of zinc and nitrate salts are 5 ppm each, then it can be a good quality water. In the light of the above statements, choose the most appropriate answer from the options given below: JEE Main 2023 (Online) 11th April Morning Shift Q.7. Number of water molecules in washing soda and soda ash respectively are: JEE Main 2023 (Online) 10th April Evening Shift Q.8. The delicate balance of CO2 and O2 is NOT disturbed by JEE Main 2023 (Online) 10th April Evening Shift Q.9. Match List I with List II List I Industry List II Waste Generated (A) Steel plants (I) Gypsum (B) Thermal power plants (II) Fly ash (C) Fertilizer industries (III) Slag (D) Paper mills (IV) Bio-degradable wastes Choose the correct answer from the options given below:Read More
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FAQs on Environmental Chemistry: JEE Mains Previous Year Questions (2021-2024) - Chemistry for JEE Main & Advanced
| 1. What is environmental chemistry? |  |
Ans. Environmental chemistry is the branch of science that deals with the study of chemical processes occurring in the environment, including air, water, and soil. It focuses on understanding the impact of human activities on the environment and developing solutions to prevent or minimize pollution.
| 2. How does environmental chemistry help in addressing environmental issues? | |
Ans. Environmental chemistry helps in identifying pollutants, understanding their behavior in the environment, and developing strategies to mitigate their harmful effects. It provides insights into the sources, transport, transformation, and fate of pollutants, leading to the development of sustainable environmental management practices.
| 3. What are the major sources of environmental pollution studied in environmental chemistry? | |
Ans. Environmental chemistry studies pollution sources such as industrial emissions, vehicle exhaust, agricultural runoff, and improper waste disposal. These sources release pollutants like greenhouse gases, heavy metals, pesticides, and plastic waste, leading to air, water, and soil contamination.
| 4. How does environmental chemistry contribute to the study of climate change? | |
Ans. Environmental chemistry plays a crucial role in understanding the impact of greenhouse gases on the Earth's climate. By studying the composition of the atmosphere and the interactions between different chemical compounds, environmental chemists can assess the role of human activities in global warming and climate change.
| 5. What are some key areas of research in environmental chemistry? | |
Ans. Key areas of research in environmental chemistry include studying the effects of pollutants on human health, developing sustainable technologies for pollution control, assessing the ecological impacts of contaminants, and investigating the chemistry of natural processes that influence environmental quality.
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