MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Why is CNG (Compressed Natural Gas) preferred over petrol? |
| A. | Burns most efficiently |
| B. | It is expensive |
| C. | Burns less efficiently |
| D. | Can be adulterated |
| Answer» B. It is expensive | |
| 2. |
What was the position of Delhi among the 41 most polluted cities of the world in the 1990s? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 3. |
What amount of noise may damage eardrums thus permanently impairing hearing ability? |
| A. | 10 dB |
| B. | 150 dB |
| C. | 15 dB |
| D. | 50 dB |
| Answer» C. 15 dB | |
| 4. |
What is an undesired high level of sound called? |
| A. | Air |
| B. | Music |
| C. | Noise |
| D. | Speakers |
| Answer» D. Speakers | |
| 5. |
Where are the catalytic converters fitted? |
| A. | Plants |
| B. | Automobiles |
| C. | Electrostatic precipitator |
| D. | Cycles |
| Answer» C. Electrostatic precipitator | |
| 6. |
What does CPCB stand for? |
| A. | Central Particulate Control Board |
| B. | Central Panama Channel Board |
| C. | Central Pollution Control Board |
| D. | Central Pollution Channel Board |
| Answer» D. Central Pollution Channel Board | |
| 7. |
Which component of an electrostatic precipitator can remove gases like sulphur dioxide through a spray of water or lime? |
| A. | Detergent |
| B. | Electrode wires |
| C. | Corona |
| D. | Scrubber |
| Answer» E. | |
| 8. |
Which is the most widely used technique for removing particulate matter? |
| A. | Loudspeakers |
| B. | Growing trees |
| C. | Electrostatic precipitator |
| D. | Magnets |
| Answer» D. Magnets | |
| 9. |
Which industries release particulate air pollutants along with harmless gases, such as nitrogen, oxygen, etc.? |
| A. | Oil industry |
| B. | Invitro Fertilization clinics |
| C. | Plant tissue culture labs |
| D. | Thermal power plants and smelters |
| Answer» E. | |
| 10. |
On what does the harmful effect of pollution depend on? |
| A. | The concentration of pollutants and the organism |
| B. | The concentration, duration of exposure to pollutants and the organism |
| C. | The concentration of pollutants and duration of exposure |
| D. | The organism only |
| Answer» C. The concentration of pollutants and duration of exposure | |
| 11. |
What is the impact of air pollution on plants? |
| A. | Infection in the lungs |
| B. | Irritation in eyes |
| C. | Reduce growth and yield of crops |
| D. | Deafening of ears |
| Answer» D. Deafening of ears | |
| 12. |
Which act was passed to protect and improve the quality of our environment? |
| A. | The Mental Healthcare Act |
| B. | The Coal Mines Act |
| C. | The National Sports University Act |
| D. | Environment Protection Act |
| Answer» E. | |
| 13. |
When did the Government of India pass the Environment Protection Act? |
| A. | 1990 |
| B. | 1986 |
| C. | 1896 |
| D. | 2000 |
| Answer» C. 1896 | |
| 14. |
What are the agents that bring about such an undesirable change (pollution) are called? |
| A. | Pollutants |
| B. | Haptens |
| C. | Adjuvants |
| D. | Vaccine |
| Answer» B. Haptens | |
| 15. |
What is an undesirable change in physical, chemical, or biological characteristics of air, land, water, or soil due to the introduction of contaminants called? |
| A. | Succession |
| B. | Pollution |
| C. | Conservation |
| D. | Extinction |
| Answer» C. Conservation | |