MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Ocean is a source for carbon monoxide. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
How does increase in temperature affect air pollution? |
| A. | Higher temperatures reduce air pollution |
| B. | Higher temperatures increase air pollution |
| C. | Temperature does not affect the air pollution levels |
| D. | Humidity factor is also necessary to predict variance of air pollution with temperature |
| Answer» C. Temperature does not affect the air pollution levels | |
| 3. |
What are the effects of sulphur dioxide on the human body? |
| A. | It causes the malfunction of liver and kidney |
| B. | It breaks down body’s immunity towards particulate matter and bacteria |
| C. | It causes blood cells to dilate thereby affecting blood flow through the circulatory system |
| D. | All of the mentioned |
| Answer» C. It causes blood cells to dilate thereby affecting blood flow through the circulatory system | |
| 4. |
Which of the following pollutants is the major contributor to photochemical smog? |
| A. | Peroxynitrates |
| B. | Hydroperoxides |
| C. | Nitrogen dioxide |
| D. | Ozone |
| Answer» E. | |
| 5. |
What is the effect of ozone on human respiratory system? |
| A. | It has higher affinity to bind with haemoglobin and does not allow binding of oxygen |
| B. | It causes the disfigurement of the alveoli reducing the surface area for gaseous transfer |
| C. | It damages lung tissues and aggravates asthma |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 6. |
Particles of what size are filtered by the nasal passage? |
| A. | >10micrometre |
| B. | >500 micrometre |
| C. | >1 mm |
| D. | >5 micrometre |
| Answer» B. >500 micrometre | |
| 7. |
The velocity of air reduces to zero by the time it reaches the bronchi. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
What is the primary function(s) of the alveoli? |
| A. | Transfer of oxygen to the blood |
| B. | Removal of carbon dioxide from the blood |
| C. | Transfer of toxic substances to the blood |
| D. | All of the mentioned |
| Answer» E. | |
| 9. |
The pulmonary section of the respiratory tract consists of ___________ |
| A. | Nose and mouth as well as down till epiglottis and larynx |
| B. | Bronchi down till the end of bronchiole |
| C. | Respiratory bronchiole, alveoli and alveoli ducts |
| D. | Alveoli ducts and alveoli |
| Answer» D. Alveoli ducts and alveoli | |
| 10. |
What is the primary standard level for carbon monoxide for assuring air quality? |
| A. | 10ppm |
| B. | 90ppm |
| C. | 1ppm |
| D. | 9ppm |
| Answer» E. | |