MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Rubber cracking of tyres and electrical insulation is caused by |
| A. | O₃ and PAN |
| B. | Lead Poisoning |
| C. | SO₂, NO₂, O₃ |
| D. | PAN |
| Answer» B. Lead Poisoning | |
| 2. |
Hydrogen sulphide is produced from |
| A. | Oxidation of sulphur |
| B. | Reduction of sulphur |
| C. | Addition of sulphur |
| D. | All of above |
| Answer» C. Addition of sulphur | |
| 3. |
Airshed modelling takes into account the effects of only stationary sources and not the mobile sources of pollution. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 4. |
Which type of plume has a wavy shape and occurs in a highly unstable atmosphere? |
| A. | Looping |
| B. | Coning |
| C. | Fanning |
| D. | Trapping |
| Answer» B. Coning | |
| 5. |
Which of the following is a source for boron air pollution? |
| A. | Rockets and jets |
| B. | Automobiles |
| C. | Soap industries |
| D. | Refrigerants |
| Answer» B. Automobiles | |
| 6. |
Which animal is highly susceptible in farm animals? |
| A. | Beef |
| B. | Cattles |
| C. | sheep |
| D. | Pig |
| Answer» C. sheep | |
| 7. |
Natural O₃ is present in |
| A. | Lithosphere |
| B. | Stratosphere |
| C. | Thermosphere |
| D. | Hydrological cycle |
| Answer» C. Thermosphere | |
| 8. |
'Baking soda' and 'lime' has |
| A. | Low pH |
| B. | High pH |
| C. | Medium PH |
| D. | No PH |
| Answer» C. Medium PH | |
| 9. |
Which of the following is regarded as climate control factor(s)? |
| A. | Latitude |
| B. | Elevation |
| C. | Ocean currents |
| D. | All of the mentioned |
| Answer» E. | |
| 10. |
Crocidolite, actionide and amosite belong to which of the following category of pollutants? |
| A. | Particulate matter |
| B. | Asbestos |
| C. | Dioxins |
| D. | Cigarette smoke |
| Answer» C. Dioxins | |
| 11. |
Term 'aerosol' is applicable as long as particle is suspended in |
| A. | Water |
| B. | Air |
| C. | Soil |
| D. | Objects |
| Answer» C. Soil | |
| 12. |
What are 'anthropogenic' sources of CO? |
| A. | Industries, Motor Vehicles |
| B. | Forest fire |
| C. | Volcanic Eruption |
| D. | Deforestation |
| Answer» B. Forest fire | |
| 13. |
The movement of particles from region of lower vapour to high vapour molecule concentration is known as diffusiophoresis. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 14. |
What does the word ‘meteorology’ define? |
| A. | Study of meteors and asteroids |
| B. | Study of measurements and instruments |
| C. | Study of chemical properties of metals |
| D. | Study of the weather and atmospheric changes |
| Answer» E. | |
| 15. |
Which is the largest source for production of nitrous oxide? |
| A. | Chemical industry |
| B. | Fertiliser industry |
| C. | Fossil fuel combustion |
| D. | Bacterial action |
| Answer» E. | |
| 16. |
What is the composition of photochemical smog? |
| A. | Nitrogen oxides, ketones and ozone |
| B. | VOCs and hydrocarbons |
| C. | Peroxy-acetyl-nitrate, peroxy-benzoyl-nitrate, peroxy fornyl-nitrate |
| D. | All of the mentioned |
| Answer» E. | |
| 17. |
Estimated annual emission of CO on global scale is |
| A. | 75 million tones |
| B. | 85 million tones |
| C. | 55 million tones |
| D. | 95 million tones |
| Answer» B. 85 million tones | |
| 18. |
What damages house paints? |
| A. | Water pollution |
| B. | Acid Deposition |
| C. | CFCs |
| D. | Nox |
| Answer» C. CFCs | |
| 19. |
Alkenes generally known as |
| A. | Olefins |
| B. | Alkenes |
| C. | Alkynes |
| D. | Hydrocarbons |
| Answer» B. Alkenes | |
| 20. |
Some bacteria form a spores in atmosphere live for |
| A. | together |
| B. | lifespan |
| C. | Short period |
| D. | Longer period |
| Answer» E. | |
| 21. |
Which of the following is an inorganic pollutant? |
| A. | Carbon monoxide |
| B. | Carbonyl compounds |
| C. | Aromatic hydrocarbons |
| D. | None of the mentioned |
| Answer» B. Carbonyl compounds | |
| 22. |
Conning occurs in neutral atmosphere, when wind velocity is greater than |
| A. | 32 km per hour |
| B. | 42 km per hour |
| C. | 52 km per hour |
| D. | 72 km per hour |
| Answer» B. 42 km per hour | |
| 23. |
What does the Richardson number indicate in wind analysis? |
| A. | Mechanical turbulence |
| B. | Convective heat production |
| C. | Mechanical turbulence & Convective heat production |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 24. |
Liquid particles formed by atomization of parent liquid is known as |
| A. | Dust particles |
| B. | Fumes |
| C. | Spray |
| D. | Fly Ash |
| Answer» B. Fumes | |
| 25. |
How does nitrogen affect the human body? |
| A. | Increases vulnerability to pathogens |
| B. | Destroys the macrophages |
| C. | Injures the defence mechanism of the lungs |
| D. | All of the mentioned |
| Answer» E. | |
| 26. |
The acidic air pollutants reach the Earth’s surface because of wet deposition only. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 27. |
Most of marine species die, if 'pH' falls from |
| A. | 7 |
| B. | 6 |
| C. | 4.5 |
| D. | 8 |
| Answer» D. 8 | |
| 28. |
Which plant helps in detection of pollution from automobile exhaust? |
| A. | Neem |
| B. | Tulsi |
| C. | Lichen |
| D. | Lettuce |
| Answer» C. Lichen | |
| 29. |
Which two gases involved in formation of acid rain ? |
| A. | Nitrogen and Sulfur |
| B. | Nitrogen and Carbon |
| C. | Nitrogen and Oxygen |
| D. | Nitrogen and Magnesium |
| Answer» B. Nitrogen and Carbon | |
| 30. |
TCDD is a human carcinogen. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 31. |
Which pollutants damage protective coating and paints of surface? |
| A. | Aerosols |
| B. | Sox and Nox |
| C. | PAN |
| D. | SO₂, O₃, H₂S |
| Answer» E. | |
| 32. |
In-situ cross stack analysers work behind which of the following principles? |
| A. | Differential absorption spectroscopy |
| B. | Gas-filter correlation spectroscopy |
| C. | Differential absorption & Gas-filter correlation spectroscopy |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 33. |
What is the pH required for the survival of aquatic animals and plants? |
| A. | 7 |
| B. | 7.5 |
| C. | 6.5 |
| D. | 4.8 |
| Answer» E. | |
| 34. |
Which of the following gases are main contributors to acid rain? |
| A. | Carbon dioxide and carbon monoxide |
| B. | Sulphur dioxide and carbon dioxide |
| C. | Sulphur dioxide and nitrogen dioxide |
| D. | Sulphur dioxide and nitrous oxide |
| Answer» E. | |
| 35. |
How much an average man breathe per day? |
| A. | 22000 times |
| B. | 23000 times |
| C. | 24000 times |
| D. | 27000 times |
| Answer» B. 23000 times | |
| 36. |
What is the disadvantage of using conductometric analysers? |
| A. | Low sensitivity |
| B. | Interfering gases must be removed before monitoring process |
| C. | Medium used to measure change in conductivity is expensive |
| D. | All of the mentioned |
| Answer» C. Medium used to measure change in conductivity is expensive | |
| 37. |
Both, vinegar and lemon juice has a |
| A. | High pH |
| B. | Low pH Value |
| C. | 0 pH |
| D. | Medium pH |
| Answer» C. 0 pH | |
| 38. |
Dust, smoke, fly ash and fume are |
| A. | Solid particulate |
| B. | liquid particulate |
| C. | Gas particulates |
| D. | All of them |
| Answer» B. liquid particulate | |
| 39. |
What does plants sensitivity in air pollution depends on ? |
| A. | Fertility |
| B. | Light |
| C. | planted seeds |
| D. | Smog |
| Answer» B. Light | |
| 40. |
What is concentration of carbon dioxide in atmosphere? |
| A. | 650ppm |
| B. | 350ppm |
| C. | 450ppm |
| D. | 950ppm |
| Answer» C. 450ppm | |
| 41. |
CO effects central nervous system causes |
| A. | Lung disease |
| B. | High mortality rate |
| C. | Cancer |
| D. | Infections |
| Answer» C. Cancer | |
| 42. |
Which of the following gases vary significantly over time and place at the atmospheric boundary level? |
| A. | Carbon dioxide |
| B. | Ozone |
| C. | Water vapour |
| D. | Oxygen |
| Answer» D. Oxygen | |
| 43. |
Acid impairs plays vital role in nutrient cycle and: |
| A. | Transpiration |
| B. | Photosynthesis |
| C. | Nitrogen Fixation |
| D. | Growth of plants |
| Answer» D. Growth of plants | |
| 44. |
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 | |
| 45. |
What reduces amount of light reaching leaf? |
| A. | Sulfur oxide emission |
| B. | Carbon dioxide |
| C. | Dust and Smog |
| D. | Nitrogen |
| Answer» D. Nitrogen | |
| 46. |
What is the size range of respirable suspended particulate matter? |
| A. | Less than 1 micrometre |
| B. | Less than 10 micrometre |
| C. | Less than 100 micrometre |
| D. | Less than 0.1 micrometre |
| Answer» C. Less than 100 micrometre | |
| 47. |
Narrow valleys are favorable to inversion because horizontal air movement is |
| A. | Decreased |
| B. | Favorable |
| C. | Possible |
| D. | Restricted |
| Answer» E. | |
| 48. |
What is threshold limit value of H₂S? |
| A. | 10ppm |
| B. | 20ppm |
| C. | 30ppm |
| D. | 40ppm |
| Answer» B. 20ppm | |
| 49. |
Electroanalytical monitors rely on which of the following methods? |
| A. | Polarography and amperometric analysis |
| B. | Polarography and electrocatalysis |
| C. | Polarography, electrocatalysis and conductivity |
| D. | All of the mentioned |
| Answer» E. | |
| 50. |
Which of the following belongs to class of extremely toxic dioxin compound(s)? |
| A. | Polychlorinated dibenzo-p-dioxins |
| B. | Polychlorinated dibenzofurans |
| C. | Polychlorinated biphenyls |
| D. | All of the mentioned |
| Answer» E. | |