MCQOPTIONS
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MCQOPTIONS
This section includes 428 Mcqs, each offering curated multiple-choice questions to sharpen your Power Systems knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
Which of the following is not a part of photochemical smog? |
| A. | NO₂ |
| B. | O₃ |
| C. | PAN |
| D. | SPM |
| Answer» E. | |
| 402. |
The minimum size of the smoke particle is ___________ |
| A. | 0.2μm |
| B. | 1μm |
| C. | 0.8μm |
| D. | 0.5μm |
| Answer» E. | |
| 403. |
Which of the following leads to a disease called broncho spasm? |
| A. | SO₂ |
| B. | SO₃ |
| C. | SO₄ |
| D. | CO₂ |
| Answer» C. SO₄ | |
| 404. |
The permissible concentration of PM 10 in the air is ___________ |
| A. | 60μg/m³ |
| B. | 40μg/m³ |
| C. | 50μg/m³ |
| D. | 20μg/m³ |
| Answer» B. 40μg/m³ | |
| 405. |
Which of the following is a secondary air pollutant? |
| A. | SPM |
| B. | PAN |
| C. | SO₂ |
| D. | NO₂ |
| Answer» C. SO₂ | |
| 406. |
Which of the following are contradictory plume? |
| A. | Lofting and fumigating |
| B. | Looping and coning |
| C. | Neutral and lofting |
| D. | Fumigating and trapping |
| Answer» B. Looping and coning | |
| 407. |
The upward vertical rise prevails in which of the following plume? |
| A. | Trapping |
| B. | Fanning |
| C. | Looping |
| D. | Neutral |
| Answer» E. | |
| 408. |
In which of the following plumes, stable condition prevails? |
| A. | Lofting |
| B. | Fanning |
| C. | Neutral |
| D. | Fumigating |
| Answer» C. Neutral | |
| 409. |
In which of the following plumes, unstable condition prevails? |
| A. | Trapping |
| B. | Fanning |
| C. | Looping |
| D. | Neutral |
| Answer» D. Neutral | |
| 410. |
Which of the following plume is worst for the dispersion of pollutants? |
| A. | Trapping |
| B. | Fanning |
| C. | Neutral |
| D. | Fumigating |
| Answer» E. | |
| 411. |
Which of the following gas is not colorless? |
| A. | NO |
| B. | O₃ |
| C. | Pb |
| D. | SO₃ |
| Answer» B. O₃ | |
| 412. |
Which air pollutant cause corrosion of building? |
| A. | SO₂ |
| B. | SO₃ |
| C. | CO |
| D. | NO₂ |
| Answer» B. SO₃ | |
| 413. |
Concentration of fluorine that cause a phototoxicological effect on the plant is ___________ |
| A. | 0.1μg/m³ |
| B. | 0.3μg/m³ |
| C. | 0.5μg/m³ |
| D. | 1μg/m³ |
| Answer» C. 0.5μg/m³ | |
| 414. |
The size of cigarette particles is ______________ |
| A. | 1μm |
| B. | 10μm |
| C. | <1μm |
| D. | >10μm |
| Answer» D. >10μm | |
| 415. |
Which of the following air pollutant effects plants the most? |
| A. | Fluorine |
| B. | SO₂ |
| C. | PAN |
| D. | HCl |
| Answer» B. SO₂ | |
| 416. |
X ray films are a source of which of the following gas? |
| A. | SO₂ |
| B. | CO₂ |
| C. | NO₂ |
| D. | SO₃ |
| Answer» D. SO₃ | |
| 417. |
Which of the following is a liquid form of aerosol? |
| A. | Fume |
| B. | Dust |
| C. | Mist |
| D. | Smoke |
| Answer» D. Smoke | |
| 418. |
Which of the following is involved in production of carboxy haemoglobin? |
| A. | CO |
| B. | SO₂ |
| C. | NO₂ |
| D. | NO₃ |
| Answer» B. SO₂ | |
| 419. |
The maximum size of fly ash is ___________ |
| A. | 1μm |
| B. | 100μm |
| C. | 1000μm |
| D. | 10μm |
| Answer» D. 10μm | |
| 420. |
Which gas is mainly produced due to incomplete burning of wood? |
| A. | CO |
| B. | SO₂ |
| C. | NO₂ |
| D. | NO₃ |
| Answer» B. SO₂ | |
| 421. |
Nuclear power plants are suitable only for load factor over _________ |
| A. | 0.5 |
| B. | 0.7 |
| C. | 0.3 |
| D. | 0.8 |
| Answer» E. | |
| 422. |
Hydroelectric power plants with limited storage are suitable to supply __________ |
| A. | Base load |
| B. | Peak load |
| C. | Base load and Peak load |
| D. | Average load |
| Answer» D. Average load | |
| 423. |
Which of the following is mostly affected by thermal power plant pollutants? |
| A. | Lithosphere |
| B. | Atmosphere |
| C. | Hydrosphere |
| D. | Exosphere |
| Answer» C. Hydrosphere | |
| 424. |
Which of the following pollutant causes acid rain? |
| A. | NO |
| B. | CO<sub>2</sub> |
| C. | SO<sub>2</sub> |
| D. | NO<sub>2</sub> |
| Answer» D. NO<sub>2</sub> | |
| 425. |
Which of the following pollutants emitted by thermal power plant is a cause of global warming? |
| A. | NO |
| B. | CO<sub>2</sub> |
| C. | SO<sub>2</sub> |
| D. | NO<sub>2</sub> |
| Answer» C. SO<sub>2</sub> | |
| 426. |
Which of the following pollutants emitted by thermal power plant causes irritation in Eyes? |
| A. | Oxides of sulphur |
| B. | Oxides of Nitrogen |
| C. | Oxides of Mercury |
| D. | Oxides of carbon |
| Answer» C. Oxides of Mercury | |
| 427. |
Which of the following gas is not emitted during combustion of coal? |
| A. | Oxides of sulphur |
| B. | Oxides of Nitrogen |
| C. | Oxides of Mercury |
| D. | Oxides of carbon |
| Answer» D. Oxides of carbon | |
| 428. |
Which of the following power plant causes highest amount of air pollution? |
| A. | Thermal power plant |
| B. | Hydroelectric power plant |
| C. | Nuclear power plant |
| D. | Geothermal power plant |
| Answer» B. Hydroelectric power plant | |