MCQOPTIONS
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MCQOPTIONS
This section includes 374 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The mean kinetic energy of one mole of gas per degree of freedom (on the basis of a kinetic theory of gases) is ___________ |
| A. | (1/2) kT |
| B. | (3/2) kT |
| C. | (3/2) RT |
| D. | (1/2) RT |
| Answer» E. | |
| 2. |
The degree of freedom in case of a monoatomic gas is ___________ |
| A. | 1 |
| B. | 3 |
| C. | 5 |
| D. | 2 |
| Answer» C. 5 | |
| 3. |
Surface the lake is at 2°C and depth of the lake is 20m. Find the temperature of the bottom of the lake? |
| A. | 2°C |
| B. | 3°C |
| C. | 4°C |
| D. | 552°C |
| Answer» E. | |
| 4. |
A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is? |
| A. | 4RT |
| B. | 9RT |
| C. | 11RT |
| D. | 15RT |
| Answer» D. 15RT | |
| 5. |
The average translational kinetic energy of O2 molecules (relative molar mass 32) at a particular temperature is 0.048eV. The translational kinetic energy of N2 molecules (relative molar mass) in eV at the same temperature is? |
| A. | 0.0015 |
| B. | 0.003 |
| C. | 0.048 |
| D. | 0.768 |
| Answer» D. 0.768 | |
| 6. |
A vessel contains one mole of O2 gas at a temperature T. The pressure of the gas is P. An identical vessel containing one hole of He gas at a temperature 2T has a pressure of? |
| A. | P/8 |
| B. | P |
| C. | 2P |
| D. | 8P |
| Answer» D. 8P | |
| 7. |
When an automobile travels for a long distance, the pressure in the gas? |
| A. | Increases slightly |
| B. | Decreases slightly |
| C. | Remains the same |
| D. | Decreases and then increases |
| Answer» B. Decreases slightly | |
| 8. |
At constant volume temperature is increases, then ___________ |
| A. | Collisions on walls will be less |
| B. | Number of collisions per unit time will increase |
| C. | Collisions will be in straight line |
| D. | Collisions will not change |
| Answer» C. Collisions will be in straight line | |
| 9. |
Assertion: In the pressure-temperature phase diagram of water, the slope of the melting curve is found to be negative.Reason: Ice contracts on melting to water. |
| A. | Both assertion and reason are true and the reason is the correct explanation of the assertion |
| B. | Both assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | Assertion it true but the reason is false |
| D. | Both assertion and reason are false |
| Answer» C. Assertion it true but the reason is false | |
| 10. |
Sink of nitrous oxide is photodissociation in the |
| A. | Thermosphere |
| B. | Troposhere |
| C. | Stratosphere |
| D. | Ionosphere |
| Answer» D. Ionosphere | |
| 11. |
'HCFCs' are less potent than |
| A. | CFCs |
| B. | Carbondioxide |
| C. | Oxygen |
| D. | Argon |
| Answer» B. Carbondioxide | |
| 12. |
What does an increase in carbon dioxide in atmosphere contribute? |
| A. | Humidity |
| B. | Global warming |
| C. | Greenhouse effects |
| D. | Both b and c |
| Answer» E. | |
| 13. |
What is lifespan of 'methane' in atmosphere? |
| A. | 12 Years |
| B. | 16 years |
| C. | 90 Years |
| D. | 50 years |
| Answer» B. 16 years | |
| 14. |
What reduces the nitrogen oxide from the car? |
| A. | Catalytic Converter |
| B. | Photovoltaic cells |
| C. | Solar Plates |
| D. | Catalytic Cells |
| Answer» B. Photovoltaic cells | |
| 15. |
According to a sharp contrast, methane is considered as a less important greenhouse gas than |
| A. | Carbon dioxide |
| B. | Carbon monoxide |
| C. | Nitrogen |
| D. | Argon |
| Answer» B. Carbon monoxide | |
| 16. |
Methane' is emitted through leakages in the |
| A. | Water pipelines |
| B. | Gas pipelines |
| C. | pipeline transport |
| D. | pipeline tracks |
| Answer» C. pipeline transport | |
| 17. |
Methane's concentration in atmosphere is less than |
| A. | Carbon dioxide |
| B. | Nitrogen |
| C. | Pottasium |
| D. | Carbon monoxide |
| Answer» B. Nitrogen | |
| 18. |
Nitrous oxide is a minor |
| A. | Gas |
| B. | Fuel |
| C. | Greenhouse gas |
| D. | pollutant |
| Answer» D. pollutant | |
| 19. |
Nitrous oxide' is used as |
| A. | Cosmetics |
| B. | Anaesthetic |
| C. | Detergents |
| D. | Cleaning agent |
| Answer» C. Detergents | |
| 20. |
Common name of 'methane' is |
| A. | Ozone Gas |
| B. | Marsh Gas |
| C. | GHGs |
| D. | Fossil fuels |
| Answer» C. GHGs | |
| 21. |
Methane can be seen bubbling up from: |
| A. | Mountainous area |
| B. | Hilly areas |
| C. | Coastal areas |
| D. | Marshy areas |
| Answer» E. | |
| 22. |
What contributes to chemical destruction of atmospheric ozone? |
| A. | Nitrogen |
| B. | Bromine |
| C. | Sulfur |
| D. | Both a and b |
| Answer» E. | |
| 23. |
What is atmospheric life time of Nitrous oxide? |
| A. | 115 Years |
| B. | 120 Years |
| C. | 127 Years |
| D. | 129 Years |
| Answer» B. 120 Years | |
| 24. |
The ozone layer absorbs what range of wavelengths of the sun’s radiation? |
| A. | 0.80 nm – 1.50 nm |
| B. | 200 nm – 315 nm |
| C. | 450 nm – 570 nm |
| D. | 600 nm – 750 nm |
| Answer» C. 450 nm – 570 nm | |
| 25. |
'CFCs' stands for |
| A. | Chloroflorocarbons |
| B. | Chlorineflorine Carbons |
| C. | Climate Control Corperation |
| D. | Climate Command Coorperation |
| Answer» B. Chlorineflorine Carbons | |
| 26. |
'CFCs' emission in atmosphere is controlled under supervision of |
| A. | Rio de jenro |
| B. | Montreal Protocol |
| C. | United Nation Environmental Development |
| D. | Climate Change Protocol |
| Answer» C. United Nation Environmental Development | |
| 27. |
Methane' can be removed from atmosphere by |
| A. | Chemical reaction |
| B. | Chemical destrcution process |
| C. | Ionization |
| D. | Hydrogen Bonding |
| Answer» C. Ionization | |
| 28. |
Nitrous oxide concentration in atmosphere is approximately |
| A. | 0.3 ppm |
| B. | 0.4ppm |
| C. | 0.5ppm |
| D. | 0.9ppm |
| Answer» B. 0.4ppm | |
| 29. |
Which of the following UV radiations is responsible for causing sun burns and skin cancer? |
| A. | UV-A |
| B. | UV-B |
| C. | UV-C |
| D. | All of the mentioned |
| Answer» C. UV-C | |
| 30. |
The long UV-B radiations are important for vitamin D production of the skin. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 31. |
Nitrous oxide is 16% greater than in |
| A. | pre-industrial times. |
| B. | Post-industrial times. |
| C. | Industrial revolution |
| D. | Prerequisite time |
| Answer» B. Post-industrial times. | |
| 32. |
The ozone hole is a phenomenon that has occurred in: |
| A. | Arctic region |
| B. | Northern temperate region |
| C. | Southern temperate region |
| D. | None of the mentioned |
| Answer» E. | |
| 33. |
Nitrous oxide emission from human activities, included |
| A. | Detergents |
| B. | Fertilizer |
| C. | chemicals |
| D. | CFCs |
| Answer» C. chemicals | |
| 34. |
Average lifetime of methane in atmosphere is determined by |
| A. | Rate of reaction process |
| B. | Rate of destruction process |
| C. | Rate of growth process |
| D. | Rate of Loss process |
| Answer» E. | |
| 35. |
Which GHGs is known as a laughing Gas? |
| A. | Nitrous Oxide |
| B. | Sulphuric Acid |
| C. | Ozone |
| D. | CFCs |
| Answer» B. Sulphuric Acid | |
| 36. |
In which country, the switch from coal fired to natural gas fired power station because the sulphur content is low? |
| A. | London |
| B. | U.K |
| C. | California |
| D. | Paris |
| Answer» C. California | |
| 37. |
Methane' is produced fron landfill sites due to |
| A. | Incineration process |
| B. | Pesticides |
| C. | Fertilizers |
| D. | Deforestation |
| Answer» B. Pesticides | |
| 38. |
Chloroflorocarbons (CFCS) are: |
| A. | Greenhouse Gases |
| B. | Food product |
| C. | Ingredents |
| D. | Detergents |
| Answer» B. Food product | |
| 39. |
Why CBG is good energy? |
| A. | Because it reduces ozone forming emission |
| B. | It reduces pollutants |
| C. | Better type of energy |
| D. | Less pollutants |
| Answer» B. It reduces pollutants | |
| 40. |
Between what altitudes, is the ozone layer found in highest concentrations? |
| A. | 10-20km |
| B. | 20-40km |
| C. | 40-55km |
| D. | 55-70km |
| Answer» C. 40-55km | |
| 41. |
Nitrous oxide has contributed about |
| A. | 0.08 |
| B. | 0.06 |
| C. | 0.09 |
| D. | 0.02 |
| Answer» C. 0.09 | |
| 42. |
What strategy has been implemented to reduce the air pollution from vehicles from India? |
| A. | By using Coal |
| B. | By using CNG |
| C. | By using Petrol |
| D. | By using Diesel |
| Answer» C. By using Petrol | |
| 43. |
Which city has the clean and efficient underground railway? |
| A. | California |
| B. | South Africa |
| C. | Cairo |
| D. | Pakistan |
| Answer» D. Pakistan | |
| 44. |
Atmospheric methane concentrations is: |
| A. | 0.78 |
| B. | 0.25 |
| C. | 0.24 |
| D. | 0.2 |
| Answer» D. 0.2 | |
| 45. |
What are flue Gases? |
| A. | Emitting from the chimmy's |
| B. | From Industries |
| C. | From houses |
| D. | From vehicles |
| Answer» B. From Industries | |
| 46. |
What are fluorinated greenhouse gases? |
| A. | Xenon and argon |
| B. | Argon and ammonia |
| C. | Hydrofluorocarbons, Perfluorocarbons |
| D. | All of above |
| Answer» D. All of above | |
| 47. |
Amount of water vopours in atmosphere does not change because of |
| A. | Fossil Fuel |
| B. | Human Activities |
| C. | Deforestation |
| D. | Urbanization |
| Answer» C. Deforestation | |
| 48. |
Both biomass burning and chemical industry emits |
| A. | Nitrous Oxide |
| B. | Sulphur Oxide |
| C. | Carbon dioxide |
| D. | Carbon monoxide |
| Answer» B. Sulphur Oxide | |
| 49. |
What efforts has been taken by the Indian government to protect the pristine white marble of Taj Mahal? |
| A. | Smoke free and batter power cabs are allowed only |
| B. | Ban on vehicles entry |
| C. | Pollution reduction strategies |
| D. | Air Pollutions restricted area |
| Answer» B. Ban on vehicles entry | |
| 50. |
Nitrogen also helps in preventing UV rays from reaching the Earth. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |