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. |
CFCs are ideal to use in refrigerators and |
| A. | Cosmetics |
| B. | Detergents |
| C. | Chemicals |
| D. | Aerosol spray cans |
| Answer» E. | |
| 2. |
Acidic oxides such as sulphates and nitrates, cause corrosion of |
| A. | Copper |
| B. | Aluminium |
| C. | Anode |
| D. | Building materials |
| Answer» E. | |
| 3. |
'Bromine' free radical are more destructive than |
| A. | Carbon |
| B. | Chlorine |
| C. | Phosphorous |
| D. | Nitrogen |
| Answer» C. Phosphorous | |
| 4. |
Which chemical is produced from a jet engine? |
| A. | Bromine Oxide |
| B. | Nitrogen Oxide |
| C. | Nitric Oxide |
| D. | Carbon dioxide |
| Answer» D. Carbon dioxide | |
| 5. |
Infrared radiation is also known as: |
| A. | Light |
| B. | Ultra-violet radiation |
| C. | Long Wave radiations |
| D. | Short Wave radiations |
| Answer» D. Short Wave radiations | |
| 6. |
Biomass energy is generated by converting organic matter into |
| A. | Pollution |
| B. | Solid |
| C. | Waste |
| D. | Energy |
| Answer» E. | |
| 7. |
USA by less than 5% of population, is responsible for how much of world emission? |
| A. | 70% |
| B. | 25% |
| C. | 30% |
| D. | 20% |
| Answer» C. 30% | |
| 8. |
Younger Dryas event is a Cold |
| A. | Climatic event |
| B. | Weather |
| C. | Windy event |
| D. | All of above |
| Answer» B. Weather | |
| 9. |
An excessive amount of carbon dioxide acts like a blanket over surface of: |
| A. | Earth |
| B. | Atmosphere |
| C. | Biosphere |
| D. | Universe |
| Answer» B. Atmosphere | |
| 10. |
Solar energy has greatest potential for providing clean and |
| A. | Non renewable energy |
| B. | Unreliable power |
| C. | Reliable power |
| D. | Un safe energy |
| Answer» D. Un safe energy | |
| 11. |
In hydropower, water power generating |
| A. | Waves |
| B. | Heat |
| C. | Electricity |
| D. | All of above |
| Answer» D. All of above | |
| 12. |
Exposure to ultraviolet rays can cause: |
| A. | Sun burn |
| B. | Actinic keratosis |
| C. | Solar elastosis |
| D. | All of above |
| Answer» E. | |
| 13. |
Ozone, in stratosphere is usually form over the |
| A. | Higher altitudes |
| B. | Poles of earth |
| C. | Equator |
| D. | Lower altitudes |
| Answer» D. Lower altitudes | |
| 14. |
'CFCs' also known as: |
| A. | Sreon |
| B. | Greon |
| C. | Nreon |
| D. | Freon |
| Answer» E. | |
| 15. |
A molecule consisting of three atoms of oxygen is |
| A. | Ozone |
| B. | Nitrous Oxide |
| C. | Carbon dioxide |
| D. | Nitrogen |
| Answer» B. Nitrous Oxide | |
| 16. |
Chloroflurocarbons are very powerful |
| A. | Atmospheric gas |
| B. | Poisonous gas |
| C. | Greenhouse gas |
| D. | Chemicals |
| Answer» D. Chemicals | |
| 17. |
What are two stages involved in photosynthesis? |
| A. | Light-dependent reactions and Calvin cycle |
| B. | Light energy and green chemical chlorophyll |
| C. | Cellular respiration and Carbon dioxide |
| D. | Glucose and Cellular respiration |
| Answer» B. Light energy and green chemical chlorophyll | |
| 18. |
'UNCED' held at Rio de Janeiro in |
| A. | 1992 |
| B. | 1980 |
| C. | 1988 |
| D. | 1989 |
| Answer» B. 1980 | |
| 19. |
An increase in exposure to ultraviolet radiations, may cause |
| A. | eye sight weakness |
| B. | Lungs infection |
| C. | Allergies |
| D. | Cataracts |
| Answer» B. Lungs infection | |
| 20. |
Re- transmitted energy of sun is known as |
| A. | Ionizing radiations |
| B. | Ultravoilet radiations |
| C. | Ultrawave radiation |
| D. | Thermal Radiation |
| Answer» E. | |
| 21. |
Perfluorocarbons (e.g. CF₄, C₂F₆) and sulphur hexafluoride (SF₆) has a long lasting atmospheric |
| A. | Reaction |
| B. | Lifetime |
| C. | chain Reactions |
| D. | Chemical Reaction |
| Answer» C. chain Reactions | |
| 22. |
'ozone' layer from high flying jet is much lower than |
| A. | CFCs |
| B. | CH₄ |
| C. | Cl |
| D. | N |
| Answer» B. CH₄ | |
| 23. |
Semi conductor silicon Boron, used in providing energy to: |
| A. | small devices |
| B. | Large devices |
| C. | Houses |
| D. | Industries |
| Answer» B. Large devices | |
| 24. |
Latent heat is heat absorbed when a substance changes from |
| A. | Gas to Liquid |
| B. | Liquid to Gas |
| C. | Liquid to Solid |
| D. | Solid to Liquid |
| Answer» C. Liquid to Solid | |
| 25. |
Principle, a polluter should pay, included in |
| A. | UN Environmental Program |
| B. | World Bank program |
| C. | Rio Declaration |
| D. | Environmental project |
| Answer» D. Environmental project | |
| 26. |
Fuels such as coal, oil and gas made by decomposition of an ancient |
| A. | Ancient animal and plant remains |
| B. | Ancient Rocks |
| C. | Ancient soil |
| D. | Ancient woods |
| Answer» B. Ancient Rocks | |
| 27. |
Evaporation' is process of: |
| A. | Turning from solid to liquid |
| B. | Turning from gas to solid |
| C. | Turning from liquid into vapors |
| D. | Turning from vapors into liquid |
| Answer» D. Turning from vapors into liquid | |
| 28. |
Hot bodies emit more radiation than |
| A. | Cold bodies |
| B. | Sun |
| C. | Heater |
| D. | Photovoltaic cells |
| Answer» B. Sun | |
| 29. |
About, thirty percent of earth area is covered by |
| A. | Grass |
| B. | Forests |
| C. | Rocks |
| D. | Stones |
| Answer» C. Rocks | |
| 30. |
Nitrogen and oxygen are used for |
| A. | Animals |
| B. | Plant Growth |
| C. | Algae |
| D. | All of these |
| Answer» C. Algae | |
| 31. |
Logging of forest usually occur in |
| A. | South America |
| B. | North America |
| C. | North Asia |
| D. | South east Asia |
| Answer» E. | |
| 32. |
Ozone concentration at equator is high due to |
| A. | Snowball |
| B. | Heat radiation |
| C. | Low light |
| D. | Sunshine |
| Answer» E. | |
| 33. |
Who discovered Antarctic 'ozone hole'? |
| A. | Robert Boyle and Isaac Newton |
| B. | Antoine Lavoisier and Louis Pasteu |
| C. | Auguste Laurent |
| D. | Farman, Gardiner and Shanklin |
| Answer» E. | |
| 34. |
Nitric oxide gas reacts with ozone molecule to form |
| A. | Nitrogen di Oxide |
| B. | Nitrogen Oxide |
| C. | Bromine Oxide |
| D. | Fluorine Oxide |
| Answer» B. Nitrogen Oxide | |
| 35. |
Atmospheric concentration of CO₂ has increased about |
| A. | 0.3 |
| B. | 0.5 |
| C. | 0.8 |
| D. | 0.9 |
| Answer» B. 0.5 | |
| 36. |
Process involved in wind passing over blades, converted into |
| A. | mechanical power |
| B. | Electrical power |
| C. | Light emitting diodes |
| D. | Wind energy |
| Answer» B. Electrical power | |
| 37. |
Tropical forests are a major source of infrastructure developments, such as oil exploitation and |
| A. | Food processing |
| B. | Farming |
| C. | Hydropower dam construction |
| D. | Industrial construction |
| Answer» D. Industrial construction | |
| 38. |
Green revolution developed new strains of crops, ultimately responsible for increasing |
| A. | Wheat Production |
| B. | Food Production |
| C. | Fruites Production |
| D. | All of above |
| Answer» C. Fruites Production | |
| 39. |
'EESC' stands for |
| A. | Equivalent effective stratospheric chlorine |
| B. | Effective equivalent stratospheric chlorine |
| C. | Electro effective stabilized chemical |
| D. | Electronic equivalent stratopheric chlorine |
| Answer» B. Effective equivalent stratospheric chlorine | |
| 40. |
Global warming is causing major changes in the |
| A. | Natural atmospheric systems |
| B. | Weather Patterns of the world |
| C. | In the flora and Fauna |
| D. | in the rainfall |
| Answer» C. In the flora and Fauna | |
| 41. |
What causes effects of ozone layer ? |
| A. | Alpha Radiations |
| B. | Ultraviolet Radiations |
| C. | Gamma radiations |
| D. | Beta Radiations |
| Answer» C. Gamma radiations | |
| 42. |
Molecules can also be formed by a single element such as: |
| A. | Ozone |
| B. | Carbon dioxide |
| C. | Carbon monoxide |
| D. | Nitrogen oxide |
| Answer» B. Carbon dioxide | |
| 43. |
In 1987, montreal protocol agreement was scaling down of: |
| A. | Carbon dioxide Emissions |
| B. | CFCs Production |
| C. | GHGs Emissions |
| D. | Aerosols Emissions |
| Answer» C. GHGs Emissions | |
| 44. |
'PV' stands for |
| A. | Photovoltaic cell |
| B. | Promotional video |
| C. | Promotion Voltage |
| D. | Promo Volt |
| Answer» B. Promotional video | |
| 45. |
Deforestation can also accur naturally, such as |
| A. | Wild Fire |
| B. | Over grazing |
| C. | Farming |
| D. | Growing products |
| Answer» B. Over grazing | |
| 46. |
'HCFCs' can be used in refrigerants instead of |
| A. | CO₂ |
| B. | Chlorine |
| C. | CFCs |
| D. | CO₂ |
| Answer» D. CO₂ | |
| 47. |
Windmills are located at top of a tower to height about: |
| A. | 12 m |
| B. | 80 m |
| C. | 40 m |
| D. | 30 m |
| Answer» E. | |
| 48. |
In 1999, in which country the cyclone sweep away the coastal villages? |
| A. | India |
| B. | Bangladesh |
| C. | Pakistan |
| D. | Srilanka |
| Answer» D. Srilanka | |
| 49. |
'WMO' is a body set up established: |
| A. | UNEP |
| B. | UNCED |
| C. | UN |
| D. | IPCC |
| Answer» E. | |
| 50. |
Depletion of ozone layer published in scientific journals, in |
| A. | 1950s |
| B. | 1990s |
| C. | 1970s |
| D. | 1980s |
| Answer» E. | |