MCQOPTIONS
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MCQOPTIONS
This section includes 63 Mcqs, each offering curated multiple-choice questions to sharpen your Applied Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
__________ photo voltaic devices in the form of thin films. |
| A. | Cadmium Telluroide |
| B. | Cadmium oxide |
| C. | Cadmium sulphide |
| D. | Cadmium sulphate |
| Answer» B. Cadmium oxide | |
| 2. |
The geothermal energy is the ________ from the earth. |
| A. | Heat |
| B. | Light |
| C. | Photons |
| D. | Protons |
| Answer» B. Light | |
| 3. |
__________ is a direct band gap material. |
| A. | Copper Indium Gallium Selenide |
| B. | Copper Selenide |
| C. | Copper Gallium Telluride |
| D. | Copper Indium Gallium Diselenide |
| Answer» B. Copper Selenide | |
| 4. |
Solar power is a good __________ renewable source. |
| A. | Commercial |
| B. | Economical |
| C. | Commercial and economical |
| D. | Neither commercial nor economical |
| Answer» C. Commercial and economical | |
| 5. |
________ are used for low flow water. |
| A. | Pelton turbines |
| B. | Francis turbines |
| C. | Propeller turbines |
| D. | Turgo turbines |
| Answer» B. Francis turbines | |
| 6. |
Non conventional energy sources are those energy sources that are _________ |
| A. | Renewable |
| B. | Non-renewable |
| C. | Produced from electricity |
| D. | Produced from heat |
| Answer» B. Non-renewable | |
| 7. |
The term photo voltaic comes from ________ |
| A. | Spanish |
| B. | Greek |
| C. | German |
| D. | English |
| Answer» C. German | |
| 8. |
_________ can be used for recharging the portable devices. |
| A. | Solar photovoltaic cells |
| B. | Solar panels |
| C. | Solar batteries |
| D. | Solar dishes |
| Answer» C. Solar batteries | |
| 9. |
The main application of solar cells is to generate the electricity from __________ |
| A. | Water |
| B. | Sunlight |
| C. | Wind |
| D. | Biomass |
| Answer» C. Wind | |
| 10. |
For larger flow of water, what type of propellers can be used? |
| A. | Pelton turbines |
| B. | Francis turbines |
| C. | Propeller turbines |
| D. | Multi jet turbines |
| Answer» D. Multi jet turbines | |
| 11. |
Solar photovoltaic cells are often connected electrically in _______ |
| A. | Series |
| B. | Parallel |
| C. | Randomly |
| D. | Neither series nor parallel |
| Answer» B. Parallel | |
| 12. |
Solar cells are made from bulk materials that are cut into wafer of _________ thickness. |
| A. | 120-180μm |
| B. | 120-220μm |
| C. | 180-220μm |
| D. | 180-240μm |
| Answer» E. | |
| 13. |
___________ are like a wind turbines immersed in water and used to extract power from large flow of water. |
| A. | River current turbines |
| B. | Cross flow turbines |
| C. | Under shoot turbines |
| D. | Water wheel turbines |
| Answer» B. Cross flow turbines | |
| 14. |
Dye-sensitized solar cells are made from ________ organic dye. |
| A. | Ruthium melallo |
| B. | Aniline |
| C. | Safranine |
| D. | Induline |
| Answer» B. Aniline | |
| 15. |
During the last 620 billion years, the earths period of rotation is ________ than that of the rotation of earth since its formation. |
| A. | Faster |
| B. | Slower |
| C. | Very faster |
| D. | No change |
| Answer» C. Very faster | |
| 16. |
The slow down of earths rotation due to the loss of mechanical energy of earth moon system is since _______ years from earths formation. |
| A. | 1 billion |
| B. | 2.5 billion |
| C. | 3.5 billion |
| D. | 4.5 billion |
| Answer» E. | |
| 17. |
The kinetic energy is used to make power in __________ method. |
| A. | Tidal lagoon method |
| B. | Dynamic tidal power |
| C. | Tidal barrage method |
| D. | Tidal steam generator |
| Answer» E. | |
| 18. |
The tidal forces are ______________ in gravitational attraction exerted by celestial bodies. |
| A. | Aperiodic variations |
| B. | Periodic variations |
| C. | Continuous |
| D. | Discrete |
| Answer» C. Continuous | |
| 19. |
In ocean thermal energy conversion, the plant pumps the deep cold sea water and do not pump the surface sea water. |
| A. | True |
| B. | False |
| Answer» C. | |
| 20. |
Tidal power is taken from earths __________ tides. |
| A. | Sea |
| B. | Oceanic |
| C. | Other water sources |
| D. | River |
| Answer» C. Other water sources | |
| 21. |
The loss of mechanical energy due to movement of tides in earth moon system causes the rotation of earth _______ |
| A. | Slow |
| B. | Fast |
| C. | Very fast |
| D. | Remains same |
| Answer» B. Fast | |
| 22. |
The tidal barrage method uses kinetic energy and tidal lagoon method uses potential energy to produce electricity. |
| A. | True |
| B. | False |
| Answer» C. | |
| 23. |
In how many types the tidal power is generated? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 24. |
The both potential and kinetic energy is used in _________ method. |
| A. | Dynamic tidal power |
| B. | Tidal lagoon method |
| C. | Tidal barrage method |
| D. | Tidal steam generator |
| Answer» B. Tidal lagoon method | |
| 25. |
Due to ________ the bulge is created in the water level. |
| A. | weak attraction forces |
| B. | Vanderwals forces |
| C. | Wave currents |
| D. | Strong attraction forces |
| Answer» E. | |
| 26. |
The worlds large scale tidal power plant is __________ |
| A. | Rance tidal power plant |
| B. | Uldolmok tidal power plant |
| C. | Kislaya guba tidal power plant |
| D. | Jiangxia tidal power plant |
| Answer» B. Uldolmok tidal power plant | |
| 27. |
The bulge in water will increases the sea level _________ |
| A. | Temporarily |
| B. | Permanently |
| C. | Only for seconds |
| D. | Only for a minute |
| Answer» B. Permanently | |
| 28. |
The ocean thermal energy conversion(OTEC) is uses ___________ |
| A. | Energy difference |
| B. | Potential difference |
| C. | Temperature difference |
| D. | Kinetic difference |
| Answer» D. Kinetic difference | |
| 29. |
Which one of the following is an example of starch crops biomass feed stocks? |
| A. | Sugar cane |
| B. | Wheat straw |
| C. | Corn stover |
| D. | Orchard prunings |
| Answer» B. Wheat straw | |
| 30. |
Bio ethanol is denatured alcohol that is also called as __________ |
| A. | Ethylene |
| B. | Methylated spirit |
| C. | Ethylene glycol |
| D. | Methylene |
| Answer» C. Ethylene glycol | |
| 31. |
The turbines in the tidal steam generator are placed at ___________ of water column. |
| A. | Bottom |
| B. | Top |
| C. | Right side |
| D. | Left side |
| Answer» B. Top | |
| 32. |
The reservoirs that are similar to the tidal barrages are created in tidal lagoon method and those are called as __________ |
| A. | Lagoons |
| B. | Wells |
| C. | Pots |
| D. | Tanks |
| Answer» B. Wells | |
| 33. |
The by-products that are produced during rectification of bio ethanol is used as_________ |
| A. | Pig feed |
| B. | Cow feed |
| C. | Dog feed |
| D. | Sheep feed |
| Answer» D. Sheep feed | |
| 34. |
Bio gas is compressed and used as ________ |
| A. | Motor fuel |
| B. | Fuels in vehicles |
| C. | Dog feed |
| D. | Cow feed |
| Answer» B. Fuels in vehicles | |
| 35. |
The pumping of lagoon will flatten out the _________ |
| A. | Tides |
| B. | Power output |
| C. | Water |
| D. | Low tides |
| Answer» C. Water | |
| 36. |
The bio methane is produced by the __________ of biomass. |
| A. | Aerobic oxidation |
| B. | Anaerobic oxidation |
| C. | Fermentation |
| D. | Rectification |
| Answer» C. Fermentation | |
| 37. |
The bio ethanol obtained in the fermentation process has __________ purity. |
| A. | 0.99 |
| B. | 0.992 |
| C. | 0.994 |
| D. | 0.997 |
| Answer» E. | |
| 38. |
The OTEC is constructed in __________ |
| A. | 1920 |
| B. | 1924 |
| C. | 1922 |
| D. | 1926 |
| Answer» E. | |
| 39. |
The bio ethanol is subjected to rectification to remove ___________ |
| A. | Sugar |
| B. | Enzymes |
| C. | Yeast |
| D. | Impurities |
| Answer» E. | |
| 40. |
The hydrogen-oxygen fuel cell consists of the _________ inert porous electrodes. |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» C. Three | |
| 41. |
If the traces of water is left in the vegetable oil then ________ is formed. |
| A. | Diesel |
| B. | Bio diesel |
| C. | Petrol |
| D. | Soap |
| Answer» E. | |
| 42. |
Methanol fuel cells are reasonably _________ |
| A. | Stable at all conditions |
| B. | Unstable at all conditions |
| C. | Stable at some conditions |
| D. | Unstable at some conditions |
| Answer» B. Unstable at all conditions | |
| 43. |
The _______ is used as the agricultural fertilizer. |
| A. | Bio ethanol |
| B. | Bio ethane |
| C. | Bio methanol |
| D. | Digestrate |
| Answer» E. | |
| 44. |
The ___________ is used for pumping. |
| A. | Solar energy |
| B. | Tidal energy |
| C. | Wind energy |
| D. | Static energy |
| Answer» B. Tidal energy | |
| 45. |
The production of bio ethanol is by fermenting the _________ and starch components. |
| A. | Acid |
| B. | Milk |
| C. | Sugar |
| D. | Alcohol |
| Answer» D. Alcohol | |
| 46. |
The potential energy is turned into _________ energy in tidal barrage method. |
| A. | kinetic energy |
| B. | Mechanical energy |
| C. | Chemical energy |
| D. | Static energy |
| Answer» C. Chemical energy | |
| 47. |
Methanol possess ___________ inflammability. |
| A. | Lower |
| B. | Higher |
| C. | No |
| D. | Moderate |
| Answer» B. Higher | |
| 48. |
The transesterification is done in presence of methanol, NaOH and__________ |
| A. | KOH |
| B. | Ca(OH)2 |
| C. | Mg(OH)2 |
| D. | Na(OH)2 |
| Answer» B. Ca(OH)2 | |
| 49. |
The vegetable oil __________times larger than the normal diesel molecule. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 50. |
__________ are used for higher flow of water. |
| A. | Francis turbines |
| B. | Pelton turbines |
| C. | Propeller turbines |
| D. | Turgo turbines |
| Answer» B. Pelton turbines | |