Energy Sources: Types, Conversion, and Environmental Impact
Explore different energy sources including solar, wind, hydropower, nuclear, and biomass. Learn about energy conversion devices, fuel characteristics, and environmental impacts of various energy technologies.
Questions
Which of the following fuels is the most polluting?
- Diesel
- Coal
- Petrol
- CNG
Which of the following devices is used to convert solar energy to electricity?
- Solar condenser
- Solar cooker
- Solar cell
- Solar inductor
What is the maximum temperature that a solar cooker can attain?
- 70° - 80°C
- 100° - 140°C
- 150° - 160°C
- 50° - 60°C
What happens to wood when it is burnt completely in limited supply of oxygen?
- Charcoal is left behind; water and volatile material get removed.
- Charcoal is left behind; water and non-volatile material get removed.
- Wood is left behind; water and volatile material get removed.
- Charcoal, water and non-volatile material are left behind.
Which of the following types of nutrients does the slurry left behind in a biogas plant contain?
- Nitrogen
- Carbon
- Sulphur
- Potassium
At what temperature difference do ocean thermal plants work?
- 10 K
- 20 K
- 5 K
- 15 K
Winds blow due to
(a) equal heating of landmass and water bodies by solar radiation
(b) difference in temperature in the polar and equatorial regions
(c) unequal heating of landmass and water bodies by solar radiation
- Only (a)
- Both (a) and (b)
- Only (c)
- Both (b) and (c)
Which of the following is/are the negative impact(s) of reservoir-type hydropower plants?
- Large tracts of land get submerged under water.
- A hydropower plant leads to water pollution directly.
- The vegetation, which is submerged, gives rise to methane gas.
- Both (1) and (3)
Which of the following gases is not a greenhouse gas?
- Carbon dioxide
- Methane
- Sulphur dioxide
- Carbon monoxide
Which of the following statements is/are true?
- Uranium is used in fission process.
- Uranium decays into harmful subatomic particles.
- The improper use of uranium and disposal results into environmental pollution.
- All of the above
Which of the following alternative energy sources pollute(s) the environment?
- Geothermal power plant
- Nuclear power plant
- Solar cells
- Both (1) and (3)
Which of the following materials are required to make a solar cooker?
- A glass sheet and convex lens
- A glass sheet, mirror and black box
- A glass sheet, concave lens and black box
- A glass sheet, mirror and plastic box
How does a reservoir-type hydropower plant help the environment?
- Helps in irrigation and in controlling floods
- Helps in controlling rainfall patterns
- Helps in preserving natural habitat
- Helps in stabilising the ecosystem of adjoining areas
Hydrogen bomb is based on __________ reaction and nuclear bomb is based on ________ reaction.
- nuclear fission, nuclear fusion
- nuclear combustion, nuclear fusion
- nuclear fusion, nuclear fission
- nuclear fusion, nuclear combustion
Which of the following is/are the characteristic(s) of a good fuel?
(a) High calorific value
(b) Easy to transport
(c) Very high ignition temperature
- <font face="Arial">Only (a)</font>
- Only (c)
- Both (a) and (c)
- Both (a) and (b)