Sources of Energy - 1 (Class X)
Covers various renewable energy sources including solar, wind, geothermal, hydropower, tidal, wave, ocean thermal, and biogas energy with their principles, advantages, and applications.
Questions
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 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
What does OTEC stand for?
- Ocean Temperature Energy Conversion
- Ocean Thermal Energy Conversion
- Ocean Tidal Energy Conversion
- Ocean Temperature Energy Collection
Which of the following statements is/are true?
- Wind energy is an environment-friendly source of energy.
- Wind energy is a renewable source of energy.
- Wind turbines need high level of maintenance.
- All of the above
Which of the following is an advantage of geothermal energy?
- Geothermal energy can be obtained from any area of the land.
- Geothermal power plants can be set up in any area.
- The generation of geothermal energy is economical and environment friendly.
- Cold gases are produced from geothermal plants, which can be used elsewhere.
What type of energy transformation takes place in thermal power plants?
- Electrical energy is converted into mechanical energy.
- Heat energy is converted into chemical energy.
- Heat energy is converted into electrical energy.
- Electrical energy is converted into chemical energy.
Sea provides us
- wind energy and water energy
- tidal energy and water energy
- tidal energy and wave energy
- water energy and tidal energy
Directions: Fill the blanks.
Biogas fuel contains (i) _______ gas and is used for (ii) _______.
- 75% oxygen, combustion
- 75% chlorine, lighting
- 75% sulphur, combustion
- 75% methane, lighting
Which of the following is a favourable condition for producing biogas?
- Cow dung and vegetable waste decomposed in the presence of oxygen
- Cow dung and vegetable waste decomposed in the absence of oxygen
- Cow dung and vegetable waste decomposed in the presence of oxygen and natural gas
- Cow dung and vegetable waste decomposed in the presence of oxygen and chlorine
How is tidal energy generated?
- Due to the difference in water levels in sea and rivers
- Due to fast blowing winds
- Due to high and low tides
- Both (1) and (3)
Why is the efficiency of a solar heating device low?
- The sun’s energy is available in condensed form and there is no proper method to store this energy.
- The sun’s energy is available in gaseous form and there is no proper method to store this energy.
- The sun’s energy is available in diffused form and there is no proper method to store this energy.
- The sun’s energy is available in solid form and there is no proper method to store this energy.