Different between bio mass and hydro …

a) Both Bio-mass and Hydro-Electricity are renewable sources of energy.

b) The use of bio-mass by burning causes air pollution but the use of hydroelectricity do not.

c) Bio-mass gives heat energy which can be used for cooking and heating whereas hydroelectricity can be used for running all types of electrical appliances.

d) Bio-mass energy can be obtained without using any special devices but hydroelectricity can be produced only by establishing hydro-power plants.

Hi

sorry the answer is ...??..Biomass and hydroelectricity are different in many aspects. Hydroelectricity is generated using the kinetic energy from moving water, while the energy from biomass is generated by decomposition of farm waste. Since biomass is composed of organic compounds so energy from biomass results in air pollution. Hydroelectricity, on the other hand, is pollution free.

10 Science Sources of Energy NCERT Exercise Solution What are the limitations of extracting energy from: Wind Answer: Large tract of land is required for establishment of wind farms. They can be established only at those places where wind speed is high enough. Initial cost of establishing a wind farm is very high and the cost of maintenance is also high. Waves Answer: Energy from waves can be harnessed only at selected places; only in coastal areas. Tides Answer: Energy from tides can be harnessed only at selected places; only in coastal areas. Technologies for harnessing energy from waves and tides are still at experimental stage and hence are less efficient and very costly. Prev Source of Energy Non-conventional Energy InText Solution NCERT Solution Quiz Next A solar water heater cannot be used to get hot water on A sunny day A cloudy day A hot day A windy day Answer: (b) A cloudy day Which of the following is not an example of a bio-mass energy source? Wood Gobar-gas Nuclear energy Coal Answer: (c) Nuclear energy Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun’s energy? Geothermal energy Wind energy Nuclear energy Bio-mass Answer: (c) Nuclear Energy Compare and contrast fossil fuels and the Sun as direct sources of energy. Answer: Sun is the direct source of energy, while fossil fuels are formed because of the solar energy stored in them. When green plants prepare food, they convert the solar energy into chemical energy which is stored in the form of biomass. The same biomass gets transferred to the animals. Thus, the energy in the form of biomass which is stored in fossil fuels has come from the sun. Compare and contrast bio-mass and hydroelectricity as sources of energy. Answer: Biomass and hydroelectricity are different in many aspects. Hydroelectricity is generated using the kinetic energy from moving water, while the energy from biomass is generated by decomposition of farm waste. Since biomass is composed of organic compounds so energy from biomass results in air pollution. Hydroelectricity, on the other hand, is pollution free.