Advertisements
Advertisements
प्रश्न
Compare and contrast bio-mass and hydro electricity as sources of energy.
उत्तर
Bio-mass and hydro-electricity both are renewable sources of energy. Bio-mass is derived from dead plants and animal wastes. Hence, it is naturally replenished. It is the result of natural processes. Wood, gobargas, etc. are some of the examples of bio-mass.
Hydro-electricity, on the other hand, is obtained from the potential energy stored in water at a height. Energy from it can be produced again and again. It is harnessed from water and obtained from mechanical processes.
APPEARS IN
संबंधित प्रश्न
What is a fuel? Give five examples of fuels.
Arrange the following fuels in the order of decreasing calorific values (keeping the fuel with highest calorific value first):
Biogas, Kerosene, Wood, Petrol, Hydrogen gas, Methane
In the reactor of a nuclear power plant, name the material which is used:
(a) as a moderator
(b) to absorb radiations
(c) in the fuel rods
(d) in the control rods
(e) to carry away heat
An element P has an atomic mass of 239 and an atomic number of 92. It
emits a beta particle forming an element Q. Q can be represented by
In what way are these numbers related to the isotopes of an element?
The nucleus 84X202emits an alpha particle and forms the nucleus Y. Represent this change in the form of an equation.
State charge and mass of β-particle.
Complete the following fission reaction:
\[\ce{_92U^235 _0n^1 -> _aSb^133 + _41Co^b + 4_0n_1 + energy}\]
Write down the values of a and b.
Write the merits of nuclear energy.
Give scientific reason.
It is absolutely necessary to control the fission reaction in nuclear power plants.