Last seen: Sep 30, 2021
Digester chamber.
(i) (a) Safety concerns. (b) Health concerns. (ii) Advantage: From a small amount of nuclear fuel, a large amount of energy is released in a nucle...
(i)(a) There are no energy losses while cooking on the solar cooker as the food gets cooked in a controlled environment whereas cooking on the LPG lea...
(a) Mr Nair: Higher degree of general awareness, helping nature. Nikhil and Neha: Knowledge sharing. • helping nature. • concern for community a...
Nuclear Fission: The process in which a heavy nucleus (such as uranium, plutonium or thorium) is broken into two nearly equal fragments when bombarded...
(a) Tidal energy: The energy produced by the surge of ocean water during high and low tides due to difference in sea-levels is called tidal energy. Th...
(i) It burns without smoke and leave no residue therefore causes no atmospheric pollution. (ii) Its heating capacity is high, i.e. it has high calor...
(i) Because she convinced the people by explaining them the advantage of constructing dam and come with a solution of rehabilitation of displaced peop...
1. Large area is required to build the dam that result rehabilitation of displaced people. 2. Large eco-systems are destroyed when submerged under ...
The purpose of blackening the interior of a solar cooker is that the black surface absorbs more heat radiations of incident solar energy (about 98%) a...
A good fuel is the one which has high calorific value, is non-polluting, is easy to transport and easily available, has moderate ignition tempe...
1. 15 km/h 2. nuclear fission 3. Ocean thermal energy 4. anaerobic degradation 5. methane, carbon dioxide, hydrogen and hydrogen sulphide
CNG does not produce any harmful gases on burning. So atmosphere does not gets polluted.
Various plant materials like the residue after harvesting the crops, vegetable waste and sewage.
Nitrogen and phosphorous.
Anaerobic bacteria.
Starting material for biogas is mainly cow-dung. So, it is also known as gobar gas.
Digester chamber.