Sources of Energy Test - 11

(1) Fuel burns without smoke is Coke---Coke is a fuel with few impurities and a high carbon content, usually made from coal. It is the solid carbonaceous material derived from destructive distillation of low-ash, low-sulphur bituminous coal. Cokes made from coal are grey, hard, and porous. ... Coke is also used to manufacture water gas
(2) Material suitable for producing biogas is Paper scrap---Biogas means a gas produced by the anaerobic digestion or fermentation of organic matter. The organic matter can be manure, sewage sludge, municipal solid waste, biodegradable waste or any other biodegradable feedstock. Biogas is mainly methane and carbon dioxide
(3) Production of biogas by biomass  is by Anaerobic fermentation--Biogas is a biofuel produced from the anaerobic fermentation of carbohydrates in plant material or waste (eg food peelings or manure) by bacteria. It is mainly composed of methane, with some carbon dioxide and other trace gases.
(4) Manure is Spent slurry---Bio-Gas produced is also used for Power Generation with the help of genset. The Biogas plant Spent Slurry (rich in nutrients than fresh cow dung) is used as Manure for plantation in gaushala and all around it and this slurry is also vermin-composted and marketed

(1) A semiconductor is used to develop electric power is Solar cell---Construction and working of Solar Cell. It essentially consists of a silicon PN junction diode(semiconductor) with a glass window on top surface layer of P material is made extremely thin so, that incident light photon's may easily reach the PN junction. When these photons collide with valence electrons
(2) Indirect harnessing of solar energy is from Hydel power plant----Hydroelectric energy can be defined as a form of hydropower where the motion of running water (kinetic energy) is converted into electricity. The water cycle is driven directly by solar energy. When the sun heats the water in the ocean, some of the water on the surface is vaporized
(3) Can be harnessed 24 hours through out the year is Geothermal energy--Geothermal energy is the heat from the Earth. It's clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma
(4) The temperature in the region of focus is very high in Solar concentrations--Concentrated solar power (also called concentrating solar power, concentrated solar thermal, and CSP) systems generate solar power by using mirrors or lenses to concentrate a large area of sunlight, or solar thermal energy, onto a small area.

(1)Nuclear fusion do not cause any environmental problems--Limitless amount of fuel available, deuterium and tritium easy to produce. Fusion, unlike fission, does not involve a chain reaction, so the process can be stopped eliminating the risk of a meltdown. Fusion does not produce nuclear waste, only the core of the reactor remains radioactive and only for 100 years.
(2) Ammonia is used to run turbine that produces OTEC--First, the pipe flows through a heat exchanger fixed in the hot surface waters of theocean, which makes the ammonia boil and vaporize. The heated ammonia vapor expands and blows through a turbine, which extracts some of its energy, driving agenerator to produce electricity.
(3) Energy available from the oceans is Tidal energy--Tidal energy is produced through the use of tidal energy generators. These large underwater turbines are placed in areas with high tidal movements, and are designed to capture the kinetic motion of the ebbing and surging of ocean tides in order to produce electricity.
(4) Energy due to moving air is Wind energy---Wind energy is a form of solar energy. Wind energy(or wind power) describes the process by which wind(moving air) is used to generate electricity. Wind turbines convert the kinetic energy in the wind into mechanicalpower. A generator can convert mechanical powerinto electricity.

(1)Biomass is made of Fossil fuels--Biomass most often refers to plants or plant-based materials that are not used for food or feed, and are specifically called lignocellulosic biomass. As an energy source, biomass can either be used directly via combustion to produce heat, or indirectly after converting it to various forms of biofuel
(2) Chain reaction in atom bomb is Uncontrolled-A chain reaction is a sequence of reactions where a reactive product or by-product causes additional reactions to take place. In a chain reaction, positive feedback leads to a self-amplifying chain of events.
(3) Fuel used in nuclear power plant is U-235--Nuclear power plants do not burn any fuel. Instead, they use uranium fuel, consisting of solid ceramic pellets, to produce electricity through a process called fission. Watch our interactive graphic on how nuclear fuel is produced, used and stored.
(4) Process by which energy is produced in the sun Nuclear fusion--The Sun is about halfway through its main-sequence stage, during which nuclear fusion reactions in its core fuse hydrogen into helium. Each second, more than four million tonnes of matter are converted into energy within the Sun's core, producing neutrinos and solar radiation.

Because these sources of energy can be easily renewed with minimum effort and money, pollution free and eco friendly

Oxygen itself can not burn but whereas it helps in combustion. Oxygen is an oxidizer which helps in burning. For fuel to burn oxygen helps but where as the others -Methane, Butane, and hydrogen can be used as fuel

LPG is a good fuel with high calorific value, burns with a smokeless flame, does not produce any poisonous gases on combustion and do not cause pollution

Neuclear energy and geothermal energy are not formed due to any action of solar energy

Wood and Natural gas are the primary fuels that are found in nature and can be extracted, captured, cleaned or graded without any sort of enegy conversion or transformation processs.

Coal and natural gas are burned to create the heat that is needed to produce steam. This heat creates creates pressure that turns the turbine