advantages of hydroelectricity and disadvantage of chemistry

Electricity is produced by converting the potential energy of water (from a height) into the kinetic energy of flowing water. Hydroelectricity or hydroelectric power is produced, when large quantities of water stored in dams at a suitable height, are released to fall from a hei..

Renewable sources of energy are produced continuously in nature and are non-depletable. Sources like water, sunlight, air, tidal energy, nuclear energy, geothermal power, are not exhaustible. A non-renewable source of energy gets depleted over a certain period of time, and is not easily replaceabl..

. In bathing, washing, cleaning, sanitation etc. 5. In industries Chemical industries are the greatest consumers of water; for instance, 170 litres of water is needed to manufacture just 1 kg of steel and about 144 tons of water is needed to produce one ton of paper. 6. For hydro-electric..

They give better thrust than solid propellants By propellant flow regulation, thrust can be controlled A mixture of liquid oxygen and liquid hydrogen is one of the most important liquid propellants. Oxygen burns liquid hydrogen to produce heat energy. Liquid propellant examples are alcohols,..

1. As the kiln is heated by burning sulphur, about 33% of sulphur is lost. 2. The process is not continuous. 3. The process is labor intensive i.e. manual labor is needed to collect and stack powdered sulphur, to rebuild up kilns etc. 4. The sulphur so obtained is of low purity and needs to be fur..

a) It prevents the back suction of water into the apparatus. b) It provides a larger surface area for dissolution of hydrogen chloride g..

High calorific value Clean fuel No residue produced No smoke produced Non polluting Economical Can be supplied through pipe lines Burns readily - has a convenient ignition temperatur..

The study of organic compounds becomes easier with the knowledge of homologous series. The study of a vast number of organic compounds become restricted to the study of a few series of homologue..

a) It gives a general idea about the ability of a solute to dissolve in water, at different temperatures. b) The solubility of the solute at any temperature, between the given lowest and highest temperatures, can be more or less accurately read. c) The mass of crystals deposited, when a saturated s..

The presence of carbon dioxide and other gases in the atmosphere produces the greenhouse effect, which keeps the atmosphere warm. The warm atmosphere is very essential for the survival of life on Earth in the following ways: Precipitation of water, formation of clouds, rainfall etc. life in the ..