occurrence of water

Occurrence - Noble gases always occur in free state because of their inert nature. All the noble gases, except radon are present in air in small amounts. The relative abundance of the noble gases in air is = 1%. Helium is present in natural gas up to the extent of 10 per cent. It is also ..

Magnesium sulphate occurs in nature as, Kieserite MgSO 4 .H 2 O Epsomite MgSO 4 .7H 2 O (in certain gypsum deposits). It is also present in certain mineral sprin..

In nature calcium sulphate occurs as Anhydrite, CaSO 4 Gypsum, CaSO 4 .2H 2 O Large quantities of gypsum are available in India in the states of Punjab and Rajasth..

Generally found in land animals which can afford to excrete sufficient volume of water or to concentrate urea in considerable quantity in the urine. It is commonly found in man, whales, seals, desert mammals like kangaroo rats, camels, toads, frogs, cartilagenous fishes, aquatic and semi..

Bacteria are omnipresent, occurring in all environments. They occur in water, in air, in soil, and in or on the bodies of living organisms. There are bacteria which occur in hot springs as well as in extreme cold temperatur..

Hydrogen occurs in free and combined state. It is found trapped in certain rocks and minerals, mixed with natural gas in gold mines and in traces in volcanic gases. The sun and most of the stars are made of free hydrogen. It is the nuclear fusion of hydrogen atoms which produces large amount ..

It is a common method seen in birds, land reptiles, insects, land snails and some land crustaceans. Uric acid is formed from ammonia mostly in the liver and to some extent in the kidneys. The process is highly energy dependant, but is much less toxic than both ammonia and urea and it is almost in..

Noble gases always occur in free state because of their inert nature. All the noble gases, except radon are present in air in small amounts. The relative abundance of the noble gases in air is = 1%. Helium is present in natural gas up to the extent of 10 per cent. It is also present in small ..

Alkali and alkaline Earth metals are the most violently active of all the metals. These occur in the combined form with halide, sulphate, carbonate, silicate ions, etc. and are not found in the free state in nature, as these are readily oxidized. A number of alkali and alkaline Earth metals are fo..

Occurrence of Hydrogen - Hydrogen is the most abundant element in the universe. About half the mass of sun and stars is due to hydrogen. Jupiter and Saturn planets consist mainly of hydrogen. It is common on earth in water, coal, petroleum, clay, animal and vegetable matter that..