devices used for liquid nitrogen

>(vi) It is used by the chemical, petroleum, and paint industries to provide inactive atmosphere to prevent fires or explosions. (vii) It is used in the industrial preparation of ammonia, which is converted into ammonium salts, nitric acid, urea, calcium cyanamide fertilizers et..

Nitrogen forms nearly 78% of the volume of air. Earlier, the useful significance of nitrogen was not known and it was considered to be inactive. At that time, nitrogen was considered important only because it was known to moderate the processes of respi..

Nitrogen forms nearly 78% of the volume of air. Earlier, the useful significance of nitrogen was not known and it was considered to be inactive. At that time, nitrogen was considered important only because it was known to moderate the processes of respiration..

Nitrogen is used in high temperature thermometers where mercury cannot be used. This is because mercury boils at 356.7 o C and hence cannot be used in such thermometers. A volume of nitrogen is enclosed in a vessel and introduced into the regi..

Conclusion - The two energy bands in solids are valence band and the conduction band. Depending on the gap between the two bands, solids are classified as conductors, insulators and semiconductors. Semiconductors are those whose conductivity can be increased by doping and also by increasing the tem..

Nitrogen is present in the elemental state in the atmosphere to the extent of about 78% by volume. Nitrogen is important for life processes in all living organisms. But, free nitrogen cannot be directly assimilated by the living cells. Therefore, it is desirable to co..

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The sources of oxides of nitrogen are mainly emissions from chemical and metal fabrication plants, agricultural fertilizers, automobile emissions, electric power plants and explosion of thermonuclear weapons in the atmosphere. NO molecule also catalytically converts O 3 to O 2..

Nitrogen is an essential constituent of animal and plant matter as it forms proteins, which are the building blocks of life. The ultimate source of nitrogen is atmospheric nitrogen but neither plants nor animals are capable of assimilating free nitrogen. Thus..

Transmission of Pressure in Liquids - Transmission of pressure in liquid Pascal's Law Pascal's law states that pressure applied to an enclosed liquid, is transmitted equally to every part of the liquid. This can de demonstrated using a glass vessel ..