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Ultraviolet Radiations : The ultraviolet (UV) light has higher energy than visible light. Hydrogen lamps, deuterium lamps and other sources of ultra-violet are used for a variety of purposes in physical, chemical and biological laboratories. These applications include spectroscopy. The sterilisation of instruments, the initiation of chemical reactions and the detection of purines and other substances which fluoresce when irradiated with UV light in chromatography and other separation techniques. Ultraviolet sources may be recognised by their intense pale blue illumination, for example mercury vapour lamps and high voltage sparks and arc emitted at the time of welding.
Explain in detail about the Viruses Viruses are the ultramicroscopic parasites which always require a living h ost for their multiplication. Since they are much smaller than ba
Gases : Critical temperature is the A substance which has a critical temperature below 50°C, has a vapour temperature above which pressure of more than 3 bars absolute (highly
conductometry and its biological uses
Types of Diseases As we have indicated above. there are diseases,that a person is born with, for example, a baby may have a defective heart at the time of its birth. Then t
Define Universal Donor and Recipients Based on the above mentioned concept, O group individuals are sometimes considered as 'universal donors ', since they have no antigens an
Cycling of materials in ecosystem: Living organisms require four nutrients in relatively large amounts, these are carbon. oxygen, nitrogen and hydrogen. They also require phosp
what is inside a volcano
State about the Oxidised forms of elements Oxidised forms of elements are more desirable for most common crops grown in acid soils and humid regions while the reduced forms of
Nuclear Reactor: Nuclear fission can be maintaned as a controlled cjiain reaction in a nuclear reactor to produce energy. Fermi had found from experiment that slower moving
Explain the Renal Failure It is the inability of the kidneys to manufacture and excrete urine causing the waste products to accumulate in the blood plasma. If the kidneys do no
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