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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.
in a reaction 5.3g of sodium carbonate reacted with 6g of ethanic acid. theproducts were 2.2 g of carbon dioxide , 0.9g water and 8.2 g of sodium ethanoate, show that these observa
characteristics ot coelenterata
Objectives : After studying this unit, you should be able to 1. explain the need for safety and health regulations using an example, 2. describe the use of National Buildi
Explain Immunoglobulin A - Classification of Antibodies Present in secretions, protects mucosal surfaces. It is found in tears, saliva, and gastrointestinal secretion, respirat
A) thickness of the respiratory membrane B) gas concentration gradients C) decrease in pulmonary ventilation D) lung surface area E) no exceptions
Origin of life on the earth: Man has always wondered how he came into existence, who created him, and why he was created. Curiosity in this connection has been so strong that
Studying the main parts of a flower Examine specimens of large simple flowers such as "tulips or lilies". Count the stamens & observe how they well arranged about the central p
Carbon atoms of fatty acids are numbered from carboxyl carbon. Various conventions are used to indicate the position of double bonds in the fatty acid molecules. Like,
INTRODUCTION : This exercise is based on here 'Laws and Regulations' of this course. What are we going to do in this exercise? - This might be the question arising in your mind. I
Steroids are of many types . These are given below: a) Sterols : Cholesterol, ergosterol. b) Bile acids : Glycocholic acid, taurocholic acid. c) Hormones : Testoste
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