What is wave number?
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What are the electrodes used in the measurement of ph for the determination of pka?
What materials are needed in making glass ?
what is the relation between Total organic carbon and Chemical Oxygen demand?
explain sour gas?
What is the purpose of adding urea?
Explain the Properties of Gases ?
Which expands to the greatest, when heated : silids, liquids or gases ?
Explain about Atomic Weight ?
Why is mercuric chloride added?
Why is ammonia solution added while preparing edta solution?
Why ate the electric fuses used in an electric current ?
what is ppm?how to prepare 75 ppm?