What are constituents of brass?
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what is ppm?how to prepare 75 ppm?
What is the role of silver sulphate?
Why ate shadows longer at the end of the day ?
What is chemical oxygen demand?
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when we covert any substance into vapour state from solid state, is it ionized or not?
Why has the continuous supply of heat no effect on the rise of temperature after boiling point
What is glacial acetic acid?
What is the reaction that occurring between fas and potassium dichromate?
What forms the basis for colorimetric determination?
why do hard water never produce foam when a soap is dissolved?
What is the Finger Print region