what is the relation between Total organic carbon and Chemical
Oxygen demand?
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Explain the Valency?
Of what substance are lead pencils made ?
How is the measurement of ph made?
What is kentchin? Is it real? As much info on it as possible.
How can you mark your name on a glass plate by a simple chemical method ?
What is the chemical composition of diamond ?
What is Acids, Bases salts ?
what is the importance of sorbitol?
What are filters? Why are they used?
Explain the Element?
Mention a few advantages of photoelectric colorimetric determination.
What are constituents of brass?