What are hard waters?
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However ozone is heavier than oxygen still ozone is up there in sky why?
what is ppm?how to prepare 75 ppm?
What is the role of silver sulphate?
What is the reaction that occurs between iodine and sodium thiosulphate?
What is phase transfer catalyst?
Which gas is used, in laboratories etc. for burners ?
Write the structural formula for edta.
What is OOS AND OOT?
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What is Liquation ?
Mention the formula to calculate ph of a solution?
What is a potentiometer titration?
Why mud houses are cooler in summer and warmer in winter ?