What is the purest form of water ?
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What is the colour of diamond, when pure ?
What is protein - according to chemistry?
How is the measurement of ph made?
What is the metal used to extract copper from the solution of copper sulphate?
What is Valency ?
explain sour gas?
Why titration in which hcl and h2so4 is use?
Why is a vessel of water heats more quickly, when heat is applied at the bottom than it is heated at the top?
what is the relation between Total organic carbon and Chemical Oxygen demand?
Why is sometimes a succession of echoes heard ?
What are hard waters?
Why does water boil above 100 o C in mines ?