What are hard waters?
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What is the role of stannous chloride?
Why graphite rod is used in nuclear reactor?
How is arsenic produced?
What is Displacement Reaction .
Which gas is used in bulbus ?
What is the composition of ferroin?
What are the electrodes used in the measurement of ph for the determination of pka?
Fresh form of water is obtained from?
Why is estimation of copper done at 620 nm wave length?
Which metal is used for coating the backs of the mirrors ?
Which gas used for purifying, air in underground enterprises ?
What is soot or lamp black ?