What are constituents of brass?
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Which gas is used in refrigeration plants ?
What is the unit of ph?
When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason?? When a cool glass rod is suddenly heated, it cracks. Why?
What is mineral water?
What is Evaporation ?
Difference between an Atom and an Ion ?
However ozone is heavier than oxygen still ozone is up there in sky why?
Explain the term aliquot and diluent?
why bottles of Hazardous chemicals or solvent are available in round shaped only?
Why white clothe are preferred to dark ones in summer ?
Which is the hottest part of a flame ?
What is given off on burning a candle ?