From which substance are the dues manufactured ?
Explain the Chemical Manures ?
Which gas is used in bleaching powder.
What is soot or lamp black ?
Explain the Matter?
What are hard waters?
why is their exotherm while addition of reducing agents in reduction reaction?
What is Acidity of a base ?
Why is a halo formed round the moon, when the sky is clear ?
how to do heavy metal test for colour sample?
Which is the best conductor of electricity?
What is equivalent conductivity?
what is the difference between base & nucleophile?