What is given off on burning a candle ?
How can fresh water be made from salt water ?
Hom many total number of inner transition elements are?
Though the secondary cell can be recharged again and again, still they have a lifetime. Why?
Why is air removed from the electric lamps ?
What are the uses of glacial acetic acid?
Why is starch indicator added towards the end point?
What is the prime constituents of cement?
How are pka and strength of a weak acid related?
Explain the ANS Isotope?
What is soot or lamp black ?
What is the role of silver sulphate?
Why cooling is produced when a wet ?khus khus? screen is hung on the doors and windows ?