How many elements have been discovered ?
Is air mixture or compound ?
What is dextro-rotatory and levo-rotatory?
describe the lewis dot structure of Mg2+?
Why is sometimes a succession of echoes heard ?
Explain the process of spontaneous combustion?
What is Catalysis ?
how will you jug that the give organic compound is pure or not ??????
Explain the term aliquot and diluent?
A balloon constructed in Calcutta during July-August was found to show cracks at most wooden joints when received at Ferozepore in December. What is the probable cause ?
why all the concentration of chemical species are measured using water as solvent (for examole 1N NaOH means 40 g of NaOH in one litre of water)eventhough there are so many solvents available?
Explain the Avogadro?s law
What is hydrogenation of oils ?