UseFull Links
About
Accessbility
Help
Privacy & Terms
Joseph Priestley
William Ramsay
Rutherford
Neils Bohr
Ozone depletion in the atmosphere is mainly caused by
Ozone layer of atmosphere absorbs:
Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of
Passing a battery current through a solution of brine will produce
Permanent - hardness of water may be removed by addition of
Permanent hardness of water is due to the presence of ?
Petroleum consists of a mixture of
Petroleum is a mixture of
pH scale ranges from
pH value between 6.5-7.5 makes the soil