Carbon dioxide
Nitrogen
Oxygen
Sulphurdioxide
If the sewage is fully oxidized, the nitrogen is in the form of
If there is one million Mg2+ ions in MgCl2, how many chloride ions are there
If we burn graphite
In 35CI34 and 37CI17 which of the following is false ?
In a nuclear reactor the material use for absorbing neutrons is
In addition to hydrogen, the other abundant element present on Suns surface is
In an atom the order of filling up of the orbitals is governed by
In an oxygen molecule, two atoms are united by
In cold countries alcohol is preferred to mercury as a thermometric liquid because
In drinking water supply, which of the following treatments is not involved
