lead
chromium
zinc
tin
Among the various allotropes of carbon
The group of metals Fe, Co, Ni may best called as
Heavy water is
The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
The element common to all acids is
Non stick cooking utensils are coated with
Monazite is an ore of
Carbon diamond and graphite are together called
Potassium nitrate is used in
Permanent hardness of water may be removed by the addition of
