The oxide that remains unchanged when heated in hydrogen ...
The oxide that remains unchanged when heated in hydrogen is?
CuO
Fe2O3
PbO2
ZnO
Correct answer is D
Zinc oxide doesn't react to hydrogen gas because the reaction is not spontaneous.
The earthly impurities in iron ore are removed in the blast furnace by the reaction ...
A tertiary alkanol has a molecular formula C4H10O. What is the structural formula of the...
On which of the following is the solubility of a gaseous substance dependent? I. Nature of so...
The following oxides react with both acids and bases to form salts except ...
Sodium hydroxide should be stored in properly closed containers because it? ...
The molecular formula of a common organic laboratory anaesthetic is ...
The synthetic detergents are preferred to soap for laundry using hard water because? ...