Oxides of .............. and .....can be reduced by heating.

can be reduced to by the reagents.

Oxides of sodium and potassium can be reduced …

Zinc oxide can be reduced only by ...

Which oxide cannot be reduced by H_2 ?

SO_(2) can reduce :

Magnesium oxide can be obtained by heating :-

The oxide of a metal (R ) can be reduced by the metal (P) and metal (R ) can reduce the oxide of metal (Q). Then the decreasing order of the reactivity of metal (P), (Q) and (R ) with oxygen is :

Give reasons for the following : (a) Alumina is dissolved in cryolite for electrolysis instead of being electrolyzed directly. (b) Zinc oxide can be reduced to metal by heating with carbon but Cr_(2)O_(3) cannot be reduced by heating with carbon.

Give appropriate scientific reason for the statement : Zinc oxide can be reduced to zinc by using carbon monoxide, but aluminium oxide cannot be reduced by a reducing agent.

Give appropriate scientific reasons for the following statements: Zinc oxide can be reduced to zinc by using carbon monoxide, but aluminium oxide cannot be reduced by a reducing agent.