The commercial production of sodium carbonate is done by

Zeolite is a silicate of two metal ions $X$ and $Y$. $X$ and $Y$ are respectively

Potassium is kept in

Two metals $A$ and $B$ having similar ionic radii,react with oxygen to give only monoxides and react with nitrogen to give nitrides. Then,$A$ and $B$ respectively are

$Na + Al_2O_3$ $\xrightarrow{\text{High temperature}} X$ $\xrightarrow[\text{water}]{CO_2} Y$; compound $Y$ is

$Al$ utensils should not be cleaned with materials containing washing soda because .............