Litharge is chemically

Which one of the following properties is $not$ shown by $NO$?

$P_4O_{10}$ reacts with $HNO_3$ to give:

Among the hydrides $NH_3, PH_3,$ and $BiH_3$,the hydride with the highest boiling point is $X$ and the hydride with the lowest boiling point is $Y$. What are $X$ and $Y$ respectively?

Which of the following is one of the products obtained when calcined phosphate rock is reduced with coke and sand in an electric furnace at $1773 \ K$?

Which of the following oxides of nitrogen is not a common pollutant in the atmosphere?