Nitrogen is obtained when $NaNO_2$ reacts with

What is formed when ammonia reacts with excess chlorine gas?

The orange solid on heating gives a colourless gas and a green solid which can be reduced to metal by aluminium powder. The orange and the green solids are, respectively

There is very little difference in acid strength in the series $H_3PO_4$,$H_3PO_3$,and $H_3PO_2$ because

When white phosphorus is boiled with a caustic soda solution,it yields $................$.

Which of the following can be used as an anesthetic?