Which of the following reacts with a solution of caustic soda upon heating to produce a combustible gas?

Which of the following statements is correct regarding alkali metals?

When a concentrated solution of ammonia is saturated with sodium chloride in the presence of pieces of dry ice,a white cloud forms. This is due to the

When an alkali metal dissolves in liquid ammonia,the solution can acquire different colours. Explain the reasons for this type of colour change.

Chile saltpetre is

Which of the following is the most important factor in making lithium metal the strongest reducing agent?