Calcium nitrate and calcium carbonate are both ionic compounds.
calcium nitrate mixed with water behaves as an electrolyte
calcium carbonate mixed with water does not behave as an electrolyte
explain, in terms of solubility and movement of ions, this difference in behaviour

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

the answer is true.

i think it's letter a.