Give the names of formulae of the compounds described below :
(a) A compound of `N, H` and `O` which on heating gives laughing gas.
(b) A compound of `N,H` and `O` which on heating gives nitrogen gas.
( c) A compound of `Ca, P` and `O` which is found in bones.
(d) A compound of `N` and `H` which is used as refrigerant.
( e) A compound of `N` and `H` which behaves like an acid.
(f) A compound of `N` and `H` which is used as a rocket fuel.
(g) A compound of `N, H, S` and `O` which is used as a fertiliser.
(h) A compound of `N, H, S` and `O` which is used for making oximes.
(i) Two neutral oxides of nitrogen.
(j) The oxyacid of phosphorus is used for the preparation of `HBr` and `H I` from bromides and iodides respectively.

Explanation

Ammonium nitrate, `NH_4 NO_3`
(b) Ammonium nitrate, `NH_4 NO_2`
( c) Calcium phosphate, `Ca_3(PO_4)_2`
(d) Ammonia, `NH_3`
( e) Hydrazine acid, `N_3 H`
(f) Hydrazine, `N_2 H_4`
(g) Ammonium sulphate, `(NH_4)_2 SO_4`
(h) Hydroxylamine, `NH_2 OH`
(i) Nitrous oxide, `N_2 O` and nitric oxide, `NO`
(j) Orthophosphoric acid, `H_3 PO_4`.