Can A recover the amount promised to him by B in the following cases :     (5 marks)

(i) A procured B a second wife on B’s promise to pay him Rs. 500/-.

(ii) b has promised to pay A Rs. 1,000/- for his horse, which has died before the contract, but A was ignorant of the death.

(iii) B promised to pay his son A Rs. 10,000/- if he would not marry C.

(iv) b, a minor, promised to pay A Rs. 10,000/- for his car which has been delivered by A to B.