(A) James Watt : Vapour Engine
(B) A. G. Bell : Telephone
(C) J.L. Baird : Television
(D) J. Perkins : Penicillin
Which of the following pairs is not matched?
(A) James Watt : Vapour Engine
(B) A. G. Bell : Telephone
(C) J.L. Baird : Television
(D) J. Perkins : Penicillin