| Penicillin was used in |
| a) | First world war | b) | second world war |
| c) | Both (a) and (b) | d) | None of these |
| (b)Penicillin was discovered by Alexander Fleming. It was first anti-bacterial antibiotic, which is the product of Penicillium notatum and P. chrysogenum. It was widely used in second world war. |