MCQ
Penicillin was discovered by
- AWaksman
- BDubois
- CRobert Koch
- ✓A. Fleming
(d) Alexander Flemming ($1929$) discovered the antibiotic penicillin and showed its effectiveness against many disease producing bacteria.
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| Column $-I$ | Column $-II$ |
| $(A)$ Tuberculosis | $(i)$ Harmless virus |
| $(B)$ Whooping cough | $(ii)$ Inactivated toxin |
| $(C)$ Diphtheria | $(iii)$ Killed bacteria |
| $(D)$ Polio | $(iv)$ Harmless bacteria |