MCQ
What is the difference in oral contraceptives and hormonal implants?
- AThey differ in their sites of implantation
- BThey differ in their duration of action
- ✓Both $(a)$ and $(b)$
- DNone of the above
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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 |
