| Column I | Column II |
| A. Natural active | 1.Immunity developed by heredity |
| B. Artificial passive | 2. From mother to foetus through placenta |
| C. Artificial active | 3. Injection of antiserum to travellers |
| D. Natural passive | 4. Fighting infections naturally |
| 5. Induced by vaccination |
A) A-1 B- 2 C-3 D-5
B) A-4 B-3 C-5 D-2
C) A-4 B-5 C- 2 D-3
D) A-5 B-4 C-3 D-1
Correct Answer: B
Solution :
| Column I | Column II |
| Natural active | Fighting infections naturally |
| Artificial passive | Injection of antiserum to travelers |
| Artificial active | Induced by vaccination |
| Natural passive | From mother to foetus through placenta |
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