MCQ
$\ce{AIDS}$ is a deadly disease which is caused by :
- AA protozoan.
- BA fungus.
- CA bacterium.
- ✓A virus.
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| Carries blood to body | Carries blood to lungs | Carries blood from lungs | Carries blood from body | |
| $(a)$ | $1$ | $2$ | $3$ | $4$ |
| $(b)$ | $1$ | $3$ | $4$ | $2$ |
| $(c)$ | $2$ | $4$ | $3$ | $1$ |
| $(d)$ | $3$ | $1$ | $4$ | $2$ |
