MCQ
Ultraviolet radiations from sunlight cause a reaction which produces.
- ✓$\mathrm{O}_3$
- B$\mathrm{SO}_2$
- C$\mathrm{CO}$
- D$\mathrm{CH}_4$
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| Column – I | Column $- II$ |
| $(1)$ Study of disease | $(p)$ Transgenic mice |
| $(2)$ Biological products | $(q)$ Testing toxicity of drug |
| $(3)$ Vaccine safety | $(r)$ Rheumatoid arthritis |
| $(4)$ Chemical safety | $(s)\; \alpha - 1$ Antitrypsin |