Some of the prominent elements found in the e-wastes and their harmful effects are given below:
| Elements | Harmful effects |
| 1. Chromium | Damage of DNA |
| 2. Mercury | Sensory impairment |
| 3. Perfluorooctanoic acid | Lead to spontaneous abortions |
| 4. Lead | Behavioral changes |
How many above give pair is/are correctly matched?
1
Only one pair
2
Only two pairs
3
Only three pairs
4
All four pairs