Due to improper/indiscriminate disposal of old and used computers or their parts, which of the following are released into the environment as e-waste?
- Beryllium
- Cadmium
- Chromium
- Heptachlor
- Mercury
- Lead
- Plutonium
Select the correct answer using the codes given below:
[UPSC Civil Services Exam – 2013 Prelims]
(a) 1, 3, 4, 6 and 7 only
(b) 1, 2, 3, 5 and 6 only
(c) 2, 4, 5 and 7 only
(d) 1, 2, 3, 4, 5, 6 and 7
Answer: (b)
Explanation:
The following table presents some of the major elements that can be found in e-waste and their associated negative impacts.
| Elements | Harmful effects |
| Lead | Affects the nervous system leading to behavioural changes, lower IQ, and negative impact on kidneys |
| Mercury | Exposure causes dermatitis, sensory impairment, memory loss, muscle weakness, reduced fertility, etc. |
| Cadmium | Can cause severe lung and kidney damages, and in children, may cause learning and neuromotor defects |
| Chromium | Has carcinogenic properties and may damage DNA |
| Beryllium | Can cause beryllium sensitization, chronic and acute beryllium disease, and lung cancer |
| PVC | Chlorine bioaccumulation can lead to air, water, and soil pollution, reproductive and developmental health effects |
| PFOA | Has severe impact on pregnant women leading to spontaneous abortions, stillbirth, low birth weight, etc. |
| Sulphur | Can damage the heart, kidneys, and liver |
| BFRs | May lead to thyroid problems, liver problems, and improper development of the nervous system |
