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?
- 1.Beryllium
- 2.Cadmium
- 3.Chromium
- 4.Heptachlor
- 5.Mercury
- 6.Lead
- 7.Plutonium
Select the correct answer using the code given below:
- 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 & Explanation
Correct answer: B. 1, 2, 3, 5, and 6 only
Electronic waste, commonly known as e-waste, contains several hazardous materials. Components like circuit boards, batteries, and screens often contain heavy metals such as lead, mercury, cadmium, and chromium. Beryllium is also found in some electronic components. Plutonium is a radioactive element primarily used in nuclear reactors and weapons, not typically found in consumer electronics as e-waste. Heptachlor is an organochlorine insecticide, phased out globally due to its persistence and toxicity, and is not a common component of e-waste.
Source: UPSC gs1 2013