Q: 4 (IAS/2013)
question_subject:
Ecology
question_exam:
IAS
stats:
0,249,166,45,249,30,91
keywords:
{'indiscriminate disposal': [0, 0, 0, 1], 'cadmium': [1, 0, 0, 0], 'plutonium': [0, 1, 0, 0], 'computers': [0, 0, 1, 4], 'mercury': [0, 0, 2, 2], 'chromium': [2, 1, 9, 1], 'beryllium': [0, 0, 0, 1], 'environment': [2, 0, 0, 3], 'heptachlor': [0, 0, 0, 1], 'parts': [6, 2, 8, 19]}
The correct answer is indeed:
1, 2, 3, 5, and 6 only.
Improper or indiscriminate disposal of old and used computers or their parts can release several hazardous substances into the environment as e-waste. The substances commonly found in e-waste include:
1. Beryllium
2. Cadmium
3. Chromium
4. Heptachlor (not typically found in computers)
5. Mercury
6. Lead
Therefore, the correct answer is "1, 2, 3, 5, and 6."