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UPSC Civil Services 2013 Prelims General Studies Paper I

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Question : 4

Total: 100

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 codes given below.

1, 3, 4, 6 and 7 only
1, 2, 3, 5 and 6 only
2, 4, 5 and 7 only
1, 2, 3, 4, 5, 6 and 7

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