Q: Due to improper/indiscriminate disposal of hold 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: 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
Correct Answer: Option (b)
Beryllium is used in circuit board, Hard disk drive, Motherboard, Wiring board and Connectors. So, Option C is wrong.
Mercury is a key part of some modern technologies, including LCD screens, Laptop and computers so Option A is also wrong.
Heptachlor is an organochlorine compound that was used as an insecticide. So, Option D is also wrong.
Hence, option (b) is correct.
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