Due to improper indiscriminate disposal of hold and used computers or their parts which of the follo...........

Environment and Ecology Waste Management

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?

1. Beryllium

2. Cadmium

3. Chromium

4. Heptachlor

5. Mercury

6. Lead

7. Plutonium

Select the correct answer using the codes given below:

This questions was previously asked in

UPSC CSP Previous Year Paper (2013)

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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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Explanation:

Beryllium is used in circuit board, Hard disk drive, Motherboard, Mercury is a key part of some modern technologies, including LCD screens ,Laptop and computers. Plutonium is radioactive and hence not used in day to day computer/electronic items as such Heptachlor is an organochlorine compound that was used as an insecticide. So Option 4 is wrong.

Eliminating Plutonium and Heptachlor from the options, only one option left i.e. Option B

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