Due to improper/indiscriminate disposal of hold and used com

| M: +2.00/-0.67

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:

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1. ????????

2. ???????

3. ????????

4. ???????????

5. ???

6. ????

7. ??????????

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[Ecology and Environment 2011-16 New Without Errors,UPSC IAS Prelims 2013]

A 1, 3, 4, 6 and 7 only

केवल 1, 3, 4, 6 और 7

B 1, 2, 3, 5 and 6 only

केवल 1, 2, 3, 5 और 6

C 2, 4, 5 and 7 only

2, 4, 5 और 7 ही

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

1, 2, 3, 4, 5, 6 और 7

EXPLANATION

Beryllium is used in circuit board, Hard disk drive, Motherboard, Wiring board a...

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