Prelims Practice
Practice Prelims MCQs from actual UPSC papers. Select an option and check your answer.
Question 1 of 200/0 correct
2013Q29
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