Safe disposal of mercury is –: (A) Collect carefully and recycle, (B) Controlled combustion, (C) Treatment with chemicals, (D) Deep burial
Answer is A. All mercury and mercury-containing items should be recycled.
It should never be poured down a drain or sewer, flushed down a toilet, or thrown in the thrash.
As long as mercury is recycled, it will stay in the recycling loop, going into new products rather than into the environment.