Safe disposal of mercury is:
Ans is 'a' i.e. Collect carefully and recycle Repeat May 10Elemental mercury exhibits high toxicity via inhalation, skin absorption and ingestion.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 trash. As long as mercury is recycled, it will stay in the recycling loop, going into new products rather than into the environment.
Collect carefully and recycle
Controlled combustion
Treatment with chemicals
Deep burial
Hospital waste, disaster management and occupational health