​Damaged fluorescent tubes or CFLs need to be disposed off safely because:​

Correct option is D

The correct answer is It contains mercury vapour.

·       Mercury vapour:
○ Fluorescent tubes and Compact Fluorescent Lamps (CFLs) contain small amounts of mercury vapor, which is toxic to humans and the environment.
○ Exposure to mercury can lead to serious health issues, including neurological damage, especially in pregnant women, infants, and young children.
○ Safe disposal and proper recycling are necessary to prevent mercury from contaminating the air, water, and soil.
○ Recycling centers have the means to safely handle and recover mercury, as well as other materials, from used fluorescent lamps.

Additional Information

·       Oxygen vapour:
○ Oxygen is a non-toxic gas and does not present environmental or health risks in the context of light bulbs.
○ Therefore, its presence would not necessitate special disposal procedures.

·       Nitrogen vapour:
○ Nitrogen is an inert gas and poses no significant health or environmental risks.
○ It is commonly found in the atmosphere and does not require special handling for disposal.

·       Carbon dioxide vapour:
○ While carbon dioxide is a greenhouse gas contributing to climate change, it is not a hazardous waste that would necessitate special disposal when found in small, contained quantities like those in light bulbs.