UGC NET Questions (Paper – 1)

Hazardous wastes are defined not simply by volume but by their dangerous properties. Wastes that are toxic, corrosive, flammable or chemically reactive can injure people, damage ecosystems and contaminate air, water or soil. Regulatory definitions often list these characteristics as criteria for special handling and disposal. Therefore, the option that mentions these properties and associated risks correctly describes what makes a waste hazardous.

Option A:
Option A is correct because it reflects how environmental regulations identify wastes that need stringent management. Such wastes may require special treatment, containment and monitoring to prevent accidents and long-term exposure.

Option B:
Option B is incorrect as inert bulky wastes like certain construction materials may pose disposal challenges but are not inherently hazardous in the toxic sense. They usually do not require the same level of control as hazardous wastes.

Option C:
Option C is incorrect because biodegradable kitchen scraps are generally considered non-hazardous municipal solid waste. They can often be composted safely under proper conditions.

Option D:
Option D is incorrect since debris like bricks and stones is typically inert and handled as construction and demolition waste. While it may cause physical space problems, it does not fit the hazardous waste category based on toxicity or reactivity.