Discussion
One of the following waste is not under hazardous one :
Answer: A
Agricultural residue is not hazardous waste.
Hazardous wastes are those that are toxic, corrosive, flammable or reactive and so endanger health or the environment. Crop residues such as straw, husks and stalks are organic and biodegradable; they can be composted or used as fodder or fuel, and their main problem arises only when they are burnt in the open.
Chemical wastes, waste paint (with its solvents and heavy-metal pigments) and electroplating waste (with cyanides and heavy metals such as chromium, nickel and cadmium) are all classed as hazardous.
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