Which of the following batteries are responsible for direct environmental hazard?
Which of the following batteries are responsible for direct environmental hazard?
The correct options are
A Mercury cell
B Alkaline dry cell
C Ni−Cd battery
Alkaline batteries are prone to leaking potassium hydroxide, a caustic agent that can cause respiratory, eye and skin irritation. Potassium, if it leaks, can cause severe chemical burns thereby affecting the eyes and skin.
Mercury can even be absorbed through the skin. These harmful substances permeate into the soil, groundwater and surface water through landfills and also release toxins into the air when they are burnt in municipal waste combustors.
For humans, both lead and cadmium can be taken only by ingestion or inhalation. Moreover, cadmium is easily taken up by plant roots and accumulates in fruits, vegetables and grass. The impure water and plants in turn are consumed by animals and human beings, who then fall prey to a host of ill-effects.
Since Li-ion batteries contain less of toxic metals than other types of batteries which may contain lead or cadmium, they are generally categorized as non-hazardous waste.
A, B and C are correct options.
A Mercury cell
B Alkaline dry cell
C Ni−Cd battery
Alkaline batteries are prone to leaking potassium hydroxide, a caustic agent that can cause respiratory, eye and skin irritation. Potassium, if it leaks, can cause severe chemical burns thereby affecting the eyes and skin.
Mercury can even be absorbed through the skin. These harmful substances permeate into the soil, groundwater and surface water through landfills and also release toxins into the air when they are burnt in municipal waste combustors.
For humans, both lead and cadmium can be taken only by ingestion or inhalation. Moreover, cadmium is easily taken up by plant roots and accumulates in fruits, vegetables and grass. The impure water and plants in turn are consumed by animals and human beings, who then fall prey to a host of ill-effects.
Since Li-ion batteries contain less of toxic metals than other types of batteries which may contain lead or cadmium, they are generally categorized as non-hazardous waste.
A, B and C are correct options.
