The wastes of many factories contain acids. Why is it considered necessary to neutralize them before allowing the wastes to flow into water bodies?

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Solution

Acids are extremely corrosive in nature; therefore, they can cause extensive damage to the living organisms present in water. Also, if the wastes are allowed to flow into the water bodies without treatment, they can pollute the water, making it unfit for drinking. Hence, the wastes should be neutralised by bases before releasing them into water bodies. The base calcium hydroxide ( $Ca {(OH)}_{2}$ ) is widely used to treat wastes, containing acids, from the industries.

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