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Paper industries release which poisonous substance into water bodies?

ACopper salts
BMercury salts
CArsenic salts
DLead oxides
Answer & Solution
Correct answer: B. Mercury salts
1. Undesirable substances make water polluted. 2. Paper industries use mercury salts. 3. Cholera bacteria are another pollutant. _Source: syllabus Science, Chapter 14, Natural Resources._
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