Consider the following statements:
Statement I: Activated carbon is an effective and attractive material for removing pollutants from effluent streams and for remediating contaminants in various industries.
Statement II: Activated carbon has a large surface area and strong adsorption capacity for heavy metals.
Statement III: Activated carbon can be easily synthesized from carbon-rich environmental wastes.
Which one of the following is correct in respect of the above statements?
(a) Both Statement II and Statement III are correct and both of them explain Statement I
(b) Both Statement II and Statement III are correct but only one of them explains Statement I
(c) Only one of the Statements II and III is correct and that explains Statement I
(d) Neither Statement II nor Statement III is correct
Answer: (a)
Explanation:
Statement I is correct. Activated carbon is widely used in environmental remediation, especially for removing pollutants from industrial effluents, due to its excellent adsorptive properties.
Statement II is correct. The effectiveness of activated carbon arises from its high surface area, microporous structure, and chemical affinity for pollutants, particularly heavy metals.
Statement III is correct. Activated carbon can be economically produced from carbon-rich wastes like agricultural byproducts, making it a sustainable and cost-effective solution for pollution control.
Relevance to Statement I:
Statement II explains why activated carbon is effective: due to its high surface area and adsorption ability.
Statement III explains why it is attractive: due to its ease of production from inexpensive waste materials.
Hence, both statements are correct and together they explain Statement I.
Correct answer: (a)
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