UPSC PRELIMS · GEOGRAPHY · COPPER SMELTING POLLUTION

Why is there a concern about copper smelting plants? 1. They may release lethal quantities of carbon monoxide into environment. 2. The copper slag can cause the leaching of some heavy metals into environment. 3. They may release sulphur dioxide as a pollutant. Select the correct answer.

Take a breath. Choose one. Press A–D on your keyboard if you like.

EXPLANATION

Copper smelting can generate sulphur dioxide and copper slag can contribute to heavy-metal leaching; the carbon-monoxide statement is not the correct concern in the official combination.

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