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 using the code given below.

Question

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 using the code given below. ​

CollectorBabu · Accepted Answer

Correct Answer: 2 and 3 only ​. Every smelting plant has its own oxygen production unit, to feed in smelting process as well as reduce the exhaust of gases. So, carbon monoxide although produced in the smelting process would get converted to carbon dioxide if the plant is functioning properly and if there are any issues with the oxygen producing unit, the smelting process will slow down. So release of lethal amount of carbon mono oxide sounds like an extreme statement. So, statement 1 is not correct.

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