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Which of the following lower atmosphere pollutant gases is produced directly by the smelting of mineral ores? (A) Carbon monoxide (B) Nitrogen dioxide (C) Ozone (D) Sulfur dioxide - HSC - SSCE Chemistry - Question 9 - 2008 - Paper 1
Question 9
Which of the following lower atmosphere pollutant gases is produced directly by the smelting of mineral ores? (A) Carbon monoxide (B) Nitrogen dioxide (C) Ozone ... show full transcript
Worked Solution & Example Answer:Which of the following lower atmosphere pollutant gases is produced directly by the smelting of mineral ores? (A) Carbon monoxide (B) Nitrogen dioxide (C) Ozone (D) Sulfur dioxide - HSC - SSCE Chemistry - Question 9 - 2008 - Paper 1
Step 1
Identify the pollutant gases produced by smelting mineral ores
Answer
The process of smelting mineral ores involves the heating of ores to extract metals. During this process, several gases can be released, but the key ones to consider for this question are carbon monoxide and sulfur dioxide.
Step 2
Evaluate each option
Answer
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Carbon monoxide (A): This gas is a common byproduct of the smelting process when carbon sources are used to reduce metal ores.
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Nitrogen dioxide (B): Generally produced from combustion processes rather than directly from smelting.
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Ozone (C): A secondary pollutant that forms through photochemical reactions in the atmosphere, not directly from smelting.
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Sulfur dioxide (D): This gas is produced when sulfur-containing ores are smelted, making it a direct product of the smelting process.
Step 3