28 Which statements about the pollutant carbon monoxide are correct? 1 2 It is a colourless, odourless gas. It is formed by incomplete combustion of natural gas. It reacts with haemoglobin in the blood. 3 A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2
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Answer:
B. 1 and 3 only
Explanation:
colourless, odourless gas.reacts with heamoglobin in the blood
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