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Question

Which of the following oxides can act as a reducing agent?

A
CO
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B
CO2
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C
SnO2
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D
PbO2
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Solution

The correct option is A CO
Carbon monoxide has a lone pair of electrons. When carbon loses electrons, it gets oxidised and hence acts as a reducing agent. CO acts as a strong reducing agent as it easily oxidises to CO2.

Hence, the correct answer is option A.

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