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Question

Which one of the following substances can be used both as a fuel and a reducing agent?

A
Coke
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B
Wood
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C
Methane
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D
Methyl alcohol
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Solution

The correct option is A Coke
Coke can be used both as a fuel and a reducing agent. The combustion of coke (carbon) is highly exothermic and releases a huge amount of energy. Hence, coke is a fuel. Carbon itself is easily oxidized to CO and CO2. C can easily reduce several metal oxides to metal.

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