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JEE Main levelSingle correct optionDifficulty 2 of 3mt201

The lines for $2 C + O X_{2} 2 CO$ and $2 CO + O X_{2} 2 CO X_{2}$ intersect at about 983 K in the Ellingham diagram. Which statement is correct?

ABelow 983 K, CO is a better reducing agent than carbon
BAbove 983 K, CO is a better reducing agent than carbon
CCarbon and CO are equally effective at all temperatures
DCO cannot reduce any oxide

Answer: A

Below the crossover, the

CO CO X_{2}

line lies below the

C CO

line, so CO takes oxygen more readily. Above 983 K the C-to-CO line is lower, so carbon is the better reductant.

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