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Carbon cannot be used in the reduction o...

Carbon cannot be used in the reduction of `Al_2 O_3` because

A

it is an expensive proposition

B

the enthalpy of formation of `CO_2` is more than that of` Al_2 O_3`

C

pure carbon is not easily available

D

the enthalpy of formation of `Al_2 O_3`

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The correct Answer is:
D
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AAKASH SERIES-PRINCIPLES OF METALLURGY-PRACTICE EXERCISE
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