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Q.

From the below Ellingham diagram, incorrect statement among the following is

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a

at the temperature  above t10c , carbon can reduce Cu2O

b

at the temperature above t30c, carbon can reduce ZnO

c

at t20c, ZnO(s) will boils

d

reduction of Cu2O with carbon requires low temperature when compared with the reduction of ZnO by carbon.

answer is C.

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Detailed Solution

t20C indicates phase transition. An abrupt (or) steep increase inΔG0 is observed. At t20C, ZnO(s) melts.
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