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Which of the following reaction in the b...

Which of the following reaction in the blast furnace is / are endothermic ?

A

`C(s)+O_(2)(g) hArr CO_(2)(g)`

B

`CO_(2)(g)+C(s) hArr 2CO(g)`

C

`CaCO_(3)(s) hArr CaO(s)+CO_(2)(g)`

D

`Fe_(2)O_(3)(s)+3CO(g) hArr 2Fe(l)+3CO_(2)(g)`

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The correct Answer is:
B, C
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