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Which of the following reaction is exoth...

Which of the following reaction is exothermic ?

A

`Al_(2)O_(3). 2H_(2)O + 2NaOH to 2NaAlO_(2) + 3H_(2)O`

B

`Al_(2)O_(3).2H_(2)O + Na_(2)CO_(3) to 2NaAlO_(2) + 2H_(2)O + CO_(2)`

C

`Al_(2)O_(3). 2H_(2)O + 3C + N_(2) to 2AlN + 3CO + 2H_(2)O`

D

`2Al_(2)O_(3) + 6F_(2) to 4AlF_(3)+ 3O_(2)`

Text Solution

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The correct Answer is:
B
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