Which of the following can not evolve more than one gas (vapour) if he – InterviewSolution

1.	Which of the following can not evolve more than one gas (vapour) if heated in dry test tube.
Answer» `naNO_(3)(s)` `MgCO_(3)(s)` `FeSO_(4)(s)` `(NH_(4))_(2)Cr_(2)O_(7)(s)` ANSWER :B

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