Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Which of the following can not evolve more than one gas (vapour) if heated in dry test tube.
Text Solution
Verified by ExpertsThe correct answer is:
B
2NaNO 3 (s) 
Na 2 O(s) + N 2 (g) + 
O 2 (g)
MgCO 3 (s) 
MgO(s) + CO 2 (g)
2FeSO 4 (s) 
Fe 2 O 3 (s) + SO 2 (g) + SO 3 (g)
(NH 4 ) 2 Cr 2 O 7 (s) 
N 2 (g) + 2H 2 O(g) + Cr 2 O 3 (s)
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