S Block Elements Question 140
Question: A substance absorbs $ CO_2 $ and violently reacts with water. That substance is
[AFMC 1988]
Options:
A) $ CaCO_3 $
B) $ CaO $
C) $ H_2SO_4 $
D) $ ZnO $
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Answer:
Correct Answer: B
Solution:
$ CaO+CO_2\to CaCO_3 $
$ CaO+H_2O\to Ca{{(OH)}_2} $