S Block Elements Question 132
Question: Substance which absorbs $ CO_2, $ and violently reacts with $ H_2O $ with sound is :
Options:
A) $ H_2SO_4 $
B) $ CaCO_3 $
C) $ ZnO $
D) $ CaO $
Show Answer
Answer:
Correct Answer: D
Solution:
[d] $ CaO+CO_2\xrightarrow{{}}CaCO_3 $
$ CaO+H_2O\xrightarrow{{}}Ca{{(OH)}_2} $ hissing sound and $ \Delta H=-ve $
BETA
