S Block Elements Question 156

Question: Which is quick lime

[EAMCET 1993]

Options:

A) $ Ca{{(OH)}_2} $

B) $ CaO $

C) $ CaCO_3 $

D) $ Ca{{(OH)}_2}+H_2O $

Show Answer

Answer:

Correct Answer: B

Solution:

$ CaO $ - (quick lime) $ Ca{{(OH)}_2} $ - (slaked lime) $ Ca{{(OH)}_2}+H_2O $ - an aqueous suspension of $ Ca{{(OH)}_2} $ in water is called lime water. $ CaCO_3 $ (lime stone).