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Subject :NSO    Class : Class 7

Observe the given reaction sequence carefully.

Acetic acid + Sodium hydrogen carbonate (i)
(i) + Ca(OH)2 (ii) + Water

What could (i) and (ii) be?

(i) (ii)
A CaCO3 CO2
B H2O CaCO3
C CO2 CaCO3
D H2O CO2


Question is incomplete

Ans 1:

Class : Class 8
No, it's not... it is just made quite tricky! the answer is C. It asks two question simultaneously: 1. vinegar plus baking soda evolves which gas? 2. What is formed when CO2 reacts with lime water? Hope u know their answers!! ;)

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