Which of the following compounds will form a solution if exposed to air?
A
Na2CO3.10H2O
B
NaNO3
C
CuSO4
D
CaCl2
E
Na2SO4.10H2O
Verified Correct Answer: D.
Chemical Principles & Mechanism
Calcium chloride is a deliquescent substance. It attracts water from the atmosphere and then forms a solution.
Source: Myschool Past Questions Archive (Record #741)