Solve
Guides
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question
A Assertion is correct but Reason is incorrect. B Both Assertion and Reason are correct and Reason is the correct explanation for Assertion. C Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion. D Assertion is incorrect but Reason is correct.
Open in App
Solution
Verified by Toppr
Fluoride is very electronegative, and thus the bonding forces between Ca2+ and each fluoride anions are very strong, they are tightly held together in the crystal form. A few water molecules do not have enough strength to get in between and dissolve it. Thus, CaF2 is insoluble in water but more ionic, having high lattice energy due to small size of F−.Option (D) is correct.
Was this answer helpful?
3
Similar Questions
Q
1
Assertion :CaF2 is soluble in water but CaI2 is not soluble in water. Reason: CaF2 is more ionic than CaI2. Read the above assertion and reason and choose the correct option regarding it.
View Solution
Q
2
Assertion (A) o-nitrophenol is less soluble in water than the m- and p-isomers.
Reason (R) m and p-nitrophenols exist as associated molecules.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.
View Solution
Q
3
Assertion Reason
If BOD level of water in reservoir is less than 5 ppm it is not polluted.
High biological oxygen demand means low activity of bacteria in water.
View Solution
Q
4
Assertion: The compressibility factor for H2 and He is (1+PbRT)
Reason: The compressibility factor for H2 and He can be derived from Van der Waal's equation.
View Solution
Q
5
Assertion: All the points (1, 0), (-1, 0), (2, 0) and (5, 0) lie on the x – axis. Reason: Equation of the x – axis is y = 0
Now, choose the correct option.
View Solution