MCQ practice · SSC Chemistry Board questions · Chapter 5: Chemical Bond
In which solvent does the compound of Q and R dissolve?
Think it through first, then pick an option.
- a Kerosene
- b Petrol
- c Water
- d Carbon tetrachloride
Answer and explanation
Correct answer: c Water
CaF₂ is ionic; polar water pulls its ions apart.
Why the other options are wrong
- a Kerosene: R = Ca and Q = F: CaF₂ is ionic, and ionic compounds dissolve in the polar solvent water, not kerosene.
- b Petrol: Petrol is not polar; ionic compounds dissolve in polar water.
- d Carbon tetrachloride: CCl₄ is a non-polar covalent liquid; ionic compounds dissolve in water.
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