Evaluation Test Class12 Chemistry (SOLUTIONS)

1. Two beakers have equal volume of Solutions. One contains 100g glucose and other 100g Urea. Will their molarities be same or different? Explain.
2. Give characteristic properties of Ideal Solutions.
3. What do you mean by colligative properties? Explain any one of them.
4. What are the application of Depression in freezing point?
5. Explain why exact and sharp melting point is indicator of purity of a compound?
6. A 10% solution of urea( Mol mass=60) is found to be isotonic with a 5% solution of an unknown organic substance. Calculate the molecular mass of the unknown substance.
7. When fruits and vegetables that have dried are placed in water, they slowly swell and return to original form. Why? Would a temperature increase accelerate the process? Explain.
8. Sodium chloride is used to clear snow from roads. Explain.
9. The boiling point increases and freezing point decreases when sodium chloride is added to water. Why?
10. What role does the molecular interaction play in a solution of alcohol and water?
Educator

M.Sc. in Chemistry, B.Ed. & 2 times CTET Qualified (2017 & 2019)

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