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Revision set- 01, 1. “ZnO is white when cold, but yellow when hot”, Explain., 2. How many tetrahedral and octahedral voids are there, in closed packing of N spheres?, 3. What is Henry’s law of solubility ?, 4. Explain ideal and non-ideal solution.?, 5. Define Osmotic pressure.?, 6. What do you mean by a Primary cell.?, 7. State and explain Faraday's 2nd law of electrolysis., 8. Differentiate between Molarity and Molality of a, solution.?, 9. Discuss Raoult's law of relative lowering of vapour, pressure.?, 10. What do you mean by unit cell?, 11. What is electrochemical cell? Explain with one, example., 12.What are colligative properties? Write names of, colligative properties., 13. What is Van't Hoff factor?, 14. What do you understand by Depression in Freezing, point ? Obtain a mathematical expression to determine, the molecular weight of a solute with the help of, Depression in Freezing point

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15. What are electrode potential and standard electrode, potential ? Discuss the effect of concentration of a, solution on standard electrode potential, Or, What is semiconductor ? explain with its important types, and example.