Karnataka II PUC Chemistry Model Question Paper 2021-22
Name of the Organisation : Department of Post University Education, Karnataka
Exam : II PUC Chemistry Exam
Subject : Chemistry
Document Type : Model Question Paper
Website : https://pue.karnataka.gov.in
Karnataka II PUC Chemistry Model Question Paper
Department of Post University Education, Karnataka Chemistry Model Question Paper II PUC for the year 2021-22.
Related / Similar Question Paper : Karnataka II PUC Physics Model Question Paper 2021-22
Karnataka II PUC Chemistry Questions
PART-A
I. Answer Any Ten Of The Following.
1. What are F-centres?
2. How does the enthalpy change on mixing two volatile liquids to form an ideal solution?
3. Give an example for natural semipermeable membrane.
4. What happens to molar conductivity when one mole of potassium chloride dissolved in one litre is diluted to five litres?
5. Write the energy distribution curve showing temperature dependence of rate of a reaction.
6. Name the shape selective catalyst which converts alcohols directly into gasoline in petroleum industry.
7. What are co-enzymes?
8. Name the method used for concentration of sulphide ores.
9. Complete the reaction: XeF6 + 2H2O → ? + 4HF
10. Which element of 3d series has more number of unpaired electrons in the ground state?
11. Define the term racemisation.
12. Out of ortho & para nitrophenols, which one less volatile compound?
13. Mention the role of dry HCl in the addition of alcohols to carbonyl compounds.
14. Give an example for synthetic biodegradable polyamide copolymer.
15. Name the first popular artificial sweetening agent.
PART-B
II. Answer Any Five Of The Following.
16. Calculate the number of particles present per unit cell in a BCC unit cell.
17. State Henry’s law. Write its mathematical form.
18. Calculate the limiting molar conductivity of calcium chloride (CaCl2). Given that the limiting molar conductivities of Ca2+ and Cl- ions are 119.0Scm2mol-1 and 76.3Scm2mol-1 respectively.
19. Write the symbolic representation of standard hydrogen electrode. Mention its standard electrode potential value (E0).
20. What is the role of coke and lime stone during the extraction of cast iron using blast furnace.
21. Name the noble gas which does not have general noble gas electronic configuration ns2np6. Name the commercial source of this noble gas.
22. Explain Friedel-Crafts reaction with equation by taking chlorobenzene as example.
23. How do you prepare propanamine by Hoffmann’s bromamide degradation reaction? Write the chemical equation.
24. Why soap does not work in hard water?
25. Give an example each for. a. Anti-fertility drug b. Anionic detergents
PART-C
III. Answer Any Five Of The Following.
26. Write the chemical equations involved in the leaching of pure alumina from bauxite ore.
27. With reaction conditions write the balanced chemical equations for the preparation of Nitric acid (HNO3) by Ostwald’s process.
28. a. How is ozonised oxygen prepared in the laboratory? Write the chemical equation. b. Complete the equation: CaO + H2O → ____. (2+1)
29. a. Which is the strongest acid among the hydrogen halides? Give one reason. b. Write the structure of hypochlorous acid (HOCl). (2+1)
30. What are interstitial compounds? Write any two characteristics of interstitial compounds.
31. Write the balanced equation in the manufacture of potassium dichromate from chromite ore.
32. What is Lanthanoid contraction? Mention any two consequences of it.
33. Using Valence Bond Theory (VBT), explain hybridisation, geometry and magnetic property of [Ni(CN)4]2- complex ion. (Z for Ni is 28).
34. Write the geometrical isomeric structures of [Co(NH3)4Cl2]+. What is the coordination number of Cobalt in this complex?
35. a. Give any two postulates of Werner’s theory of co-ordination compound. b. Write the formula of the Potassium hexacyanidoferrate(III)
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