Karnataka I PUC Chemistry Model Question Paper 2021-22
Name of the Organisation : Department of Post University Education, Karnataka
Exam : I PUC Chemistry Exam
Subject : Chemistry
Document Type : Model Question Paper
Website : https://pue.karnataka.gov.in
Karnataka I PUC Chemistry Model Question Paper
Department of Post University Education, Karnataka Chemistry Model Question Paper I PUC for the year 2021-22.
Related / Similar Question Paper : Karnataka I PUC Physics Model Question Paper 2021-22
Karnataka I PUC Chemistry Questions
PART-A
I. Answer any ten of the following.
1. Name the SI unit of amount of substance.
2. Write the relation between enthalpy change and internal energy change.
3. Which quantum number corresponds to the period number in the modern periodic table?
4. Write the Lewis dot structure of CO molecule.
5. What is the oxidation number of oxygen in peroxides?
6. What is the molecular formula for heavy water?
7. Mention one biological importance of potassium.
8. Which alkaline earth metal gives brick red colour to the flame?
9. What is the shape of Buckminster Fullerene?
10. Name the gas which forms complex carboxy haemoglobin.
11. Which gas is liberated in Dumas Process?
12. Name the first organic compound prepared in laboratory from inorganic compound by F Wohler.
13. Mention the catalyst in Friedel-craft’s alkylation?
14. Write the significance of Biochemical oxygen demand (BOD).
15. What is acid rain?
PART-B
II. Answer any five of the following. Each question carries 2 marks.
16. Mention any two properties of cathode rays?
17. What are exothermic processes? Give an example.
18. What are Transuranium elements? Give an example.
19. The dipole moment of BeF2 is zero. Give reason.
20. What is hydrogen bond? Mention the type of hydrogen bonding involved in o-nitrophenol.
21. What displacement reaction? Give an example.
22. Give reasons: i) Concentrated nitric acid transferred in aluminium container.
ii) Silicon forms p-type semi-conductor.
23. Write the bond line formula and IUPAC name of the compound o-dibromo benzene.
24. Draw the staggered conformation of ethane.
25. Name any two gases causing global warming.
PART-C
III. Answer any five of the following. Each question carries 3 marks.
26. Define Ionization enthalpy. How does Ionization enthalpy vary in a period & down a group in the periodic table?
27. Explain the shape of ammonia molecule using VSEPR theory?
28. What is sigma bond? Why sigma bond is stronger than pi-bond?
29. Write any three postulates of molecular orbital theory.
30. Consider the element Na, F, and I:
i) Identify the element that exhibits only negative oxidation states
ii) Identify the element that exhibits only positive oxidation state
iii) Identify the element that exhibits both positive and negative oxidation state.
31. Mention the three uses of Dihydrogen.
32. How is sodium hydroxide prepared commercially by Kastner-Kellner cell?
33. Give the chemical formula for i) Plaster of paris ii) Lime stone.
34. Write any three anomalous properties of Boron
35. Write any three differences between graphite and diamond.
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