Council for Technical Education and Vocational Training
Office of the Controller of Examinations
Sonothimi Bhaktapur
Regular/Back Exam-2078, Magh/Phagun
Program: Health All
Full Marks: 64
Pass Marks: 25.6
Year/Part: 1 Year (2004, Old)
Subject: Chemistry
Time: 3 hrs
Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.
Group A
Attempt any THIRTEEN questions. [13×2=26]
1. What are the significance of symbol and formula?
2. State modern periodic law.
3. Explain two types of reactions with examples.
4. What are the limitations of chemical equations?
5. What do you mean by electronegativity and ionization potential?
6. Differentiate between crystalline and amorphous solid.
7. What is antacid? Give examples.
8. What do you mean by electrolytes and non-electrolytes?
9. Write down the functions of protein.
10. Write down the configuration of Cr and Cu.
11. What do you mean by hard and soft water?
12. Differentiate between ionic and covalent bond.
13. Find the oxidation number of
a. S in H2SO4
b. Cr in K2Cr2O7
14. Define isotopes and isobars.
15. Give the IUPAC name of following:
a. CH2-CH2-CH2-COOH
b. H
|
CH3-C -OH
|
COOH
16. Define buffer solution.
17. Define the terms:
a. Coagulation
b. Dialysis
18. Write short note on Markonikov's rule.
Group B [5x4=20]
Attempt any FIVE questions.
19. What is ideal gas? Derive PV=nRT.
20. Describe lab preparation of CO. Why is it toxic?
21. Describe lab preparation of nitrobenzene.
22. What is hard water? How can you remove permanent hardness of water by washing soda process?
23. How can you prepare O₂ from KClO, in laboratory? Explain its physical and chemical properties.
24. Write short notes on:
a. Conjugate pairs of acid and base
b. Explain about acid rain.
25. "Oxidation reduction reaction occurs simultaneously." Justify with example.
Group C [2x9-18]
Attempt any TWO questions.
26. Write short notes on:
a. Postulates of Bohr's Atomic Model
b. Faraday's Second Law of Electrolysis
c. Covalent and Electrovalent Bond with Examples
27. Show your familiarity with
a. Greenhouse Effect
b. Vital Force Theory
c. Homologous Series
28. Describe the preparation, properties and use of benzene.
29. Write short notes on:
a. Functional Group
b. Alkyl Halide
c. Water Pollutants
Good Luck!
