Council for Technical Education and Vocational Training Office of the Controller of Examinations
Sanothimi, Bhaktapur
Regular/Back Exam-2078, Magh/Falgun (Scholarship+Regular)
Program: Diploma in Engineering ALL
Full Marks: 60
Pass Marks: 24
Year/Part: I/II (New + Old Course)
Subject: Chemistry II
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' [6x(5+5)=60]
Attempt All questions.
1. a) What do you mean by hardness of water? How can you remove the temporary hardness of water? [2+3]
1. b) How nitric acid is manufactured by Ostwald's process? Explain with diagram? [5]
2. a) How is ammonia manufactured by Haber's process? Explain what happen when excess ammonia reacts with chlorine. [4+1]
2. b) Define acid rain. Explain oxides of carbon as pollutants. [5]
3. a) Explain contact process of manufacture of nitric acid with labelled diagram. [5]
3. b) How can you prepare hydrochloric acid in laboratory? [5] Explain with
4. a) What do you mean by vital force theory? Why is it failed now? [4+1]
4. b) What is meant by nitrogen fixation? Describe the nitrogen cycle with flow sheet diagram. [4+1]
5. a) What do you mean by alkali metals? Explain the properties of sodium.
5. b) Define allotropes. What are the properties of calcium as alkaline earth metal?
6. a) Explain the properties of methane in brief.
6. b) Write short notes: (Any Two) [2x2.5=5]
i) Homologous series
ii) Functional group
iii) Polymer
iv) Aeromatic compounds
Good Luck!
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