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Code No. 7032/E
FACULTY OF SCIENCE
B.Sc. II-Semester (CBCS) Examination, May / June 2018
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Subject : Chemistry
Paper - II
Time : 3 Hours ] Max. Marks: 80
PART - A (5 x 4 = 20 Marks)
(Short Answer Type)
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Note : Answer any FIVE of the following questions.
1. What are interhalogen compounds give the structure of AB5 compounds?
2. Explain the hybridisation and structure XeF2 and XeO3.
3. Explain the mechanism for nitration of Benzene.
4. What is inversion in configuration? Explain with a suitable example.
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5. What is Vant Hoff's factor? What are its values for ideal and non-ideal solute?
6. Define the Law of constancy of interfacial angles.
7. What is super conductivity? Explain zero resistivity.
8. Explain the role of methyl orange as an indicator.
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PART - B (4 x 15 = 60 Marks)
(Essay Answer Type)
Note: Answer all the questions.
9. (a) What are polyhalides? Discuss the geometry of
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(i) ICl2- (ii) ICl4- and (iii) IF2+
OR
(b) Give a comparative study of 3d and 4d Transition series with their 3d analogues.
10. (a) Give the major product for the following reactions and justify with mechanism.
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Code No. 7032/E
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11. (a) Write a short note on :
(i) Steam distillation (ii) Minimum and maximum boiling azeotropic mixtures
OR
(b) (i) Explain the relationship between osmotic pressure and molecular weight of solute.
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(ii) 20 gms of a non-volatile non-electrolytic solute is dissolved in 300ml of water. It shows the osmotic pressure of 8.2 atmospheres at 0°C. Calculate the molar weight of solute.
12. (a) Explain the principle involved in Gravimetric analysis.
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