BSc Chemistry SEM IV 2019 20 Oct 2019-20 ATKT CHEMISTRY PAPER II Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 B. State true or false (any three) 3 marks
   • i. Temperature increases the rate of reaction
   • ii. A cube has 23 elements of symmetry
   • iii. Acetylation is carried out by Friedel Crafts reaction
   • iv. Pyridine is basic Degree of hydrolysis increases with increase in charge to radius ratio Vi. Phosphoric acid is mineral acid ‘
2. Q1 C. Match the columns (any five)
   • i. Promoters | a
   • iii. Thiophene c
3. Q2 Attempt the following (any four)
   • A. Write a note on catalytic selectivity
   • B. Define crystallography. Write a note on law of constancy of interfacial angle
   • C. Explain what are promoters and inhibitors with suitable examples
   • D. Explain: i. axis of symmetry and ii. Plane of symmetry
   • E. Write a note on Adsorption theory of catalysis
   • F. The first order reflection maxima from (100), (110) and (111) planes of cubicen occur at respectively. What type of cubic lattice does the crysta:
4. Q3 Attempt the following (any four) 20 marks
   • A. What are the uses of sulphuric acid?
   • B. What are the factors affecting hydration of oxo anions?
   • C. With the help of predominance diagram explain the weakly basic anion and moderately basic anion with suitable examples
   • 1). List the classification of anions based on pKa values with suitable example Write the physical properties of nitric acid What is acid rain? What are its effects on environment? ().4. Attempt the following (any four) (20)
   • A. Describe the Paal Knorr synthesis for preparation of i. thiophene and ii. furan
   • B. Discuss the aromaticity of furan
   • C. Write a note on i. Friedal crafts reaction and ii. Vislmeyer Haack reacticn
   • D. Write a note on i. Hoffmann degradation of amines and ii. Reductive amination
   • E. What are amines? How are they classified?
   • F. How will you distinguish primary, secondary and tertiary amines by acetylation
5. Q5 Attempt the following (any four) 20 marks
   • A. Define : unit cell, crystal lattice, axis of symmetry, center of symmetry and lattice
   • B. Give a brief account of homogeneous and heterogeneous catalysis
   • C. Write a note on photochemical smog
   • D. What are the sources of Sulphur dioxide?
   • E. What are diazonium salts? Give the mechanism of diazodization
   • F. How is aniline converted to i. Bromobenzene and ii. Phenol

Read from the scan above, so a character or two may differ. The scan is the original.