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 A. Fill in the blanks with suitable option (any 12) 12 marks
   • ii. A catalyst the energy of activation
   • iii. For FCC, number of atoms belonging to unit cell are The total number of effective atoms in is 4 Vi. In heterogeneous catalysis catalyst is in phase as reactants
   • a. same c. none of these
   • viii. is called king of chemicals As hydration energy of anions increases basicity of its aqueous solution Xi. As per Bronsted — Lowry concept, acid is a _ donor
   • a. b.electron nuetron
   • xii. Hydrolysis of hydrated cation makes solution
   • a. basic acidic
   • xiii. The pKa values are greater than 14 for cation
   • xv. Thiophene is
   • xvi. Diazotization occurs in presence of
   • xvii. Amines are basic than hydroxides
   • a. more equally MARKS:100 TIME : 3 Hrs =
2. Q1 B. State true or false (any three) 3 marks
   • i. Catalyst increases the rate of reaction
   • ii. Sodium chloride crystallizes in
   • iv. Pyridine is basic
   • v. Degree of hydrolysis decreases with increase in charge to radius ratio
3. Q1 C. Match the columns (any five) 5 marks
   • g. Hantzsch synthesis
4. Q2 Attempt the following (any four) 20 marks
   • A. Write a note on activity of nanoparticles as catalyst
   • B. What are the characteristics of catalyst? J C. Define crystallography. Write a note on law of constancy of interfacial angle
   • D. Explain: i. centre of symmetry and ii. Plane of symmetry
   • E. Derive Michalis- Menten equation for enzyme catalysis
   • F. Define : unit cell, crystal lattice, axis of symmetry, center of symmetry and lattice
5. Q3 Attempt the following (any four) 20 marks
   • A. What are the factors affecting hydration of anions?
   • B. List the classification of anions based on pKb vaiues with suitable example
   • C. With the he!p of predominance diagram explain the weakly basic anion and moderately basic anion with suitable examples
   • D. Write a note on acid rain
   • E. What is photochemical smog? What are its effects ?

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