BSc Sem IV 2022 2023 Mar 2023 CHEMISTRY P II Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 A. Fill in the bla (any TWELVE) 12 marks
   • 1) The smallest rep structure is
   • a) Atoms
   • 4) The enzyme which hydrol
   • 5) How does
   • a) -By forming intermediate
   • b) By increasing activation energy
   • d) By changing equilibrium constant
   • a) NO2
   • 7) The cube of symmetry
   • 8) to decrease the visibility
   • a) Photochemical smog
   • b) Acid rain
   • c) gas
   • d) Moisture
   • 9) As the number of oxo-group increases; basicity
   • a) Increases b) Decreases c) Is independent d) Remains constant vcD CHEMISTRY P-II SEM-IV MARKS:100 TIME:3HRS \
   • 11) Higher the be the charge to radius
   • a) More x 12) Higher the v er will be anion in aqueous
   • b) Bas
   • 15) Nitrogen atom in pyrrole
   • 16) The process of the formation of diazonium is called as
   • a) Oxidation
   • b) Substitution
   • c) Reduction Amines are derivatives of
   • a) Phenol
   • b) Ammonia
   • c) Alkane
   • d) Acid
   • 18) Furan has two conjugated double bonds i.e
   • b) electrons
   • c) electrons
   • B. State whether following statement is true or false 3
   • a) Crystal of same substance has same symmetry elements
   • b) Photochemical smog is due to free radical reaction Pyrrole is strong acid in nature
   • a) agent maltose convert glucose into ethyl alcohol
   • d) PAN the rate of the reaction
   • e) convert maltose into glucose
2. Q2 Answer the following: 20 marks
   • b) State the laws of
   • d) Write a note on eneous catalysis
   • f) First order refle (100) plane of NaCl occurs at an angle
3. Q3 Answer the 20 marks
   • a) Explain hydrolysis jum reaction relating pka to pH
   • b) What are oxo-anions? D: ble predominance diagram
   • c) Discuss physical propert of
   • d) What is n stepwise hydrolysis of in aqueous
   • e) Discuss Phosphorus cycle water bodies with suitable diagram
   • f) Write a short note on photochemical smog
4. Q4 Answer the following: (Any 20 marks
   • a) What are heterocyclic compunds? Write name and structure of any four heterocyclic
   • b) Write electronic structure of pyrrole, furan, thiophene and pyridine
   • c) Explain chichibabin reaction
   • d) What is Azo coupling reaction? Give mechanism of Azo coupling reaction
   • e) Explain Hantzsch synthesis of pyridine
   • f) Explain the following
   • (i) Aromatic amines are weaker base than aliphatic amine
   • (ii) Para-nitro aniline is more basic than aniline
5. Q5 Answer the following: (Any Four) 20 marks
   • a) Describe and calculate unit cell of simple cube, face centre, and body centre cube 4: b) What are X-rays? Explain how X-rays are produced Write a short note on acid rain
   • d) Name of oxides and oxo-acids of phosphorus. Discuss their physical property, and common sources
   • e) Explain Gomberg reaction with example
   • f) Explain the aromaticity of furan and pyrrole

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