BSc Sem V 2023 2024 Oct 2024 CHEMISTRY ANALYTICAL CHEMISTRY Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q2 any fou following. 7 Ay the potential of the’ system in the titration when:equal of equimolar Fe(II) and solutions are By. 10.0 cm? 0.1 M Fe is titrated with 0.02 M KMn0, at pH Calculate the potential when em? of 0.02 M added What’ are- redox indicators? Explain the use of redox 20 marks
   • D) “What are the factors’ which increase the selectivity of EDTA as titrant. Explain any two
   • E) Explain the following types of EDTA titrations:
   • F) Discuss the theory of metallochromic indicators. What are the requirements of metallochromic indicators?
2. Q3 Attempt any four of the With the a diagram explain the working of hollow cathode 20 marks
   • B) Discuss the principle-of Atomic Absorption Spectroscopy. Explain role of rotating chopper in AAS Explain phosphorescence. Give two applications of phosphorimetry Explain Jablonski diagram of energy levels in a molecule Discuss working, of nephelometry with the help a labelled Explain: - 1) Turbidimetric titrations 2) Phase titrations
3. Q4 Attempt any four of the
   • A) explain the principle of solid phase extraction. Give its advantages any two factors affecting solvent
   • C) used in HPLC .i) isocratic elution gradient elution. three applications of HPLC of HPLC. Discuss UV detector
   • F) ed in HPTLC. Write a note on. fluorimetric
4. Q5 Sele and complete the following statements: for validation of analytical method 1M solution is equivalent used to draw sample from a cylinder filled gas at high-temperature process of rolling and quartering is used for decreasing is used for sampling of particulate solid excellent solvent -for dissolution of. many metal oxides and metals above 5 marks
5. Q5 By State whether true or false: (any five) ? Sulphuric acid.is added to reduce in the titration between equation only at equivalence point in redox 5 marks
   • c) Equivalent point potential is independent of concentrations of and products in titration of Fe(II) against : EDTA does not form:1:1 complex with most of the metal ions
   • f) K'my when oy
   • g) In the titration of against EDTA, concentration of Ca” is
6. Q5 Fill in the blanks with correct alternatives given in the bracket y used for the of 5 marks
   • d) De sorbed radiation is called & nts” are normally carried out at ‘The asure turbidance is known as Molec bond .are. suitable for fluorescence and At measu as a function of of
7. Q5 Sf”) Match (any
   • a) Detection of Powder silica Extraction of nitrate
   • c) _ (iii) Remove impurities from
   • (viii) Easily extracted in water
   • (ix). Easily extracted in organic

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