BSc Chemistry SEM V 2016 17 2016-17 Analytical Chemistry Question Paper - Mumbai University | munotes

Questions asked in this paper

• (2) Figures to the right indicate full marks

1. Q2 Answer @ny three of the following :
   • A) following any five applications of the following Dew a neat labelled diagram of atypical HPLC unit and exp Isocratic and gradient elution Function of precolumn in the of paper tare the any two types pumps any four in Explain the and matographic techniques’ in HPLC giving the classification of chro Define R, yalue. d, giving suitable V based on phases g Answer any three photometer and explain the function Draw by th of each component. ar weight of ecules by the
   • B) Discuss: i) Explain the principle single beam and explain its use in determination of concentration t
   • E) Give any five applications of flame p
   • F) Explain the factors affecting
2. Q4 Attempt any three of the
   • A) 10.0cm? of 0.1M Fe is titrated with 0.1M Ce in acidic the half the point, and ii) on addition of cet3
   • B) redox How does diphenylaminé behave as an indicator in redox titrations is the function of H,PO, in such titrations?
   • C) Whatare the light dispersing devices used in UV-Visible spectrophotometers? any of these devices, in brief
   • F) e principle of solid phase extraction. Give any three advantages of in the blanks : When all the observations record i A corded are with equ 4 hy then the value of chi-square is qual frequency without any S n Q-test, Q.,, is obtained by dividin measurment . and its nei difference between the doubtful ent by . of the set When the two variables x correlation coefficient is A stated amount of material to from sampling unit is called State true or false : Split barrel sampler is used to collect samples of compact solids The peak of normal error indic a The a used by statisticians to determine relationship variab and independent variables is of increments a sub-sample Fill in the blanks :- 4 In paper chromotography . value is used to separated components Densitometer is used as a . in HPTLC, ) In HPLC, separation is caried out at ) Thickness of Stationary phase in than that in TLC ) State true or false :- 4 ) TLC separation is based on adso ) index detectors are highly temperature sensitive In HPLC columns are ) UV - visible detector in on absorption of UV or visible radiation ) Fill in the blanks :- 4 ) An expression of distribution equation is ) the steady light from hollow cathode lamp is converted into pulsating Phosporimettic experiments are normally caried out at . tempareture In the detector is usually, but not necessarily, placed at angle the incident radiation atomiser is also called graphite fumace serves as a radiation source for different elements in AAS Fluorescence is a delayed matic radiation is not necessary ur change When the dec eases with nC i on Pp nsible for the absorption

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