LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.Sc. DEGREE EXAMINATION – CHEMISTRY
SECOND SEMESTER – NOVEMBER 2012
CH 2901 – INSTRUMENTAL METHODS OF CHEMICAL ANALYSIS
Date : 06/11/2012 Dept. No. Max. : 100 Marks
Time : 1:00 – 4:00
PART A
Answer all the questions: 10×2=20 Marks
- Define molarity.
- State Beer Lambert’s law.
- Calculate the pH of 0.01N NaOH.
- What is Buffer solution? Give an example.
- Mention the principle of HPLC.
- State Bragg’s law.
- Give an example for Mc-Lafferty rearrangement.
- Mention the significance of finger print region in IR spectroscopy.
- Define gyroscopic motion.
- How many ml of conc.HCl (density = 1.18 g/ml, 36.0 wt% HCl, MW = 36.5) should be diluted to 1litre to produce a 0.100 M solution?
PART B
Answer any eight questions: 8×5=40 Marks
- What are the requirements of a primary standard?
- How is sulphate determined by turbidometry?
- Discuss the significance of PMT.
- Explain the analysis of riboflavin by spectroflurometry.
- Write a short note on circular dichroism with an example.
- How is ion selective electrode helpful in the analysis of fluoride in drinking water?
- Draw and explain the working principle of a thermal conductivity detector.
- Briefly explain the instrumentation of EPR.
- Explain the fragmentation pattern of decane.
- Discuss the absorption bands of functional groups in IR spectrum.
- Explain the method of single crystal XRD determination.
- Write short notes on detectors used in HPLC.
PART C
Answer any four questions: 4×10=40 Marks
- Draw and explain the working principle of dark beam spectrophotometer.
- Briefly discuss the instrumentation of AAS.
- a) Explain the instrumentation of turbidometry.
- b) How is phosphate determined by turbidometry.
- Draw the block diagram and explain the instrumentation of GC.
- Explain the fragmentation pattern of
- a) benzyl alcohol
- b) pentanoic acid
- Briefly explain the instrumentation of NMR with a block diagram.