JNTU
JNTU B.Tech IV ANALYTICAL INSTRUMENTATION Previous Question Paper (January/February - 2023 - R18)
i) Question paper consists of Part A, Part B.
ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions.
iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
Write various electrodes used in pH meters.
Answer
The primary electrodes used in pH meters are the Glass Electrode (sensing electrode) and the Reference Electrode (typically a Saturated Calomel Electrode or Silver/Silver Chloride electrode). Often, these are combined into a single Combination Electrode.
Write the applications of Dissolved Oxygen analyzers.
Answer
Dissolved Oxygen (DO) analyzers are used in: 1) Monitoring water quality in wastewater treatment plants to ensure aerobic digestion. 2) Boiler feed water analysis to prevent corrosion. 3) Environmental monitoring of lakes and rivers to assess aquatic life health.
List various sources and detectors used in IR Spectrophotometers.
Answer
Sign in to view the complete answer paper.
State and prove Beer- Lambert’s Law.
Answer
Sign in to view the complete answer paper.
Write the basic principle and applications of Gas chromatograph.
Answer
Sign in to view the complete answer paper.
Write the differences between NMR and ESR spectrometers.
Answer
Sign in to view the complete answer paper.
Write the principle of thermal conductivity analyzer.
Answer
Sign in to view the complete answer paper.
Describe the working of Para-magnetic gas analyzers.
Answer
Sign in to view the complete answer paper.
Write the working principle of Thermo gravimetric analyzers.
Answer
Sign in to view the complete answer paper.
Explain the principle and working of Ionization chamber.
Answer
Sign in to view the complete answer paper.
Part B
Draw the neat diagram of Conductivity meter and explain its working. Discuss various probes used in conductivity meters and write their applications.
Answer
Sign in to view the complete answer paper.
Explain the working of dissolved hydrogen analyzer and silica analyzer with help of neat diagrams. Describe the sampling systems used in these analyzers.
Answer
Sign in to view the complete answer paper.
Explain the basic principle and working of sodium analyzer and silica analyzers with help of neat diagram.
Answer
Sign in to view the complete answer paper.
Explain the construction and working of measuring and reference electrodes of PH meter and describe the working of null balance pH meter with a neat sketch.
Answer
Sign in to view the complete answer paper.
Draw the block diagram of double beam UV/visible spectrophotometer and explain the functions of various blocks in detail.
Answer
Sign in to view the complete answer paper.
Explain with a neat sketches the instrumentation associated with IR spectrometers.
Answer
Sign in to view the complete answer paper.
Explain various optical filters and monochromaters used in absorption spectrophotometers.
Answer
Sign in to view the complete answer paper.
Describe the principle and working of FTIR spectrophotometer with the help of a neat diagram.
Answer
Sign in to view the complete answer paper.
Draw the block diagram of a gas chromatograph and explain the working of various blocks in it.
Answer
Sign in to view the complete answer paper.
Explain various column materials and detectors used in high performance liquid chromatography.
Answer
Sign in to view the complete answer paper.
What is NMR spectrophotometer? Explain the instrumentation associated with NMR Spectrophotometer and write its applications.
Answer
Sign in to view the complete answer paper.
Explain the principle and working of Electron Spin Resonance (ESR) spectrometer with help of neat diagram.
Answer
Sign in to view the complete answer paper.
Draw the neat circuit of a basic thermal conductivity gas analyzer and explain its working.
Answer
Sign in to view the complete answer paper.
Explain the working of CO monitoring and NOX analyzer and discuss the sampling systems used in online gas analyzers.
Answer
Sign in to view the complete answer paper.
Describe the working of various sampling systems and detectors used in oxygen analyzers.
Answer
Sign in to view the complete answer paper.
Describe various industrial pollution monitoring systems used in industrial applications.
Answer
Sign in to view the complete answer paper.
Describe in detail with neat sketch the working of Derivative Thermo Gravimetric Analyzers (DTGA).
Answer
Sign in to view the complete answer paper.
Describe the principle and working of GM counter and scintillation counters with help of diagrams.
Answer
Sign in to view the complete answer paper.
Explain with a neat sketch the principle and working of Differential Scanning Calorimeter and mention its applications in detail.
Answer
Sign in to view the complete answer paper.
Explain the construction, and working of Proportional counter, solid state detector used in nuclear radiation methods.
Answer
Sign in to view the complete answer paper.