Download GTU BE/B.Tech 2018 Winter 5th Sem New 2151302 Advanced Environmental Instrumentation Question Paper

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Subject Code: 2151302
Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-V (NEW) EXAMINATION - WINTER 2018
Subject Name: Advanced Environmental Instrumentation

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Time: 10:30 AM TO 01:00 PM
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks

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Q.1 (a) Explain the following terms: 03
    i. Coefficient of variation ii. Spectroscopy iii. Precision iv. Mean
    v. Conductivity vi. Chromatography.
(b) Differentiate between Visual and Instrumental method of turbidity 07

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    measurement.
(c) Differentiate between UV — Visible Spectrophotometer and Atomic 03
    Absorption Spectrophotometer.

Q.2 (a) Draw the figure of pH electrode and explain its working principle 04

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(b) Explain the working principle of conductivity meter with neat sketch. 07
(c) With the help of neat sketch explain components of Ion Selective electrode. 07

OR

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Q.2 (a) What is polarography? Explain the online DO meter with neat sketch. 03
(b) Highlight the application of Gas Chromatography 04
(c) Describe the Double Beam UV — Visible Spectrophotometer with neat 07
    sketch.

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Q.3 (a) Explain the principle of Nephelometer. With the help of neat sketch explain 04
    its components.
(b) OR 07
(c) Explain the Principle of UV — Visible Spectroscopy with it’s applications in 03
    Environmental Engineering.

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Q.4 (a) Explain the Lambert and Beer’s Law in brief. 04
(b) Enlist the types of Detectors used in Spectroscopy. Explain Flame 07
    Ionization Detector in detail.
(c) Discuss the use of Spectroscopy in Environmental Engineering Field. 03

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Q.4 (a) State the Principle of IR Spectroscopy with its instrumentation and neat 04
    sketch.
(b) Describe the Principle and Instrumentation of Gas Chromatograph with neat 07
    sketch

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OR

Q.4 (a) What is Chromatography? Give classification of the chromatographic 03
    methods.

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(b) Write down the application of Ion selective electrode 04
(c) Explain the components and working of Atomic Absorption Spectrometer in 07
    detail.

Date: 20/11/2018

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Total Marks: 70

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Q.5 (a) Explain the oxidation method used in closed loop type of TOC analyzer. 03
(b) Highlight the application of each type of TOC analyzer 04
(c) Explain the principle on which TOC analyzer works. Enlist different types of 07
    flow through TOC analyzer and draw a sketch. Explain different oxidation
    methods used in them.

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OR

Q.5 (a) Differentiate between Accuracy and precision with example 03
(b) Differentiate between Determinate and Indeterminate Error with example 04

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(c) The following are results of absorbance of 30 sample with same absorbance 07
    obtained using spectrophotometer:
    0.441, 0.445, 0.447, 0.449, 0.450, 0.450, 0.451, 0.452, 0.453, 0.453, 0.454,
    0.455, 0.456, 0.456, 0.457, 0.458, 0.458, 0.459, 0.459, 0.460, 0.461, 0.461,
    0.466, 0.468, 0.470, 0.472, 0.475, 0.455, 0.458, 0.461

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    Draw the frequency distribution polygon for above data.

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