Download SGBAU BSc 2019 Summer 6th Sem Industrial Chemistry Instrumental Methods Of Chemical Analysis Green Chemistry Question Paper

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B.Sc. (Part-IIT) Semester—YI Examination

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Note :— (1) Question No. 1 is compulsory and carries 8 marks.
(2) Remaining questions carry 12 marks each.

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1. (A) Fill in the blanks :
   1. The small quantity removed from the bulk for analysis is called __________
   2. Precision is defined as the degree of agreement between repeated measurement of __________ quantity.
   3. In all chromatographic techniques, difference in affinity involves the process of either adsorption or __________

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   4. Anion exchangers are cross linked high molecular weight polymers containing __________ groups.

   2

2. (B) Choose the correct alternatives :
   1. Paper chromatography is practically suitable for :
      (a) Ion exchange (b) Partition
      

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      (c) Adsorption (d) Size exclusion
   2. Picric acid is __________ coloured dye.
      (a) Red (b) Blue
      (c) Black (d) Yellow
   3. Which of the following is not the basic component of X-ray fluorescence instrumentation ?
      

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      (a) Goniometer (b) Column
      (c) Collimator (d) Diffracting crystal
   4. In chromatography on stationary phase the substance gets :
      (a) Reabsorbed (b) Absorbed
      (c) Adsorbed (d) None of these

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3. (C) Answer in one sentence :
   1. Define ion exchange capacity.
   2. What is auxochrome ?
   3. Define sampling.

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   4. What is a dye ?

   4

UNIT-I

2. (a) Give an account of sampling techniques of gases. 4
   

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   (b) Explain the terms :
   (i) Mean deviation (ii) Relative standard deviation 4
   (c) Discuss the types of errors. 4
   OR
3. (p) Discuss the technique of volumetric analysis. 4
   

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   (q) Explain the process of sampling of solids. 4
   (r) Discuss :
   (i) Standard deviation
   (ii) Confidence limit. 4

UNIT-II

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4. (a) Discuss the technique of paper chromatography. 4
   (b) Give an account of thin layer chromatography with applications. 4
   (c) Discuss the applications of HPLC. 4
   OR
5. (p) Discuss the applications of chromatography in general. 4
   

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   (q) Define chromatography. Give classification of chromatographic techniques. 4
   (r) Explain the principle and techniques of Gas Liquid Chromatography (GLC). 4

UNIT-ITI

6. (a) Explain the experimental requirements and factors affecting column efficiency. 6
   (b) Discuss the techniques of solvent extraction. 6
   

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   OR
7. (p) Define ion exchange. Discuss the ion exchange capacity of resins. 6
   (q) Describe factors affecting solvent extraction and application of solvent extraction in industries. 6

UNIT-1V

8. (a) Explain the technique of X-ray fluorescence with its applications. 6
   

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   (b) Describe the principle, techniques and application of IR spectroscopy. 6
   OR
9. (p) Give an account of elementary theory of flame photometry. 6
   (q) Draw and explain X-ray fluorescence spectrophotometer. 6

UNIT-V

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10. (a) How are dyes classified as acid and basic dyes ? 4
    (b) Explain the preparation and uses of Indigo dye. 4
    (c) Discuss the manufacture of aurine dye. 4
    OR
11. (p) Discuss crystal violet dye with respect to its preparation and uses. 4
    

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    (q) Explain chromophores and auxochromes. 4
    (r) Describe the preparation of picric acid with uses. 4

UNIT-VI

12. (a) Explain the goals of Green Chemistry. 6
    (b) Discuss the principles of Green Chemistry. 6
    

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    OR
13. (p) Explain the basic components of green chemistry as alternative starting materials and alternative product and target molecules. 6
    (q) Explain the following
    (i) Green solvent
    (ii) Bio catalysis
    

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    (iii) Green fuels. 6

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