Download GTU BE/B.Tech 2018 Winter 5th Sem New 2153905 Nanotechnology And Environment Question Paper

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Subject Code: 2153905

GUJARAT TECHNOLOGICAL UNIVERSITY

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Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1

1. (a) Define Risk and categorize it. [03]
2. (b) Differentiate between direct risk and indirect risk. [04]

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3. (c) Justify the following statement [07]
   1. (1) Nanotechnology could make battery recycling more effective
   2. (2) Nanomaterials can be used as treatment of waste cleanup in water.
   3. (3) Nanotechnology based solutions for oil spills.

Q.2

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1. (a) Define ultra-filtrations and explain how it is different from normal filtration. [03]
2. (b) Explain the working of Reverse Osmosis [04]
3. (c) Write a note on nanostructured ceramic membrane for waste water treatment. [07]

   OR

4. (c) What is Human Health Hazards? And what are its preventive measures? [07]

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Q.3

1. (a) Justify how pH governs the photo catalytic effect. [03]
2. (b) Explain the working mechanism of reactive catalytic ceramic membrane. [04]
3. (c) What is pulmonary system and what is the effect of CNT on it. [07]

   OR

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Q.3

1. (a) What effect will be seen when insoluble solids are inhaled by human body? [03]
2. (b) Explain the practical example of photo catalytic mechanism. [04]
3. (c) Write a note on how TiO₂ Nanoparticles help to works for water purification process. [07]

Q.4

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1. (a) Explain the damage done by arsenic impurity observed in water. [03]
2. (b) Explain the chemistry how a catalyst is degraded. [04]
3. (c) Write a note on factors which affect the photo catalytic process. [07]

   OR

Q.4

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1. (a) Explain the dose response evolution. [03]
2. (b) What is aquaporin and explain its working mechanism. [04]
3. (c) Give various applications of Inorganic and Organic membranes. [07]

Q.5

1. (a) Classify the membranes based on the size. [03]

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2. (b) Explain how Nano membranes help domestic water treatment. [04]
3. (c) Define oxidative stress and how justify how it is related to the pulmonary inflammation? [07]

   OR

Q.5

1. (a) Define Intrinsic and Extrinsic factors. [03]

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2. (b) Write a note on photo catalytic degradation of specific waterborne pollutants. [04]
3. (c) Write a short on methods by which hazards can be predicted and its preventive measures. [07]

Date: 04/12/2018
Total Marks: 70

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