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GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-V (NEW) EXAMINATION - WINTER 2020
Subject Code:3153905 Date:22/01/2021
Subject Name:Nanotechnology And Environment
Time:10:30 AM TO 12:30 PM Total Marks: 56
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Instructions:
- Attempt any FOUR questions out of EIGHT questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
MARKS
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Q.1 (a) Define: Catalysts 03
(b) Explain: Adverse effect associated with Arsenic 04
(c) Explain possible risk of nanomaterials in the vicinity of environment and human health. 07
Q.2 (a) Define: Toxicity 03
(b) Describe : Experimental assessment of the toxicity of C60 04
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(c) Write a short note TiO2 as a semiconductor Photo catalyst 07
Q.3 (a) Define: Photocatalytic degradation 03
(b) Explain with necessary example photocatalytic Activity. 04
(c) Write a short note on hazardous effects of NMs on human health. 07
Q.4 (a) Define: Microbiotest 03
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(b) Explain: Reaction variables associated with photo catalyst. 04
(c) Write a short note on impacts of C60 on microbial degradation of organic matter in sediment slurries. 07
Q.5 (a) What do mean by nano membranes? 03
(b) Explain : molecular modeling of interaction of carbon-based MN with cell membranes 04
(c) Write a short note on photocatalytic degradation of specific waterborne pollutants. 07
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Q.6 (a) Define: Desalination process 03
(b) Write short note on toxicity associated with environmental contaminants. 04
(c) Explain use of nanostructured TiO2 for treatment of Arsenic. 07
Q.7 (a) Define: Molecular Modeling 03
(b) Write short note on potential toxicity of Fullerenes. 04
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(c) Write a short note on model associated with assessment of MNs’ across cell membranes 07
Q.8 (a) What do mean by risk management? 03
(b) Explain : Intrinsic photocatalytic activity 04
(c) Write a short note nano membranes in seawater desalination. 07
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