Download GTU B.Tech 2020 Winter 5th Sem 3153905 Nanotechnology And Environment Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 5th Sem 3153905 Nanotechnology And Environment Previous Question Paper

Seat No.: ________
Enrolment No.___________
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
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.


MARKS
Q.1 (a) Define: Catalysts
03

(b) Explain: Adverse effect associated with Arsenic
04

(c) Explain possible risk of nanomaterials in the vicinity of
07
environment and human health.


Q.2 (a) Define: Toxicity
03

(b) Describe : Experimental assessment of the toxicity of C60
04

(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
07
health.




Q.4 (a) Define: Microbiotest
03

(b) Explain: Reaction variables associated with photo
04
catalyst.

(c) Write a short note on impacts of C60 on microbial
07
degradation of organic matter in sediment slurries.
Q.5 (a) What do mean by nano membranes?
03

(b) Explain : molecular modeling of interaction of carbon-
04
based MN with cell membranes

(c) Write a short note on photocatalytic degradation of
07
specific waterborne pollutants.



Q.6 (a) Define : Desalination process
03

(b) Write short note on toxicity associated with environmental
04
contaminants.

(c) Explain use of nanostructured TiO2 for treatment of
07
Arsenic.
Q.7 (a) Define: Molecular Modeling
03

(b) Write short note on potential toxicity of Fullerenes.
04

(c) Write a short note on model associated with assessment of
07
MNs' across cell membranes



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
07
desalination.

1

---