Download GTU BE/B.Tech 2019 Winter 5th Sem New 2153905 Nanotechnology And Environment Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 5th Sem New 2153905 Nanotechnology And Environment Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? V (New) EXAMINATION ? WINTER 2019
Subject Code: 2153905 Date: 29/11/2019

Subject Name: Nanotechnology and Environment
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

Q.1 (a) What is risk? 03
(b) Explain : Pulmonary effects of CNTs

04
(c) Write down specific applications of nanotechnology that beneficial for
environment.
07

Q.2 (a) What do you mean by Human Health Hazards? 03
(b) Explain Inhalation nanoparticles? 04
(c) In the risk assessment process, explain exposure assessment. 07
OR
(c) Write a short note on Dose-Response Assessment. 07
Q.3 (a) Define: Photo catalyst 03
(b) Explain MSF and MED process for water desalination 04
(c) Write a shot note on working of TiO2 as semiconductor photo
catalyst.
07
OR
Q.3 (a) What is aquaporin membrane? 03
(b) Write a note on Hazards caused by prolonged exposure to arsenic
contaminated soil and water.
04
(c) Explain: organic-inorganic membranes 07
Q.4 (a) List out type of membranes in the vicinity of size. 03
(b) What do mean by arsenic contamination? 04
(c) Explain: desalination of sea water. 07
OR
Q.4 (a) Write note on WHO guidelines for allowed Arsenic content in drinking
water.
03
(b) Explain role of nanoparticles for water treatment. 04
(c) Explain role of various factors which affect the photo catalytic process. 07
Q.5 (a) Write down simple oxidation and reduction process involved in the
treatment of Arsenic.
03
(b) Give your idea about Arsenic treatment using nanoparticles other than
TiO2.
04
(c) Write short note on biologically inspired membranes in the vicinity of
nanotechnology.
07
OR

Q.5 (a) What do you mean by solar disinfection process? 03
(b) Explain removal of arsenic using nanostructured TiO2. 04
(c) Write a note on nanostructured ceramic membrane for waste water
treatment.

07
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