Download GTU B.Tech 2020 Winter 7th Sem 2170409 Environmental Biotechnology Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 7th Sem 2170409 Environmental Biotechnology Previous Question Paper

Seat No.: ________
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2170409 Date:28/01/2021
Subject Name:Environmental Biotechnology
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) Explain the term ? phytoremediation.
03

(b) Discuss reforestation through micropropogation.
04

(c) Give an overview of contribution that environment biotechnology can
07
make to society.


Q.2 (a) What is the cleaner technology?
03

(b) Give the meaning of the terms: a) skimming b) lagooning
04

(c) Write the steps showing treatment strategies in Slaughter houses.
07




Q.3 (a) How do membrane bioreactors?
03

(b) Give the meaning of the terms: a) Eutrophication b) aeration.
04

(c) Discuss the process of biogas formation.
07




Q.4 (a) In what ways, microbes improve soil fertility?
03

(b) Write the functions of bioscrubbers.
04

(c) Write a note on: Upflow anaerobic sludge reactor.
07
Q.5 (a) Explain aerobic degradation of wastewater.
03

(b) Comment on the Eco-friendly strategy to check soil borne diseases.
04

(c) Compare wet and dry anaerobic fermentation process operations of waste
07
fractions.



Q.6 (a) How development of stress tolerant plants can restore degraded lands?
03

(b) Write a note on ISO 9000.
04

(c) Represent the sequence of processes how the diffusion of pollutants and
07
microbial degradation occurs in a biological waste gas cleaning system.



Q.7 (a) What is the use of Genetically Engineered Microbes (GEMs) for
03
bioremediation of PAH?

(b) State the role of Casuarina species plants during reforestation.
04

(c) Write a note on naturally occurring plants for phytoremediation.
07



Q.8 (a) What is GMO? Exemplify.
03
(b) Explain eco-friendly strategy to check soil borne diseases.
04
(c) Write a note on Transgenic plants for Phytoremediation.
07
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