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

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Subject Code: 2170409

GUJARAT TECHNOLOGICAL UNIVERSITY

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BE- SEMESTER-VII (NEW) EXAMINATION - WINTER 2020

Subject Name: Environmental Biotechnology

Time: 10:30 AM TO 12:30 PM

Instructions:

1. Attempt any FOUR questions out of EIGHT questions.

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

Q.1

1. (a) Explain the term — phytoremediation. (03 Marks)
2. (b) Discuss reforestation through micropropogation. (04 Marks)

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

Q.2

1. (a) What is the cleaner technology? (03 Marks)
2. (b) Give the meaning of the terms: a) skimming b) lagooning (04 Marks)
3. (c) Write the steps showing treatment strategies in Slaughter houses. (07 Marks)

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Q.3

1. (a) How do membrane bioreactors? (03 Marks)
2. (b) Give the meaning of the terms: a) Eutrophication b) aeration. (04 Marks)
3. (c) Discuss the process of biogas formation. (07 Marks)

Q.4

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1. (a) In what ways, microbes improve soil fertility? (03 Marks)
2. (b) Write the functions of bioscrubbers. (04 Marks)
3. (c) Write a note on: Upflow anaerobic sludge reactor. (07 Marks)

Q.5

1. (a) Explain aerobic degradation of wastewater. (03 Marks)

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2. (b) Comment on the Eco-friendly strategy to check soil borne diseases. (04 Marks)
3. (c) Compare wet and dry anaerobic fermentation process operations of waste fractions. (07 Marks)

Q.6

1. (a) How development of stresstolerant plants can restore degraded lands? (03 Marks)
2. (b) Write a note on ISO 9000. (04 Marks)

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

Q.7

1. (a) What is the use of Genetically Engineered Microbes (GEMs) for bioremediation of PAH? (03 Marks)
2. (b) State the role of Casuarina species plants during reforestation. (04 Marks)
3. (c) Write a note on naturally occurring plants for phytoremediation. (07 Marks)

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Q.8

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

Date: 28/01/2021

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Total Marks: 56

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