WBUT 2013 BASIC ENVIRONMENTAL ENGINEERING AND ELEMENTARY BIOLOGY Question Paper

Submitted by vink0108 on Mon, 08/04/2014 - 16:37

CS/B.Tech/NEW/ICE/ECE/EE/EEE/EIE/PWE/BME/SEM-4/CH-401/2013

2013

BASIC ENVIRONMENTAL ENGINEERING AND

ELEMENTARY BIOLOGY

Time Allotted : 3 Hours                              Full Marks : 70

The figures in the margin indicate full marks.

Candidates are required to give their answers in their own words

as far as practicable.

GROUP – A

( Multiple Choice Type Questions )

1. Choose the correct alternatives for any ten of the following :

10x1 = 10

i) Energy flow in the ecosystem is

a) unidirectional

b) cyclic

c) unidirectional or cyclic

d) cannot be said.

ii) The full form of ESP is

a) Electrostatic precipitator

b) Electrostatic producer

c) Electron source precipitator

d) none of these.

iii) Which one of the following is true for a waste water

sample ?

a) BOD > COD

b) COD > BOD

c) BOD = COD

d) BOD = 1 / COD.

iv) Air pollutant which reduces oxygen carrying capacity of

hemoglobin is

a) carbon monoxide

b) ammonia

c) hydrogen sulphide

d) none of these.

v) The cause of eutrophication is

a) increase of pathogens

b) increase of BOD

c) increase of algae's productivity

d) increase of DO.

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