VTU First Year Engineering (C Cycle) (Semester 1)
Environmental Studies
May 2014
Total marks: --
Total time: --
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 Amount of carbon di oxide present in atmospheric air is
a) 21%
b) 0.383%
c) 78%
1 M

2 Estuary means
a) Rich in nutrients
b) End point of a river
c) Meeting place of a river an sea
d) Treatment of water
1 M

3 Physical pollution of water is due to
a) Chlorides
b) Turbudity
c) PH
d) All of these
1 M

4 Control of water Borne diseases can be achieved effectively in a community by
a) Defluoridation
b) Disinfection
c) Sterilization
d) Vaccination
1 M

5 Ozone layer thickness is measured in which units
a) PPM
b) PPB
c) Db
d) DU
1 M

6 Demography means
a) Study of forests
b) Study on Human activities
c) Study on earthquakes
d) Study on population growths
1 M

7 Freon's are called
a) Hydrocarbons
b) Ozone
c) Methane
d) Solvents
1 M

8 Which of the following is a biodegradable pollutant
a) DDT
b) Sewage
c) CFC
d) Freon's
1 M

9 Percentage of ground water available on Earth's environment is
a) 0.02
b) 0.5
c) 1.5
1 M

10 During green house effect, carbon di oxide and water vapour absorbs
a) Short wave radiation
b) Long wave radiations
c) Solar radiations
d) UV radiations
1 M

11 Bhopal gas tragedy was caused due to the leakage of___
a) CH4
b) MIC
c) SO2
d) Pesticides
1 M

12 Karnataka state pollution control board was established in the year
a) 1984
b) 1976
c) 1974
1 M

13 Among all oxides of nitrogen which one is responsible for the formation of acid rain
a) Nitrous oxide
b) Nitric oxide
c) Nitrogen trioxide
d) Nitrogen pentoxide
1 M

14 The liquid waste generated from municipal solid waste disposal pits is called
a) Solid waste water
b) Sewage
c) Leachate
d) Compost waste water
1 M

15 Minimum allowable limit of noise pollution for Human persistence is __
a) 40dB
b) 90dB
c) 45dB
d) 55dB
1 M

16 Example of tertiary consumers
a) Plants
b) Cattle
c) Snake
d) Elephant
1 M

17 As per BIS, the minimum allowable limit of iron content in drinking water is ____
a) 1.0mg/l
b) 0.2mg/l
c) 0.3mg/l
d) 0.5mg/l
1 M

18 In Hydro-power plants, power is generated by ___
a) Solar
b) Thermal
c) Water
d) Coal
1 M

19 The PH value of acid rain was recorded in early days
a) 2.5
b) 7.5
c) 4.7
1 M

20 First international earth summit was held at
a) USA
b) Russia
c) Rio-de-Janeiro
d) Johannesburg
1 M

21 Expansion of the term WWF is
a) World wide life force
b) World wide forest
c) World wide life forest
d) World wild life fund
1 M

22 Maximum allowable concentration of total hardness as per BIS in drinking water
a) 600mg/l
b) 300mg/l
c) 1000mg/l
d) 250mg/l
1 M

23 Water pollution prevention and control Act was enacted in the year
a) 1986
b) 1974
c) 1981
1 M

24 Stone cancer is an effect of ___
a) Climate change
b) Hard water
c) Acid rain
d) Excess of calcium
1 M

25 Most stable ecosystem is
a) Mountain
b) Ocean

c) Population
d) Fossil fuels
1 M

26 Anthropogenic activities means
a) Natural made
b) Biological
c) Man made
d) Animal made
1 M

27 Which of the following energy source is less eco-friendly
a) Wind
b) Water
c) Solar
d) Thermal
1 M

28 Which of the following is a biotic component of the eco-system
a) Sunlight
b) Fungi
c) Temperature
d) Water
1 M

29 Generation of wind energy is mainly based on which factor
a) Direction of wind
b) Storms
c) Velocity of wind
d) Wind pressure
1 M

30 Example for abiotic component in an eco-system is
a) Plants
b) Food
c) Water
d) Live stock
1 M

31 Eutrophication means
a) Quality of water in lakes
b) Enrichment of plant nutrients in water
c) Water purification in technique
d) Meeting point of river and sea
1 M

32 Earth's body temperature is approximately equal to__
a) 16.4 C
b) 16.6 C
c) 36 C
d) 21.6 C
1 M

33 Presence of BOD in drinking water indicates
a) Rich content of oxygen
b) Organic matter
c) Turbudity
d) Physical impurities
1 M

34 Which of the following is a natural source of air pollution?
a) Acid rain
b) Precipitation
c) Storms
d) Volcanic eruptions
1 M

35 Effect of carbon monoxide on blood causing
a) H2CO3
b) COHb
c) CO2Hb
d) HbCO2
1 M

36 Ozone is present in which layer of the atmosphere
a) Ozonosphere
b) Stratosphere
c) Toposphere
d) Ionosphere
1 M

37 What is the maximim allowable concentration of fluorides in drinking water
a) 1.0mg/l
b) 1.25mg/l
c) 1.50mg/l
d) 1.60mg/l
1 M

38 Which of the following gas is not concern to green house effect
a) CO2
b) CH4
c) SO2
d) H2O vapour
1 M

39 Which of the following is not a renewable source of energy?
a) Solar
b) Wind
c) Nuclear
d) Geo-Thermal
1 M

40 Optimum groth of bacteria in favourable PH value of
a) 6.5-8.5
b) 7.0
c) 6.5-7.5
d) 7.0-14.0
1 M

41 HIV can be transmitted to humans through which media?
a) Air
b) Blood
c) Virus
d) Hereditary
1 M

42 Mineral resources are
a) Renewable
b) Fossil Fuels
c) Non-renewable
d) Sedimentary rocks
1 M

43 World Ozone day is being celebrated on every year
a) 15th Sept
b) 16th Oct
c) 16th Sept
d) 22nd April
1 M

44 Contribution of carbon di oxide to global warming from industries
a) 50%
b) 24%
c) 25%
1 M

45 Which atmospheric layer is closest to the Earth's surface
a) Mesosphere
b) Troposphere
c) Stratosphere
d) Thermosphere
1 M

46 The air prevention and control of pollution Act was enacted in
a) 1987
b) 1974
c) 1981
1 M

47 Smog is formed by the reaction of which air pollutants
a) Smoke and Mist
b) Smoke and fog
c) Smoke and Bio-Gas
d) Smoke and dust
1 M

48 Which of the following is not a solution to global warming
a) Reducing use of fossil fuels
b) Planting more trees
c) Deforestation
d) Reducing vehicular transportation
1 M

49 Methemoglobinemia is caused by contamination of water due to __
a) Mercury
b) Nitrate
c) Arsenic
d) Nitrates
1 M

50 Earth's Day is celebrated on every year
a) June 22nd
b) Sept. 22nd
c) April 22nd
d) June 5th
1 M

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