VTU Environmental Studies - May 2014 Exam Question Paper

VTU First Year Engineering (C Cycle) (Semester 1)
Environmental Studies
May 2014

Total marks: --
Total time: --

INSTRUCTIONS
(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%
d)0.00318

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

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

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

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

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

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

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9 Percentage of ground water available on Earth's environment is
a) 0.02
b) 0.5
c) 1.5
d)0.2

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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

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

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12 Karnataka state pollution control board was established in the year
a) 1984
b) 1976
c) 1974
d)1983

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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

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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

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

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

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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

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

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19 The PH value of acid rain was recorded in early days
a) 2.5
b) 7.5
c) 4.7
d)5.7

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

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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

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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

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23 Water pollution prevention and control Act was enacted in the year
a) 1986
b) 1974
c) 1981
d)1987

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

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25 Most stable ecosystem is
a) Mountain
b) Ocean
c) Population
d) Fossil fuels

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

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

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

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

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

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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

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

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

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

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35 Effect of carbon monoxide on blood causing
a) H₂CO₃
b) COH_b
c) CO₂H_b
d) H_bCO2

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

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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

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

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

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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

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

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

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

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44 Contribution of carbon di oxide to global warming from industries
a) 50%
b) 24%
c) 25%
d)0.75

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

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46 The air prevention and control of pollution Act was enacted in
a) 1987
b) 1974
c) 1981
d)1986

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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

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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

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

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

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