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Environmental Chemistry Test 3

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Environmental Chemistry Test 3
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Stratosphere is a region of the atmosphere which contains

    Solution

    Stratosphere contains Ozone layer

  • Question 2
    1 / -0

    The gas emitted during volcanic eruptions is

    Solution

    CO2 is the gas emitted during volcanic eruptions

  • Question 3
    1 / -0

    Unleaded paint and petrol were introduced because:

    Solution

    Unleaded paint and petrol were introduced because lead affect the brain and cause mental impairment

  • Question 4
    1 / -0

    Biochemical Oxygen Demand, (BOD) is a measure of organic material present in water. BOD value less than 5 ppm indicates a water sample to be __________.

    Solution

    This means water sample is rich in dissolved oxygen.

  • Question 5
    1 / -0

    Catalytic converters must be used in cars to reduce the to reduce the effect of exhaust fumes on the atmosphere. The converter should contain one of the main components

    Solution

    The converter should contain ceramic honeycomb coated with precious metals

  • Question 6
    1 / -0

    Which of these is not released from burning fossil fuels?

    Solution

    Currently, oil burning is responsible for about 30% of all carbon dioxide emissions to air. Natural gas does not release as much carbon,cooper dioxide because of its methane structure. The largest emissions are cause by coal combustion. Coal may result in underground fires that are virtually impossible to extinguish

  • Question 7
    1 / -0

    This process in which nutrient enriched water bodies support a dense plant population, which kills animal life by depriving it of oxygen and results in subsequent loss of biodiversity, is called

    Solution

    Eutrophication is the process in which nutrient enriched water bodies support a dense plant population, which kills animal life.

  • Question 8
    1 / -0

    Chemical species present in the environment are either naturally occurring or generated by human activities. Their interrelation with the surroundings is called:

    Solution

    environmental chemistry basically deals with the interrelationship between chemical species generated by human activities or naturally.

  • Question 9
    1 / -0

    Which of the following statements is wrong?

    Solution

    Depleation of Ozone is responsible for green house effect.

  • Question 10
    1 / -0

    Requirement of macronutrient per acre of the land is

    Solution

    Requirement of macronutrient per acre of the land is 5 to 200 kg

  • Question 11
    1 / -0

    Tropospheric pollution is basically due to

    Solution

    various oxides of sulphur, nitrogen, carbon, halogens causes Tropospheric pollution

  • Question 12
    1 / -0

    Measure of the amount of organic material in the water, in terms of how much oxygen will be required to break it down biologically is termed as

    Solution

    Measure of the amount of organic material in the water, in terms of how much oxygen will be required to break it down biologically is termed as Biochemical Oxygen Demand (BOD)

  • Question 13
    1 / -0

    The greenhouse effect is where:

    Solution

    The greenhouse effect is where heat energy is trapped by the atmosphere

  • Question 14
    1 / -0

    Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of

    Solution

    water pollution causes the death of fishes because of decrease in amount of dissolved oxygen.

  • Question 15
    1 / -0

     Three elements needed for the healthy growth of plants are

    Solution

    The three elements Potassium, Phosphorus and Nitrogen are the most essential elements without which plants can’t thrive hence C is correct.

  • Question 16
    1 / -0

    Acid rain is

    Solution

    The gaseous pollutants come down to the earth in form of rain forms acid rain.

  • Question 17
    1 / -0

    Recycling of materials and energy will lead to

    Solution

    Recycling of materials and energy will lead to decrease in environmental pollution

  • Question 18
    1 / -0

    The greenhouse effect is thought to be the cause of:

    Solution

    The greenhouse effect increases the global temperature

  • Question 19
    1 / -0

    Which of the following statements about photochemical smog is wrong?

    Solution

    photochemical smog has high concentration of oxidising agent.

  • Question 20
    1 / -0

    Which of the following is not a secondary pollutant

    Solution

    CO2 is not secondary pollutant.

  • Question 21
    1 / -0

    Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of

    Solution

    water pollution causes the death of fishes because of decrease in amount of dissolved oxygen.

  • Question 22
    1 / -0

    Reducing potentially hazardous waste through smarter productions is called

    Solution

    metathesis is defined as reducing potentially hazardous waste through smarter productions.

  • Question 23
    1 / -0

    Global warming will not result in:

    Solution

    Global warming will not increasing the size of the hole in the ozone layer

  • Question 24
    1 / -0

    The gaseous envelope around the earth is known as atmosphere. The lowest layer of this is extended upto 10 km from sea level, this layer is _________.

    Solution

    this is troposphere

  • Question 25
    1 / -0

    Residence time of methane in the atmosphere is

    Solution

    Residence time of methane in the atmosphere is 3 - 7 years

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