Tag: effects and successes of environment conservation

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Questions Related to effects and successes of environment conservation

Multiple choice geography pollution - types and sources environmental risks of economic development tundra climatic region effects and successes of environment conservation

Which of the following is not a primary contributor to the greenhouse effect?

  1. chlorofluorocarbons

  2. carbon dioxide

  3. nitrous oxide

  4. methane gas
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Trapping of sun’s heat in the lower atmosphere due to the presence of gases like water vapour, carbon dioxide, methane is called greenhouse effect.

Sun’s radiation is partly absorbed by earth and rest of the radiations are reflected back to the atmosphere which are escaped. But the greenhouse gases form blanket in the atmosphere and trap the radiation from escaping. This causes an increase in earth’s temperature resulting in Global warming.

Multiple choice geography pollution - types and sources environmental risks of economic development tundra climatic region effects and successes of environment conservation

The stage in which the biological processes is used to purify water in a wastewater treatment plants is called :

  1. secondary sewage treatment

  2. wastewater reduction

  3. biochemical reduction

  4. primary sewage treatment
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Secondary treatment is a waste water management technique which uses physical phase separation and a biological process.

Physical phase separation removes suspended solids. Biological process is employed to remove organic matter. 

Example: Bacteria and protozoa consume biodegradable soluble organic contaminants

Multiple choice geography pollution - types and sources environmental risks of economic development tundra climatic region effects and successes of environment conservation

Lichens can be used as :

  1. Bio-indicator for water and air pollution

  2. Bio-indicator for radioactive and air pollution

  3. Bio-indicator for noise and air pollution

  4. Bio-indicator for soil and air pollution
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Living organisms that respond to the change in environment are called bioindicators. Lichens are useful bioindicators for air and water pollution specially for sulphur dioxide pollution. They are also useful in the detection of toxic elemental pollutants and radioactive metals.

Multiple choice geography pollution - types and sources environmental risks of economic development tundra climatic region effects and successes of environment conservation

dB is a standard abbreviation used for the quantitative expression of ______.

  1. a particular pollutants

  2. a waste matter

  3. a good matter

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Noise pollution is a physical form of pollution that affects the receiver directly. dB (decibel) is a standard abbreviation used for the quantitative expression of noise. Noise or pollutant sound has a value of 80 dB and above, it harms hearing system. The WHO has fixed 45 dB as the safe noise level for a city.

Multiple choice geography pollution - types and sources environmental risks of economic development tundra climatic region effects and successes of environment conservation

Why is mercury particularly hazardous?

  1. it is increasing global warming

  2. it is increasing depletion of the ozone layer

  3. it is highly radioactive

  4. the concentration increases up the food chain and reaches to user .
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mercury is hazardous to the environment because it interferes the food chain and enters human body causing adverse effects. This process is called bio magnification.

Example is the cause of Minimata disease, caused due to the mercury pollution in Japan. Tons of Mercury was released by industries into the river water and this entered human bodies by eating the fish which already consumed mercury of river water. Many people suffered nervous disorder because of the disease caused by mercury pollution.

Multiple choice geography pollution - types and sources environmental risks of economic development tundra climatic region effects and successes of environment conservation

Pollution can be classified on the basis of the part of ___________ where it takes place.

  1. atmosphere

  2. environment

  3. ecology

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

B.  Environment


Pollutants can be classified in a number of ways :

a)      On the basis of their forms they exist in the environment after their release. It can be either primary or secondary pollutants

b)      From ecosystem point of view, the pollutants can be classified as biodegradable and non-biodegradable pollutants.

Multiple choice geography pollution - types and sources environmental risks of economic development tundra climatic region effects and successes of environment conservation

The water temperature should preferably be less than _________degree Celsius for aquatic life.

    1. 10

    2. 15

    3. 20

    4. 25
    Reveal answer Fill a bubble to check yourself
    D Correct answer
    Explanation

    Temperature is an important factor to consider when assessing water quality. Water temperature can affect the metabolic rates and biological activity of aquatic organisms. Water temperature should be between 22-25 degree celsius.  But the water temperature should preferably be less than 25 degree celsius because in this temperature aquatic life flourish.

    Multiple choice geography pollution - types and sources environmental risks of economic development tundra climatic region effects and successes of environment conservation

    What are the negative effects on soil and water due to conventional, mechanized farming practices?

    1. reduction in soil organic matter

    2. soil erosion

    3. leaching of pesticides and fertilizers into the groundwater

    4. all of the above
    Reveal answer Fill a bubble to check yourself
    D Correct answer
    Explanation

    Conventional farming systems share many characteristics like rapid technological innovation, large capital investments, uniform high-yield hybrid crops, extensive use of pesticides, fertilizers, and external energy inputs.

    Negative effects include:

    Reduction in soil organic matter may be attributed to excessive use of fertilisers.

    Soil erosion because of over irrigation may lead to soil erosion

    Leaching of pesticides and fertilizers into the groundwater due to extensive use of pesticides and fertilizers.

    Multiple choice geography pollution - types and sources environmental risks of economic development tundra climatic region effects and successes of environment conservation

    What is the harm from the depletion of Earth's ozone layer ________________.

    1. The oxygen content of the atmosphere will decrease

    2. The average temperature of earth's surface will increase gradually

    3. Sea levels will rise as the polar ice caps will gradually melt

    4. Increased amount of Ultra violet radiation will reach earth's surface
    Reveal answer Fill a bubble to check yourself
    D Correct answer
    Explanation

    Depletion of Earth's ozone layer results in increased amount of Ultra violet radiation will reach earth's surface

    Ozone is a protective blanket that is present in stratosphere which protects earth from harmful effects of UV radiations that are present in sun light.

    Chlorofluorocarbons and other halogenated compounds cause ozone depletion.

    Chlorofluorocarbons are anthropogenic and are released from air-conditioning, refrigeration, blowing agents in foams, insulations and packing materials, propellants in aerosol cans, and as solvents.

    Multiple choice geography pollution - types and sources environmental risks of economic development tundra climatic region effects and successes of environment conservation

    Measuring Biochemical Oxygen Demand (BOD) is a method used for _________________.

    1. estimating amount of oxygen in sewage water

    2. estimating amount of organic matter in sewage water

    3. both a and b

    4. none of these
    Reveal answer Fill a bubble to check yourself
    A Correct answer
    Explanation

    BOD stands for Biological Oxygen Demand. It is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic matter present in a given water sample. It is mostly expressed in milligrams of oxygen consumed per litre of sample.