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Environmental Issues Test - 41

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Environmental Issues Test - 41
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Destruction of ozone can cause 
    Solution
    Destruction of ozone can cause skin cancer, cataract and can hinder growth of plant. Ozone prevents the harmful radiations from reaching the surface of earth. The UV radiation has enough energy to cause adverse effects on all life systems, especially humans. It can destroy parts of DNA molecules that stores and propagate genetic information from one generation to another generation.
  • Question 2
    1 / -0
    The effects of radioactive pollutants depends upon
  • Question 3
    1 / -0
    Neem leaves or turmeric are used specifically in grain storage as 
    Solution
    Organic farming may be defined as a farming system with no or minimal use of chemicals as fertilizers, herbicides, pesticides etc, and with the maximum use of organic manures, recycled farm waste, use of bio-agents (such as culture of blue green alagae) in preparation of biofertilizers, neem leaves or turmeric specifically in grain storage as bio-pesticides, with healthy cropping systems.
    Thus, the correct answer is option A.
  • Question 4
    1 / -0
    Bio-agents such as culture of blue green algae are used in preparation of
    Solution
    Organic farming may be defined as a farming system with no or minimal use of chemicals as fertilizers, herbicides, pesticides etc, and with the maximum use of organic manures, recycled farm waste, use of bio-agents (such as culture of blue green algae) in preparation of biofertilizers, neem leaves or turmeric specifically in grain storage as bio-pesticides, with healthy cropping systems.
    Thus, the correct answer is option A.
  • Question 5
    1 / -0
    Radioactive fall out contaminates
    Solution
    Nuclear pollution is extremely hazardous in nature. It occurs as a result of nuclear explosions that are performed during nuclear tests. The explosions cause the release of radioactive material into the stratosphere from where they fall into the earth's atmosphere. The smallest particles of the radioactive material called fallout settle on the leaves of plants and trees. These leaves are eaten by the grazing animals. Hence radioactive material enters the ecosystem. Humans consume these particles through the food chain leading to cancer and genetic mutation. Genetic mutations have long-term deteriorating effect. Fallouts may also accumulate in the seas that harm fishes and ultimately humans. Hence radioactive fall out contaminates air, soil and water. Thus the correct answer is option A.
  • Question 6
    1 / -0
    Bharat stage emission standards is instituted in India to regulate
    Solution
    Bharat stage emission standard is instituted by the Government of India to regulate the output of air pollutants from engine equipment including motor vehicles. It ios based on the European regulation.
  • Question 7
    1 / -0
    Advantages of organic farming is (are)
    Solution
    Organic farming produces condition for high yielding and good quality of crops. They improve the physical properties of the soil. It supports water conservation. They save energy and protect our environment. 
    So, the correct option is 'All of the above'.
  • Question 8
    1 / -0
    Water pollution can be identified by testing its
    Solution
    Water pollution can be identified by testing its PH level and Biological Oxygen Demand (BOD)  Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds. Acid rains, dumping of chemicals into the water by individuals, industries, and communities.; steam from coal mine drainage etc affect the pH of the water in its reservoir. Thus by testing the pH of water, on the scale from 1 to 14, the pollution in water can be identified.  Biochemical oxygen demand is a measure of the quantity of oxygen used by microorganisms (e.g., aerobic bacteria)  in the oxidation of organic matter. This value varies with the amount of pollution in water hence pollution can be determined by BOD.
    So, the correct answer is 'Both a and b'.
  • Question 9
    1 / -0
    Disease caused due to increases particulate pollutant in air
    Solution
    Bronchitis and asthma are both respiratory track diseases caused due to air pollution. Various pollutants of air such as sulphur dioxide (SO2) and oxides of nitrogen (NOx) are acidic harmful gases. When inhaled along with air, these affect the respiratory passage leading to breathing difficulties. These may cause bronchitis, asthma and lung cancer .
  • Question 10
    1 / -0
    Given below are the measures taken to control air pollution in India. Identify the correct statement.
    A) vehicular emission norms.
    B) fuel quality specification.
    C) use of electrostatic precipitators in vehicles.
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