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Natural Resources Test - 30

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Natural Resources Test - 30
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Weekly Quiz Competition
  • Question 1
    1 / -0
    In the upper atmosphere, _____ becomes ozone, a substance that protects the earth from UV radiation and makes life on land possible.
    Solution
    Ozone is a gas found in the atmosphere consisting of three oxygen atoms: $$\displaystyle { O }_{ 3 }$$. Ozone is formed in the atmosphere when energetic ultraviolet (UV) radiation dissociates molecules of oxygen, $$\displaystyle { O }_{ 2 }$$, into separate oxygen atoms. Free oxygen atoms can recombine to form oxygen molecules but if a free oxygen atom collides with an oxygen molecule, it joins up, forming ozone.
    So, the correct answer is 'Oxygen.'
  • Question 2
    1 / -0
    Water can get polluted naturally due to
    Solution
    The process of addition of adulterant in the water which adversely affects the quality of water is known as water pollution. The polluted water doesn't support human use, such as drinking water and undergoes a marked shift in its ability to support its constituent biotic communities, such as fish. Natural phenomena such as volcanoes, algae blooms, storms, and earthquakes also cause major changes in water quality and the ecological status of water. 
    Thus, the correct answer is option D.
  • Question 3
    1 / -0
    In oxygen cycle, the movement of oxygen takes place within
    Solution
    The oxygen cycle is the biogeochemical cycle that allows the exchange of oxygen between biotic and abiotic components in the environment by two major processes like respiration and photosynthesis. 
    So, the correct answer is option D.

  • Question 4
    1 / -0
    Which of the following is the main source of free oxygen?
    Solution
    • In plants, during the process of photosynthesis, starch and free oxygen are produced from carbon dioxide and water in the presence of sunlight.
        $$6C{O}_{2} + 6{H}_{2}O + $$energy $$\longrightarrow  {C}_{6}{H}_{12}{O}_{6} + 6{O}_{2}$$
    • During respiration, the plants use free oxygen molecules to produce water, carbon dioxide, and energy, required for plants to grow.
    • Conduction is the transfer of heat through matter.
    • So, the correct answer is option C.

  • Question 5
    1 / -0
    Which phase of water cycle gives us fresh water?
    Solution
    The hydrological cycle is a prominent method to rejuvenate the fresh water resources. It involves the evaporation of water into water vapor by the heat of the sun which further condenses into tiny water droplets which fall on the earth as rain. The process of condensation that forms rain is also known as precipitation.
    So, the correct answer is option C.
  • Question 6
    1 / -0
    Which element from the atmosphere is a part of all the processes: respiration, combustion, and formation of oxides of nitrogen?
    Solution
    Oxygen is one of the most important elements of the Earth's atmosphere. It is consumed by every living creature in every natural process. 
    In respiration, living organisms take in oxygen to generate energy from the food that they eat.
    Any combustion reaction requires oxygen.
    Forming oxides of any element requires oxygen.
    Therefore, the correct answer is option A.
  • Question 7
    1 / -0
    ................... is one of the ways by which water moves on the Earth.
    Solution
    Runoff is one of the ways by which water moves across earth's surface, it can be both surface runoff and channel runoff. As it flows, the water may seep into the ground, evaporate into the air, stored in lakes or reservoirs, which are then to be extracted for agricultural or other human uses. 
  • Question 8
    1 / -0
    Water pollution causes damage to the
    Solution
    Water pollution affects the entire biosphere, plants and organisms as all the life forms depend on water for their survival. In almost all cases, the effect is damaging not only to individual species and population but also to the natural biological communities. 
  • Question 9
    1 / -0
    Water cycle leads to change in _______.
    Solution
    During evaporation, water takes up energy from its surroundings and cools the environment. It releases energy when it condenses and warms the environment. This causes a change in the temperature as well as the humidity of the surrounding. 
    Thus, the correct answer is option D.
  • Question 10
    1 / -0
    During water cycle, the water undergoes .......... phase.
    Solution
    • The hydrological cycle is a prominent method to rejuvenate freshwater resources.
    • It involves the evaporation of water into water vapor by the heat of the sun which further condenses into tiny water droplets that fall on the earth as rain. This continuous recycling of water leads to the recharging of water resources.
    • It includes the interconversion of different states of water. The ice present in the glaciers melts due to the overheating of the earth and enters the hydrological cycle.

    So, the correct answer is option D.
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