5th Class Science Pollution and Calamities Question Bank

done Pollution and Calamities Total Questions - 20

• question_answer1)
  A news flashed on TV that 70 people died in a/an X in Ladakh. The X here can be _____.                   
  A)
   Tsunami           done clear
  B)
   Sandstorm        done clear
  C)
          Avalanche      done clear
  D)
          All of these        done clear
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• question_answer2)
  There was a large number of dead fish drifting towards shore. Many dead birds with sticky, black coating feathers could also be seen there. A/An ____ might have occurred nearby.                 
  A)
   Tsunami         done clear
  B)
                        Volcanic eruption done clear
  C)
                                  Oil spill done clear
  D)
   Earthquake done clear
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• question_answer3)
  ____ is a factor causing noise pollution.
  A)
   A whispering boy done clear
  B)
   A crying baby done clear
  C)
   A drilling machine at a construction site done clear
  D)
   A moving toy car done clear
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• question_answer4)
  Greenhouse gases cause global warming. Which of the following is a greenhouse gas?
  A)
   Oxygen            done clear
  B)
   Nitrogen            done clear
  C)
          Carbon dioxide    done clear
  D)
          Magnesium oxide done clear
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• question_answer5)
  Select the method that prevents soil erosion by water.
  A)
   Terrace farming done clear
  B)
   Wind breaks done clear
  C)
   Embankments done clear
  D)
   Both (a) and (c) done clear
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• question_answer6)
  Select the incorrect statement regarding water pollution.
  A)
   Suspended impurities make water less transparent causing death of submerged aquatic plants. done clear
  B)
   Polluted water can cause diseases like typhoid, cholera and diabetes. done clear
  C)
   Pollution decreases dissolved oxygen content of water. done clear
  D)
   Agricultural runoff pollutes water by adding pesticides and fertilizers into it. done clear
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• question_answer7)
  When oxides of nitrogen and sulphur react with water vapour in the air they cause ______.
  A)
  Ozone depletion done clear
  B)
  Global warming done clear
  C)
  Acid rain done clear
  D)
  Oil spill done clear
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• question_answer8)
  If an earthquake occurs, which of the following you should not do?
  A)
   If you are indoors, stay in and get under a desk or a table. done clear
  B)
   If you are outdoors, stay away from trees and buildings. done clear
  C)
   If you are on a beach, get into the sea. done clear
  D)
   All of these done clear
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• question_answer9)
  The given picture shows terrace farming. It helps in _____.  
  A)
   Reducing soil erosion by using non- arable land done clear
  B)
  Reducing soil erosion by water done clear
  C)
   Reducing soil erosion by overgrazing done clear
  D)
   Reducing soil erosion by deforestation done clear
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• question_answer10)
  Man carries out deforestation to provide space for buildings and farms. Some also cut down trees to provide wood for furniture and paper manufacturing. Which of the following would possibly result from the above activities?

  (i) Top soil erosion may occur.

  (ii) Some animals may become extinct.

  (iii) There may arise a problem of global warming.

  (iv) Some possible sources of natural drugs to cure diseases may be lost.

  A)
   (i) and (ii) only done clear
  B)
   (iii) and (iv) only done clear
  C)
   (i), (ii) and (iii) only done clear
  D)
   (i), (ii), (iii) and (iv) done clear
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• question_answer11)
  Which of the following statements is correct?
  A)
   The mantle or the upper layer of the Earth is made of volcanoes. done clear
  B)
   The liquid that comes out of a volcano is called magma. done clear
  C)
   Based on the nature of eruption, volcanoes can be active, dormant or extinct. done clear
  D)
   The magnitude of tsunami is measured on Richter Scale developed by Charles Richter in 1985. done clear
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• question_answer12)
  Which one of the following pairs is wrongly classified?
  A)

  Positive effect on the environment	Negative effect on the environment
  Incinerating rubbish in residential areas	Covering opened dust bins left out in the open

                  done clear
  B)

  Positive effect on the environment	Negative effect on the environment
  Breeding animals like chicken and sheep for food	Cutting down trees

                  done clear
  C)

  Positive effect on the environment	Negative effect on the environment
  Collecting rainwater for watering garden plants	Feeding animals in the wild

                  done clear
  D)

  Positive effect on the environment	Negative effect on the environment
  Using recycled material	Leaving unfinished food at the canteen table

  done clear
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• question_answer13)
  Ali studied two groups of things as shown in the table below.

  Biodegradable	Non-biodegradable
  Fruit Peel	Gold chain
  Meat	Polybag
  Dairy products	Aluminium can

  He made the following inferences. Which one of the inferences is correct?
  A)
   All non-biodegradable objects are hard. done clear
  B)
   All living things are non-biodegradable. done clear
  C)
   Biodegradable objects come only from animals. done clear
  D)
   Most things obtained from living organisms are biodegradable. done clear
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• question_answer14)
  Which of the things listed below are biodegradable?

  (i) Wooden log	(ii) Plastic bag
  (iii) Gold necklace	(iv) Roasted chicken
  (v) Credit card	(vi) Apple

  A)
   (i) and (ii) only done clear
  B)
   (iii) and (iv) only done clear
  C)
   (iii), (iv) and (v) only done clear
  D)
   (i), (iv) and (vi) only done clear
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• question_answer15)
  The given options show the bacterial count, oxygen level and the number of green plants and animals in the river near each of four towns A, B, C and D. Which town is situated near an unpolluted river?
  A)

  Bacterial count	Oxygen level	Number of green plants	Number of animals
  Low	High	Few	Few

                  done clear
  B)

  Bacterial count	Oxygen level	Number of green plants	Number of animals
  High	Low	Few	Many

                  done clear
  C)

  Bacterial count	Oxygen level	Number of green plants	Number of animals
  High	Low	Few	Few

                  done clear
  D)

  Bacterial count	Oxygen level	Number of green plants	Number of animals
  Low	High	Many	Many

  done clear
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• question_answer16)

  The given graph shows the changes in the population of an insect found on a Jackfruit tree after four different sprayings of the same insecticide.

  What conclusion can you draw from the graph?

     
  A)
  The insecticide had no effect on the insects at all.                       done clear
  B)
  The insect population had become resistant to the insecticide. done clear
  C)
  The insect population increased as the wrong type of insecticide was used. done clear
  D)
  The insecticide helped to reduce the number of insects permanently. done clear
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• question_answer17)
  A large area of forest was destroyed completely by forest fire. Which of the following statements hold(s) true regarding it?

  (i) More soil will be eroded as the soil is not protected by trees from wind and rain.

  (ii) The land will have more fresh air as there are lesser trees to take in oxygen.

  (iii) Wildlife will inhabit the cleared area because more space is available now.

  (iv) New trees will grow quickly to replace the burnt ones as the ash of the burnt trees will make the soil more fertile.

  A)
   (i) only done clear
  B)
   (i) and (iv) only done clear
  C)
   (i), (ii) and (iv) only done clear
  D)
   (i), (ii), (iii) and (iv) done clear
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• question_answer18)

  DIRECTION: Refer to the given word grid and answer the question.

  Select the option that is not hidden in the given word grid.
  A)
   Rays of SUN that cause cancer done clear
  B)
   A gas that can cause global warming done clear
  C)
   A method that prevents soil erosion by wind done clear
  D)
   A calamity that occurs when an earthquake occurs under sea done clear
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• question_answer19)

  DIRECTION: Refer to the given word grid and answer the question.

  The term used for _______ can be found in the given word grid.
  A)
   The process of clearing forests done clear
  B)
   Rain which is acidic in nature done clear
  C)
   The process of re-establishing a cleared forest done clear
  D)
   Materials that get decomposed when thrown done clear
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• question_answer20)
  Scientists were studying two types of hospital waste, X and Y for their disposal and their effect on environment. They plotted a graph showing change in their quantities over time, when dumped in an open field. Refer to the given graph and select the option that correctly identifies X and Y.          
  A)

  X	Y
  Syringes	Cotton swabs

                  done clear
  B)

  X	Y
  Cotton bolls	Broken scalpels

  done clear
  C)

  X	Y
  Broken scalpels	Syringes

                  done clear
  D)

  X	Y
  Band-aids	Medicines

  done clear
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