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MCQs

Total Questions : 62 | Page 6 of 7 pages
Question 51. Which of the following is a disease that proceeds from obstruction of the liver?
  1.    cholera
  2.    dysentery
  3.    jaundice
  4.    hepatitis
 Discuss Question
Answer: Option C. -> jaundice
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 52. How much percentage of the Earth's crust is covered by water?
  1.    0.69
  2.    0.71
  3.    0.8
  4.    0.75
 Discuss Question
Answer: Option B. -> 0.71
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 53. What is the total amount of water present on Earth?
  1.    1.33 billion cubic kilometers
  2.    1.33 billion cubic meters
  3.    1.33 million cubic kilometers
  4.    1.33 million cubic meters
 Discuss Question
Answer: Option A. -> 1.33 billion cubic kilometers
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 54. Hard water can block radiators due to the formation of
  1.    insoluble calcium and magnesium salts
  2.    insoluble sodium salts
  3.    insoluble phosphate salts
  4.    insoluble potassium salts
 Discuss Question
Answer: Option A. -> insoluble calcium and magnesium salts
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 55. Which of the following is an acute inflammation of the liver?
  1.    cholera
  2.    dysentery
  3.    jaundice
  4.    hepatitis
 Discuss Question
Answer: Option D. -> hepatitis
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 56. Ice floats on top of the water because
  1.    water expands on freezing
  2.    water contracts on freezing
  3.    ice is lighter than water
  4.    none of above
 Discuss Question
Answer: Option A. -> water expands on freezing
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 57. Water in swimming pools is purified by adding
  1.    sodium
  2.    chlorine
  3.    phosphorus
  4.    potassium
 Discuss Question
Answer: Option B. -> chlorine
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 58. Process in which water is allowed to stand in a reservoir is called
  1.    sedimentation
  2.    coagulation
  3.    filtration
  4.    chlorination
 Discuss Question
Answer: Option A. -> sedimentation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 59. Water that does not form scum is called
  1.    hard water
  2.    soft water
  3.    dirty water
  4.    clean water
 Discuss Question
Answer: Option A. -> hard water
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 60. Process in which chlorine is added to water to kill any remaining bacteria is called
  1.    sedimentation
  2.    coagulation
  3.    filtration
  4.    chlorination
 Discuss Question
Answer: Option D. -> chlorination
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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