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MCQs

Total Questions : 90 | Page 6 of 9 pages
Question 51. How is the heat inside earth restored?
  1.    Radioactive decay of elements
  2.    Sun restores the heat
  3.    Hot steam is pumped into earth
  4.    Cosmic rays
 Discuss Question
Answer: Option A. -> Radioactive decay of elements
Answer: (a).Radioactive decay of elements
Question 52. What is the earth’s core made up of?
  1.    Gamma rays
  2.    Nitrogen
  3.    Iron
  4.    Gold
 Discuss Question
Answer: Option C. -> Iron
Answer: (c).Iron
Question 53. What is continental drift?
  1.    Tectonic plates pushing against each other
  2.    Continents being pulled due to gravitational force
  3.    Continents being pulled due to nuclear force
  4.    Tectonic plates expanding
 Discuss Question
Answer: Option A. -> Tectonic plates pushing against each other
Answer: (a).Tectonic plates pushing against each other
Question 54. Which of the following surrounds the earth’s core?
  1.    Mt. Everest
  2.    Crust
  3.    Hydrogen
  4.    Mantle
 Discuss Question
Answer: Option D. -> Mantle
Answer: (d).Mantle
Question 55. What is the increase in temperature per kilometer starting from the crust?
  1.    15° Celsius
  2.    17 – 30° Celsius
  3.    100° Celsius
  4.    50 – 87° Celsius
 Discuss Question
Answer: Option B. -> 17 – 30° Celsius
Answer: (b).17 – 30° Celsius
Question 56. Who initiated electricity generation from geothermal energy?
  1.    Indians
  2.    Italians
  3.    Americans
  4.    Africans
 Discuss Question
Answer: Option B. -> Italians
Answer: (b).Italians
Question 57. Which of the following countries hosts the largest geothermal field?
  1.    Iran
  2.    Italy
  3.    Australia
  4.    United States
 Discuss Question
Answer: Option D. -> United States
Answer: (d).United States
Question 58. Why did the first Geysers project in California fail?
  1.    Did not find geothermal site
  2.    Insufficient steam
  3.    Corrosion of equipment
  4.    Availability of pure steam
 Discuss Question
Answer: Option C. -> Corrosion of equipment
Answer: (c).Corrosion of equipment
Question 59. Which of the following is used to locate a geothermal site?
  1.    Drilling wells
  2.    Reflection
  3.    Seismograph
  4.    SONAR
 Discuss Question
Answer: Option A. -> Drilling wells
Answer: (a).Drilling wells
Question 60. Which of the following is the most probably location of geothermal site?
  1.    Grasslands
  2.    Volcanoes
  3.    Coasts
  4.    River beds
 Discuss Question
Answer: Option B. -> Volcanoes
Answer: (b).Volcanoes

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