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Total Questions : 639 | Page 3 of 64 pages
Question 21. Which of the following statements about the structure of the sun is/are true?
  1. Atoms absorb and re-radiate electromagnetic energy generated in the core moving it to the sun’s surface
  2. The convection zone consists of Row density gases, stirred by convection
  3. As the gases warm and become less dense, they rise to the sun’s surface
  4. The gases emit energy into space in the form of visible light, ultra-violet light and infra-red radiation
  1.    None
  2.    1, 2, 3 and 4
  3.    2 and 4
  4.    1, 3 and 4
 Discuss Question
Answer: Option B. -> 1, 2, 3 and 4
Answer: (b)atoms absorb and re-radiate electromagnetic energy generated in the core moving it to the sun’s surface. The convection zone consists of low-density gases stirred by convection.,p>As the gases warm and become less dense, they rise to the sun’s surface. The gases emit energy into space in the form of visible light, ultra-violet light and infra-red radiation.
Question 22. The Earth becomes maximum distance from the sun on
  1.    September 22nd
  2.    July 4th
  3.    December 22nd
  4.    January 30th
 Discuss Question
Answer: Option C. -> December 22nd
Answer: (c)
The Earth becomes maximum distance from the sun on 22nd December. The aphelion is the point in the orbit of a planet or comet where it is farthest from the Sun.
The Earth reaches its aphelion when the Northern Hemisphere is experiencing summer.
Question 23. Which of the following statements is/ are correct?
  1. The major constituent mineral of granite rock is quartz.
  2. The major constituent mineral of sandstone rock is feldspar. 3. The major constituent mineral of limestone rock is dolomite.
Select the correct answer using the code given below:
  1.    1 and 2
  2.    2 and 3
  3.    3 only
  4.    1, 2 and 3
 Discuss Question
Answer: Option A. -> 1 and 2
Answer: (a) Limestone is composed of mineral calcite and aragonite which are different forms of calcium carbonate. Limestones may be formed from skeletons of corals and foraminifera.It is a sedimentary rock easily soluble in water.
Question 24. Which one of the following explains the earthquakes of the eastern margins of Asia?
  1.    Subduction of Indian plate under Asiatic plate
  2.    Subduction of American plate under the Pacific plate
  3.    Subduction of African plate below European plate
  4.    Subduction of Pacific plate under Asiatic plate
 Discuss Question
Answer: Option D. -> Subduction of Pacific plate under Asiatic plate
Answer: (d)
In 1906, Montessus de Bailore described the earthquakes and their characteristics within a specific region.
It generally occurs by subduction of the pacific plate under the Asiatic plate and triggered a series of devastating Tsunamis.
Question 25. Which one of the following geological periods was frequented by increased volcanic activities?
  1.    Jurassic period
  2.    Miocene period
  3.    Ordovician period
  4.    Cretaceous period
 Discuss Question
Answer: Option D. -> Cretaceous period
Answer: (d)
Question 26. Lunar eclipse occurs
  1.    When sun lies between earth and moon
  2.    None of these
  3.    When earth lies between sun and moon
  4.    When moon lies between earth and sun
 Discuss Question
Answer: Option C. -> When earth lies between sun and moon
Answer: (c)
Question 27. In the structure of planet Earth, below the mantle, the core is mainly made up of which one of the following?
  1.    Iron
  2.    Silicon
  3.    Chromium
  4.    Aluminium
 Discuss Question
Answer: Option A. -> Iron
Answer: (a)
Question 28. Which planet in our solar system is nearly as big as the earth ?
  1.    Venus
  2.    Pluto
  3.    Mars
  4.    Mercury
 Discuss Question
Answer: Option A. -> Venus
Answer: (a)Venus is sometimes called as Earth's twin planet, in terms of size and composition. Like the earth, Venus is covered with thick clouds and has an atmosphere.,p>There is almost the same amount of gravity on Venus but the pressure on the planet is about 100 times bigger than on Earth.
Question 29. Consider the following statements:
  1. The albedo of an object determines its visual brightness when viewed with reflected light.
  2. The albedo of Mercury is much greater than the albedo of the Earth.
Which of the statement(s) given above is/are correct?
  1.    Both 1 and 2
  2.    Neither 1 nor 2
  3.    2 only
  4.    1 only
 Discuss Question
Answer: Option D. -> 1 only
Answer: (d)The albedo of an object determines its visual brightness when viewed with reflected light. Albedo is the fraction of solar energy (shortwave radiation) reflected from the Earth back into space.It is a measure of the reflectivity of the earth’s surface.
Question 30. Match the following List-I & II  with Longitudes & Dates
List I
List II
(Longitudes)
(Dates)
A. Prime Meridian
1. 180º longitude
B. Tropic of Cancer
2. 23½º N latitude
C. International Date Line
3. 0º longitude
D. Arctic Circle
4. 23½º S latitude
E. Tropic of Capricorn
5. 66½º N latitude
Codes: A B C D E
  1.    3 1 4 5 2
  2.    3 4 5 2 1
  3.    3 2 1 5 4
  4.    2 4 5 1 3
 Discuss Question
Answer: Option C. -> 3 2 1 5 4
Answer: (c)
A prime meridian is a meridian (a line of longitude) in a geographical coordinate system at which longitude is defined to be 0°. A prime meridian and its opposite in a 360°-system, the 180th meridian (at 180° longitude), form a great circle. This great circle divides the sphere, e.g., the Earth, into two hemispheres.
The Tropic of Cancer also referred to as the Northern Tropic, is the most northerly circle of latitude on the Earth at which the Sun may appear directly overhead at its culmination.
The International Date Line (IDL) is an imaginary line of longitude on the Earth’s surface located at about 180 degrees east (or west) of the Greenwich Meridian.
Arctic Circle is an imaginary circle around the earth, parallel to the equator, at latitude66° 32' N; it marks the northernmost point at which the sun appears above the level of the horizon on the winter solstice.
Tropic of Capricorn is the parallel of latitude that is approximately $23 1/2$ degrees south of the equator and that is the southernmost latitude reached by the overhead sun 40.

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