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Total Questions : 639 | Page 7 of 64 pages
Question 61. The duration of its day and tilt of its axis are almost identical to those of the Earth. This is true of
  1.    Saturn
  2.    Mars
  3.    Neptune
  4.    Uranus
 Discuss Question
Answer: Option B. -> Mars
Answer: (b)
Question 62. The terms ‘Event Horizon’, ‘Singularity’, ‘String Theory’ and ‘Standard Model’ are sometimes seen in the news in the context of
  1.    Placing satellites in the orbit of the Earth
  2.    Origin and evolution of living organisms on the Earth
  3.    Study of the solar and the lunar eclipses
  4.    Observation and understanding of the Universe
 Discuss Question
Answer: Option D. -> Observation and understanding of the Universe
Answer: (d)
Question 63. Which statement describes the atmosphere of the planet correctly?
  1. Venus is mostly carbon dioxide
  2. Mercury is mostly nitrogen.
  3. Earth is mostly oxygen.
  4. Saturn is mostly helium.
Choose the correct answer using the codes given below.
  1.    1 and 3
  2.    None
  3.    2 and 3
  4.    1 only
 Discuss Question
Answer: Option D. -> 1 only
Answer: (d)Venus is 96% carbon dioxide and 4% nitrogen.For the other planetsMercury doesn’t really have an atmosphere;Earth has 78% nitrogen and 21% oxygen; and Saturn is 19% helium and the rest hydrogen.
Question 64. Which of the following statements is/are correct?
  1. Lunar eclipse takes place when the Earth comes directly between the Sun and the Moon
  2. Solar eclipse happens when the Moon comes directly between the Sun and the Earth
  3. Lunar eclipse takes place when the Sun comes directly between the Earth and the Moon
  4. Solar eclipse happens when the Earth comes directly between the Sun and the Moon
Select the correct answer using the code given below:
Code:
  1.    1 and 2
  2.    2 only
  3.    3 and 4
  4.    1, 2 and 3
 Discuss Question
Answer: Option A. -> 1 and 2
Answer: (a)Lunar eclipse takes place when the Earth comes directly between the Sun and the Moon.Solar eclipse happens when the Moon comes directly between the Sun and the Earth.
Question 65. Match column I with column II and select the correct answer using the code given below the columns:
Column I
Column II
(Special characteristic)
(Name of the planet)
A. Smallest planet of the solar system 
i. Mercury
B. Largest planet of the solar system
ii. Venus
C. Planet second from the Sun in the solar system
iii. Jupiter
 
v. Saturn
Codes: A B C D
  1.    A-(iv); B-(i); C-(ii); D-(iii)
  2.    A-(iv); B-(iii); C-(ii); D-(i)
  3.    A-(iii); B-(v); C-(i); D-(ii)
  4.    A-(ii); B-(iii); C-(v); D-(i)
 Discuss Question
Answer: Option B. -> A-(iv); B-(iii); C-(ii); D-(i)
Answer: (b)
The smallest planet of the solar system is – Pluto
The largest planet of the solar system is – Jupiter
The planet second from the sun in the solar system is – Venus
Planet nearest to the sun – Mercury
Question 66. The planet nearest to the sun is
  1.    Venus
  2.    Pluto
  3.    Earth
  4.    Mercury
 Discuss Question
Answer: Option D. -> Mercury
Answer: (d)The planet nearest to the sun is Mercury. Mercury is the smallest and closest to the Sun of the eight planets in the Solar System, with an orbital period of about 88 Earth days.
Question 67. The planet which is called twin sister of the Earth is
  1.    Mars
  2.    Uranus
  3.    Venus
  4.    Mercury
 Discuss Question
Answer: Option C. -> Venus
Answer: (c)The planet which is called twin sister of earth is Venus. Venus is known as the Earth’s twin because of its similar size, chemical composition and density. However, due to its toxic atmosphere, Venus is not habitable.
Question 68. The sun is veritical over the Tropic of Cancer on
  1.    Sept. 23
  2.    Dec. 22
  3.    June 21
  4.    March 21
 Discuss Question
Answer: Option C. -> June 21
Answer: (c)Sun is vertical over the tropic of cancer on June 21 or Summer Solstice.
Question 69. In the earth’s direction of rotation is reversed, what should be the IST when it is noon at the International Date Line?
  1.    18.30 hrs
  2.    17.30 hrs
  3.    05.30 hrs
  4.    06.30 hrs
 Discuss Question
Answer: Option D. -> 06.30 hrs
Answer: (d) India is a large country spanning over 30° of longitude. It is unusual in having a single time zone all over the country, 5½ hours fast.If the direction of rotation of the earth is reversed then Indian Standard Time will be – 5½ hr.When it is noon the time is 12:00; that will be 6:30 A.M.in place of 17:30 P.M. or 5:30 P.M.
Question 70. If the earth’s axis had not been inclined,
  1. temperature distribution would have been uniform.
  2. days and nights would not have occurred.
  3. seasons would not have occurred.
  4. poles would not have continuous day.

  1.    3 and 4
  2.    2, 3 and 4
  3.    2 and 4
  4.    1, 3 and 4
 Discuss Question
Answer: Option A. -> 3 and 4
Answer: (a)

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