Astronomy (Objective) (Pages :11)

  • 61 Which is the nearest planetary nebula to Earth?

    Ans : The Halix Nebula (NGC 7293) lying about 450 light years away
  • 62 What are the most distant objects in the universe found to date?

    Ans : Quasars
  • 63 By which name, the dying star that have expanded greatly from its original size and gives off red light are known?

    Ans : Red Giant
  • 64 Which is the nearest star cluster to our solar system?

    Ans : Hyades cluster in the Taurus constellation. (The Bull). It’s about 150 million light years away.
  • 65 The multi coloured lights that sweep across the sky in waves and are visible in the Antarctic region are called?

    Ans : Aurora Australis
  • 66 The part of the sun which is visible only during eclipses, as a remarkable silver pearly radiant glow around the sun?

    Ans : Corona
  • 67 Centre of our solar system?

    Ans : Sun
  • 68 Members of the solar system?

    (A) Planets
    (B) satellites
    (C) dwarf planets
    (D) asteroids
    (E) comets

    Ans :()

  • 69 In which direction on the horizon does the Sun appear to rise on July 4 in New York State?

    Ans : north of due east
  • 70 No. of planets in the solar system?

    Ans : Eight
  • 71 The solar system moves with an average speed of?

    Ans : 250 km/sec
  • 72 The largest body of the solar system?

    Ans : Sun
  • 73 The highest mountain of Mars is?

    Ans : Nix Olympia
  • 74 Parts of the Sun?

    (A) Core
    (B) photosphere
    (C) chromosphere and corona

    Ans :()

  • 75 The region in the milkyway where the sun is situated?

    Ans : Orion Arm
  • 76 The visible part of the Sun’s surface is called?

    Ans : Photosphere
  • 77 Stream of protons blowing out of the corona and sweeping over the whole solar system is called?

    Ans : Solar wind
  • 78 Bright spots seen on the surface of the sun is called?

    Ans : Plages
  • 79 Dark spots seen on the surface of the sun is called?

    Ans : Sunspot
  • 80 The average temperature of the planets?

    Ans : decreases with greater distance from the Sun
  • 81 The inner planets in the solar system are?

    (A) Mercury
    (B) Venus
    (C) Earth and Mars

    Ans :()

  • 82 The outer planets in the solar system?

    (A) Jupiter
    (B) Saturn
    (C) Uranus and Neptune

    Ans :()

  • 83 The planet nearest to the sun?

    Ans : Mercury
  • 84 The smallest planet?

    Ans : Mercury
  • 85 Period of rotation of Mercury?

    Ans : 58 days
  • 86 Revolution period of Mercury?

    Ans : 88 days
  • 87 The most hostile planet is?

    Ans : Mercury
  • 88 Which two planets in the solar system do not have moons?

    Ans : Mercury and Venus
  • 89 In what way are the planets Mars, Mercury, and Earth similar?

    Ans : They have elliptical orbits with the Sun at one focus.
  • 90 The planet nearest to the Earth?

    Ans : Venus

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