61. If there is no Sun, the colour of the sky would be ________
62. The planet Mercury is difficult to be observed most of the time because ________
63. The correct sequence of planets in the descending order of their equatorial diameter is ________
64. Foucault experiment is proof of which one of the following?
65. The distance between the Earth and the Sun (in million kms) is ________
66. Which of the following is called Red Planet?
67. Which of the following statements is/are correct with regard to Milky Way?
1. It is a spiral galaxy.
2. The solar system resides in one of its spiral arms.
Select the correct answer using the codes given below
1. It is a spiral galaxy.
2. The solar system resides in one of its spiral arms.
Select the correct answer using the codes given below
68. The planet having fourteen moons is ________
69. The exact time taken by the earth for single rotation on its own axis is ________
70. The Planet which comes close to the size of Earth is ________.
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