(A) Tropic of Cancer (B) Equator
(C) Tropic of Capricorn (D) None of these
2. Which of the following gases is most predominant in the Sun?
(A) Hydrogen (B) Nitrogen
(C) Ozone (D) Helium
3. If the Earth had no satellite of its own (i.e., the moon), which of the following phenomena will not occur ?
(A) Neap tide (B) Ocean currents
(C) Spring tide (D) All will not occur
4. The time taken by the Uranus to revolve round the Sun is approximately–
(A) 76 years (B) 80 years
(C) 84 years (D) 90 years
5. Which is the brightest planet as seen from the Earth ?
(A) Mercury (B) Pluto
(C) Jupiter (D) Venus
6. Which of the following stars marks fairly precisely the position where the axis of rotation of the Earth cuts the celestial sphere?
(A) Arcturus (B) Dhruva
(C) Gemini (D) Sirius
7. Which of the following statements about the Sun in the celestial sphere or its role in the Solar System is not correct?
(A) It is a medium-sized star of average brightness among millions of other stars
(B) It revolves round the nine planets in the Solar System
(C) The motion of all the members of the Solar System is governed mainly by the gravitational force of the Sun
(D) All the above statements are correct
8. What is the distance between the Earth and the Sun?
(A) 100 × 106 km (B) 109 × 106 km
(C) 125 × 106 km (D) 150 × 106 km
9. How many times is the Sun bigger in size than the Earth ?
(A) 69 times (B) 89 times
(C) 99 times (D) 109 times
10. How many times is the Sun heavier than the Earth ?
(A) 3,30,000 times (B) 3,00,000 times
(C) 2,70,000 times (D) 1,50,000 times
11. The study of motion of which of the following planets around the Sun led
Johannes Kepler to formulate his three laws about planetary motions?
(A) Mercury (B) Mars
(C) Saturn (D) Venus
12. Light takes nearly 4 years to reach us from the nearest star. What is the distance between that star and the Earth ?
(A) 2.18 x 1016 m (B) 2.58 x 1016 m
(C) 3.18 x 1016 m (D) 3.78 x 1016 m
13. “Galileo Satellites”, named after their discoverer, are four large moons of the planet–
(A) Jupiter (B) Neptune
(C) Saturn (D) Uranus
14. Which of the following statements is correct?
(A) Only asteroids revolve round the Sun in circular orbits
(B) Some comets revolve round the Sun in circular orbits while others in elliptical orbits
(C) Only the planets move around the Sun in elliptical orbits
(D) The planets, asteroids and comets revolve round the Sun in elliptical orbits
15. Who was the first person to measure the size of another planet?
(A) Galileo Galilei (B) Christian Huygens
(C) Isaac Newton (D) Giordano Bruno
16. All of the following planets have lesser diameter than the Earth, except–
(A) Jupiter (B) Mars
(C) Mercury (D) Venus
17. Who, wrote the book “The Harmonies of the World”?
(A) Isaac Newton (B) Johannes Kepler
(C) Albert Einstein (D) Giordano Bruno
18. The apparent motion of celestial objects like the stars, planets and satellites (as seen from the Earth) from East to West is–
(A) due to daily rotation of the Earth on its axis
(B) because the celestial objects move from East to West
(C) due to the annual revolution around the Sun
(D) because the Earth’s left side faces the Sun and objects seen from the left side always seem to move from East to West
19. What will happen if the Earth were to stop its rotatory motion on its axis?
(A) There will be no seasons on the Earth
(B) The half sphere on the right side of its north pole will have day light all the time
(C) There will be no day and night as at present
(D) The Earth will become a very hot planet like Mercury
20. The Sun is–
(A) made of rock and metal (B) a solid body
(C) a mass of hot gases (D) partly rock and metal and partly a mass of hot gases