(A) Aphelion (B) Perihelion
(C) Winter Solstice (D) Summer Solstice
2. Which of the following is the brightest star in our Solar system?
(A) Proxima Centauri (B) Canopus
(C) Sirius (D) Arcturus
3. The age of the solar system is–
(A) 7.8 billion years (B) 3.2 billion years
(C) 4.6 billion years (D) 3.8 billion years
4. The Earth’s annual circuit round the Sun covers a distance of–
(A) 896 million km (B) 966 million km
(C) 1038 million km (D) 1098 million km
5. The speed per minute at which the Earth revolves round the Sun is–
(A) 800 km (B) 900 km
(C) 1,500 km (D) More than 1,600 km
6. The mass of the Sun is nearly–
(A) 1030 kg (B) 2 × 1030 kg
(C) 3 × 1030 kg (D) 5 × 1030 kg
7. How much of the surface of the Moon is visible from the Earth?
(A) More than 75% (B) Only about 40%
(C) About 59% (D) None of these
8. The rate of rotation of the Earth on its axis is highest on–
(A) January 4 (B) December 22
(C) July 4 (D) It never changes
9. The South Pole experiences continuous light at the time of–
(A) Winter Solstice (B) Summer Solstice
(C) Vernal Equinox (D) Antumnal Equinox
10. What is the centre of the Solar System?
(A) A black hole (B) Sunspot
(C) Earth (D) Sun
11. Who was the first to speculate that Venus is completely covered with clouds?
(A) Christian Huygens (B) Giordano Bruno
(C) Copernicus (D) Descartes
12. Which among the following stars flare up to greatly increased brightness and fade away after a short time?
(A) Binary Stars (B) Temporary Stars
(C) Stars (D) Fixed Stars
13. What quantity of hydrogen in the Sun is converted into helium every second?
(A) 4 × 1014 grams (B) 3 × 1018 grams
(C) 2 × 1024 grams (D) 2 × 1040 grams
14. How many hydrogen nuclei combine to form a nucleus of helium in the Sun, with an attendant release of a gamma-ray photon?
(A) 2 (B) 3
(C) 4 (D) 6
15. Titan, the largest moon in the Solar System, is also the largest moon of–
(A) Jupiter (B) Mars
(C) Saturn (D) Uranus
16. Nebular hypothesis is a theory about the origin of the–
(A) Planets (B) Sun
(C) Solar System (D) Galaxy
17. After about another 12,000 years the axis of rotation of Earth will point at which of the following stars?
(A) It will continue to point at the Pole Star as at present (B) Gemini
(C) Proxima Centauri (D) Vega
18. Triton is a natural satellite of–
(A) Saturn (B) Jupiter
(C) Uranus(D) Neptune
19. Counting outwards from the Sun, is the eighth planet of the Solar System.
(A) Neptune (B) Mars
(C) Saturn (D) Uranus
20. Which of the following motions of the Earth is the slowest?
(A) Its rotation on its axis (B) Its revolution around the Sun
(C) Precession (or motion) on its axis (D) None of the above