| Category |
General Knowledge |
| Part |
Solar System |
| Question No. |
25 |
| Time |
25 Minuts |
1. What is the name of our Galaxy?
a)Large Magellanic Cloud
b) Milky Way
c) Black Eye Galaxy
d) Andromeda galaxy
Ans- b) Milky Way.
2. What is the smallest planet of our Galaxy?
a) Uranus
b) Venus
c) Mercury
d) Neptune
Ans- c) Mercury, 74.8 million km².
3. which is the smallest natural satellite in our solar system?
a) Deimos
b) Europa
c) Enceladus
d) Callisto
Ans- a) Deimos, a moon of Mars with a mean radius of about 6.2 kilometers (3.9 miles).
4. which is the biggest natural satellite in our solar system?
a) Enceladus
b) Tethys
c) Ganymede
d) Phobos
Ans- c) Ganymede, 5262 km.
5. Which planet has the highest gravity?
a) Saturn
b) Jupiter
c) Mars
d) Earth
Ans- b) Jupiter, its gravity is 24.79 m/s², which is approximately 2.5 times the gravity of Earth (9.8 m/s²).
6. Which natural satellite has the highest gravity?
a) Enceladus
b) Lo
c) Thebe
d) Mimas
Ans- b) Lo, it is one of Jupiter's moons. Io has a surface gravitational acceleration of about 1.83 meters per second squared, which is roughly 18.3% of Earth's gravity.
7. Which planet has the lowest gravity?
a) Uranus
b) Venus
c) Mercury
d) Neptune
Ans- c) Mercury. measured at about 3.7 m/s² compared to Earth's 9.807 m/s².
8. Which planet has acid rain?
a) Uranus
b) Venus
c) Neptune
d) Uranus
Ans- b) Venus experiences sulfuric acid rain. This rain originates from sulfuric acid clouds in the planet's dense atmosphere.
9. Which is he hottest planet in our solar system?
a) Uranus
b) Venus
c) Mercury
d) Neptune
Ans- c) Mercury.
10. Which planet has the longest day?
a) Uranus
b) Venus
c) Neptune
d) Uranus
Ans- b) Venus has the longest day of any planet in our solar system, with one Venusian day lasting approximately 243 Earth days.
11. Which planet has the longest night?
a) Uranus
b) Saturn
c) Neptune
d) Uranus
Ans- d) Uranus has the longest nights in our solar system, with each pole experiencing 42 years of darkness followed by 42 years of daylight.
12. Which is tallest mountain in the solar system?
a) Ascraeus Mons
b) Boosaule Mons
c) Olympus Mons
d) Rheasilvia peak
Ans- c) Olympus Mons, around 16 miles (24 km) high.
13. What is the surface temperature of the sun?
a) 5,500 degrees Celsius
b) 6,500 degrees Celsius
b) 7,500 degrees Celsius
b) 8,500 degrees Celsius
Ans- b) Sun's visible surface, the photosphere, has a temperature of approximately 5,500 degrees Celsius (9,900 degrees Fahrenheit) or about 5,772 Kelvin.
14. What is the core temperature of the sun?
a) 12 million degrees
b) 13 million degrees
b) 15 million degrees
b) 17 million degrees
Ans- c) 15 million degrees Celsius (27 million degrees Fahrenheit).
15. What is the largest known star in the universe?
a) VY Canis Majoris
b) UY Scuti
c) Stephenson 2-18
b) Antares
Ans- c) Stephenson 2-18, a red supergiant estimated to be around 2,150 times wider than the Sun.
16. what is the speed of light?
a) 289 792 458 m / s
b) 292 792 458 m / s
c) 295 792 458 m / s
d) 299 792 458 m / s
Ans- d) 299 792 458 m/s.
17. Which is the brightest star outside our solar system?
a) Vega
b)Rigel
c) Sirius
d) Capella
Ans- c) Sirius.
18. Which planet can float on water?
a) Saturn
b) Jupiter
c) Mars
d) Earth
Ans- a) Saturn .
19. Which planet has not solid surface from following?
a) Uranus
b) Venus
c) Mercury
d) Mars
Ans- a) Uranus.
20. Which is the brightest planet in our solar system?
a) Uranus
b) Venus
c) Mercury
d) Mars
Ans- b) Venus.
21. How long does it take for sunlight to reach the Earth?
a) 300 seconds
b) 400 seconds
c) 500 seconds
d) 600 seconds
Ans- c) 500 seconds.
22. Which planet has the highest concentration of methane gas?
a) Uranus
b) Venus
c) Mercury
d) Mars
Ans- a) Uranus, methane making up a significant portion of its internal mass and 2.3% of its atmosphere.
23. What is the size of our galaxy?
a) 100,000 light-years in diameter
b) 200,000 light-years in diameter
c) 300,000 light-years in diameter
d) 400,000 light-years in diameter
Ans- a) 100,000 light-years in diameter.
24. Which planet has the highest concentration of hydrogen gas?
a) Saturn
b) Venus
c) Jupitor
d) Mars
Ans- c) Jupiter has the highest concentration of hydrogen gas, with its atmosphere being approximately 75-90% hydrogen by mass and volume.
25. Which gas is responsible for Sun's temperature?
a) Helium
b) Hydrogen
c) Methane
d) Beutane
Ans- b) Hydrogen.