Q1. Which planet is known as the “Red Planet”?
a) Venus
b) Mars
c) Jupiter
d) Saturn
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Correct Answer: b) Mars
Explanation: Mars is often called the “Red Planet” due to its reddish appearance, caused by iron oxide (rust) on its surface.
Q2. What is the largest moon in the Solar System?
a) Europa
b) Ganymede
c) Titan
d) Io
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Correct Answer: b) Ganymede
Explanation: Ganymede, one of Jupiter’s moons, is the largest moon in the Solar System, even larger than the planet Mercury.
Q3. What is the name of the largest asteroid in the Solar System?
a) Vesta
b) Ceres
c) Pallas
d) Eros
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Correct Answer: b) Ceres
Explanation: Ceres is the largest asteroid in the Solar System and is classified as a dwarf planet.
Q4. Which planet has the most extensive system of rings?
a) Saturn
b) Jupiter
c) Uranus
d) Neptune
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Correct Answer: a) Saturn
Explanation: Saturn has the most extensive system of rings, composed of ice and dust particles orbiting the planet’s equator.
Q5. Which planet has the highest average surface temperature in the Solar System?
a) Venus
b) Mercury
c) Earth
d) Mars
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Correct Answer: a) Venus
Explanation: Venus has the highest average surface temperature due to its thick atmosphere, which traps heat from the Sun.
Q6. Which planet is known for its prominent Great Red Spot, a persistent storm system?
a) Jupiter
b) Saturn
c) Uranus
d) Neptune
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Correct Answer: a) Jupiter
Explanation: Jupiter is known for its Great Red Spot, a persistent storm system that has been observed for centuries.
Q7. Which spacecraft was the first to land humans on the Moon?
a) Apollo 11
b) Voyager 1
c) Viking 1
d) Mercury-Redstone 3
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Correct Answer: a) Apollo 11
Explanation: Apollo 11 was the spacecraft that successfully landed humans on the Moon on July 20, 1969.
Q8. Which planet is known for its prominent rings made up of dark particles?
a) Saturn
b) Jupiter
c) Uranus
d) Neptune
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Correct Answer: c) Uranus
Explanation: Uranus is known for its faint and dark-colored rings, composed of smaller particles compared to Saturn’s rings.
Q9. What is the largest planet in the Solar System?
a) Saturn
b) Jupiter
c) Neptune
d) Uranus
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Correct Answer: b) Jupiter
Explanation: Jupiter is the largest planet in the Solar System, with a diameter more than 11 times that of Earth.
Q10. Which moon of Saturn is known for its icy surface and subsurface ocean that may harbor life?
a) Titan
b) Enceladus
c) Mimas
d) Tethys
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Correct Answer: b) Enceladus
Explanation: Enceladus, one of Saturn’s moons, has an icy surface and subsurface ocean that may contain conditions suitable for life.
Q11. Which spacecraft was the first to orbit Jupiter and study its moons?
a) Voyager 1
b) Galileo
c) Cassini
d) New Horizons
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Correct Answer: b) Galileo
Explanation: The Galileo spacecraft was the first to orbit Jupiter and study its moons, providing valuable data about the Jovian system.
Q12. Which planet has the most moons in the Solar System?
a) Saturn
b) Jupiter
c) Uranus
d) Neptune
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Correct Answer: b) Jupiter
Explanation: Jupiter has the most moons in the Solar System, with over 80 known moons orbiting the planet.
Q13. What is the name of the spacecraft that provided the first close-up images of Pluto?
a) New Horizons
b) Voyager 1
c) Cassini
d) Hubble Space Telescope
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Correct Answer: a) New Horizons
Explanation: The New Horizons spacecraft provided the first close-up images of Pluto during its flyby in July 2015.
Q14. Which moon of Saturn is known for its dense atmosphere and orange haze layer?
a) Titan
b) Enceladus
c) Dione
d) Rhea
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Correct Answer: a) Titan
Explanation: Titan, Saturn’s largest moon, has a dense atmosphere primarily composed of nitrogen, with an orange haze layer.
Q15. What is the name of the spacecraft that successfully landed on the surface of Mars in 2021?
a) Perseverance
b) Curiosity
c) Opportunity
d) Spirit
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Correct Answer: a) Perseverance
Explanation: The Perseverance rover successfully landed on the surface of Mars on February 18, 2021, as part of NASA’s Mars 2020 mission.
Q16. Which moon of Jupiter is known for its subsurface ocean and potential for harboring life?
a) Ganymede
b) Europa
c) Callisto
d) Io
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Correct Answer: b) Europa
Explanation: Europa, one of Jupiter’s moons, has a subsurface ocean beneath its icy crust, making it a target for astrobiological studies.
Q17. Which spacecraft was the first to visit Pluto and its moons?
a) Voyager 1
b) New Horizons
c) Cassini
d) Juno
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Correct Answer: b) New Horizons
Explanation: The New Horizons spacecraft was the first to visit Pluto and its moons, providing valuable data about these distant objects in the Solar System.
Q18. What is the name of the largest moon of Neptune?
a) Triton
b) Nereid
c) Proteus
d) Larissa
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Correct Answer: a) Triton
Explanation: Triton is the largest moon of Neptune and is believed to be a captured Kuiper Belt object.
Q19. Which planet has the shortest orbital period around the Sun?
a) Mercury
b) Venus
c) Earth
d) Mars
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Correct Answer: a) Mercury
Explanation: Mercury has the shortest orbital period around the Sun, completing one orbit approximately every 88 Earth days.
Q20. Which moon of Saturn has a prominent equatorial ridge making it resemble a walnut?
a) Iapetus
b) Hyperion
c) Phoebe
d) Pan
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Correct Answer: a) Iapetus
Explanation: Iapetus, one of Saturn’s moons, has a prominent equatorial ridge that gives it a distinctive walnut-like appearance. A ridge that follows the equator of Saturn’s moon Iapetus gives it the appearance of a giant walnut. The ridge, photographed in 2004 by the Cassini spacecraft, is 100 kilometers (62 miles) wide and at times 20 kilometers (12 miles) high.