Q.1 Which planet is known as the 'Red Planet'?
Venus
Mars
Jupiter
Saturn
Explanation - Mars is called the Red Planet because of its iron oxide-rich surface, which gives it a reddish appearance.
Correct answer is: Mars
Q.2 What is the hottest planet in the Solar System?
Mercury
Venus
Mars
Jupiter
Explanation - Venus has a thick carbon dioxide atmosphere that traps heat, making it hotter than Mercury.
Correct answer is: Venus
Q.3 Which galaxy is Earth located in?
Andromeda Galaxy
Whirlpool Galaxy
Milky Way Galaxy
Sombrero Galaxy
Explanation - Earth is part of the Milky Way Galaxy, a barred spiral galaxy.
Correct answer is: Milky Way Galaxy
Q.4 What is the closest star to Earth after the Sun?
Proxima Centauri
Sirius
Alpha Centauri A
Betelgeuse
Explanation - Proxima Centauri, part of the Alpha Centauri star system, is the closest star to Earth beyond the Sun.
Correct answer is: Proxima Centauri
Q.5 Which planet has the most moons?
Saturn
Jupiter
Uranus
Neptune
Explanation - As of recent discoveries, Saturn has the most moons, surpassing Jupiter.
Correct answer is: Saturn
Q.6 What causes the phases of the Moon?
Earth’s shadow
Moon’s rotation
Moon’s orbit around Earth
Sun’s movement
Explanation - The phases occur due to the changing angles of illumination from the Sun as the Moon orbits Earth.
Correct answer is: Moon’s orbit around Earth
Q.7 What is the name of the largest volcano in the Solar System?
Mount Everest
Olympus Mons
Mauna Kea
Vesuvius
Explanation - Olympus Mons is located on Mars and is the largest volcano in the Solar System.
Correct answer is: Olympus Mons
Q.8 Which planet has a day longer than its year?
Venus
Mercury
Mars
Neptune
Explanation - Venus rotates very slowly, taking longer to complete one rotation than one orbit around the Sun.
Correct answer is: Venus
Q.9 What type of galaxy is the Milky Way?
Elliptical
Irregular
Spiral
Lenticular
Explanation - The Milky Way is a barred spiral galaxy with arms curving outward.
Correct answer is: Spiral
Q.10 What is a light-year a measure of?
Time
Brightness
Distance
Speed
Explanation - A light-year is the distance light travels in one year, about 9.46 trillion kilometers.
Correct answer is: Distance
Q.11 Which planet is known for its Great Red Spot?
Mars
Jupiter
Neptune
Saturn
Explanation - The Great Red Spot is a massive storm on Jupiter that has lasted for centuries.
Correct answer is: Jupiter
Q.12 What is the name of our closest large galaxy neighbor?
Whirlpool Galaxy
Andromeda Galaxy
Triangulum Galaxy
Large Magellanic Cloud
Explanation - The Andromeda Galaxy is the closest large galaxy to the Milky Way.
Correct answer is: Andromeda Galaxy
Q.13 What is the main component of the Sun?
Carbon
Oxygen
Hydrogen
Helium
Explanation - The Sun is composed primarily of hydrogen, which undergoes nuclear fusion to form helium.
Correct answer is: Hydrogen
Q.14 What type of celestial object is Pluto classified as?
Planet
Dwarf Planet
Asteroid
Comet
Explanation - Pluto was reclassified as a dwarf planet in 2006 by the International Astronomical Union.
Correct answer is: Dwarf Planet
Q.15 Which planet rotates on its side?
Jupiter
Saturn
Uranus
Neptune
Explanation - Uranus has an axial tilt of about 98 degrees, causing it to rotate on its side.
Correct answer is: Uranus
Q.16 What is the Kuiper Belt?
Region of stars
Asteroid belt beyond Mars
Region of icy bodies beyond Neptune
Satellite field around Jupiter
Explanation - The Kuiper Belt is a region beyond Neptune filled with icy objects and dwarf planets like Pluto.
Correct answer is: Region of icy bodies beyond Neptune
Q.17 What protects Earth from harmful solar radiation?
Ozone Layer
Atmosphere
Magnetic Field
Clouds
Explanation - Earth’s magnetic field deflects charged particles from the Sun, protecting life.
Correct answer is: Magnetic Field
Q.18 Which planet has the fastest rotation in the Solar System?
Earth
Jupiter
Saturn
Neptune
Explanation - Jupiter rotates once every 10 hours, the fastest of all planets.
Correct answer is: Jupiter
Q.19 What is a supernova?
Birth of a star
Death of a star
Explosion of a star
Collision of galaxies
Explanation - A supernova occurs when a massive star explodes at the end of its life cycle.
Correct answer is: Explosion of a star
Q.20 What is the largest planet in the Solar System?
Earth
Jupiter
Saturn
Neptune
Explanation - Jupiter is the largest planet, with a mass more than twice that of all other planets combined.
Correct answer is: Jupiter
Q.21 What are Saturn’s rings mostly made of?
Dust and sand
Ice and rock
Gas and plasma
Molten lava
Explanation - Saturn’s rings are composed mainly of ice particles with some rocky debris.
Correct answer is: Ice and rock
Q.22 What is a black hole?
A planet with no light
A collapsed star with strong gravity
A dark nebula
A space-time tunnel
Explanation - A black hole is formed when a massive star collapses under its own gravity, creating a region where nothing can escape.
Correct answer is: A collapsed star with strong gravity
Q.23 Which planet has the strongest winds in the Solar System?
Jupiter
Neptune
Saturn
Mars
Explanation - Neptune has winds reaching speeds of up to 2,100 km/h, the fastest in the Solar System.
Correct answer is: Neptune
Q.24 Which mission first landed humans on the Moon?
Apollo 11
Apollo 13
Luna 2
Challenger
Explanation - Apollo 11 landed the first humans on the Moon in 1969, with Neil Armstrong as the first person to walk on it.
Correct answer is: Apollo 11
Q.25 What is the name of the largest moon of Jupiter?
Io
Europa
Callisto
Ganymede
Explanation - Ganymede is the largest moon in the Solar System and is even bigger than Mercury.
Correct answer is: Ganymede