Solar System MCQ Quiz - Objective Question with Answer for Solar System - Download Free PDF

The correct answer is ​Mars and Jupiter.

Key Points

• Asteroids
  • Apart from the  planets, and satellites, numerous tiny bodies also move around the sun. These bodies are called asteroids.
  • They are found between the orbits of Mars and Jupiter.
  • Scientists are of the view that asteroids are parts of a planet that exploded many years back.
  • Asteroid Belt is a circumstellar disc in the Solar System.
  • Asteroid Belt is occupied by numerous irregularly shaped bodies called asteroids or minor planets.
  • Four largest asteroids
    • Ceres
    • Vesta
    • Pallas
    • Hygiea
  • Ceres, the asteroid belt's only dwarf planet.
  • Asteroids orbit the Sun and are small bodies on the solar system.
  • They are made up of metals and rocks and also consist of organic compounds.
  • They are similar to comets but don’t have a coma-like comet. 
  • Asteroids tend to have shorter and elliptical orbits.
  • Astronomers have discovered millions of asteroids some that measure hundreds of kilometers across and some as small as dust particles.
  • Asteroids have an elliptical orbit.
  • It is made of metals and rocks.
  • Do not produce a coma or tail atmosphere.
  • The orbital period is 1 to 100 years.

The correct answer is 1-B, 2-A, 3-C, 4-D, 5-E.

Key Points

• Solar Eclipse: The Moon blocks the Sun's light from reaching Earth.
• Lunar Eclipse: The Earth comes between the Sun and the Moon.
• Summer Solstice: The longest day in the Northern Hemisphere.
• Winter Solstice: The shortest day in the Northern Hemisphere.
• Equinox: Day and night are of equal length.

Additional Information

• Solar Eclipse:
  • Occurs when the Moon passes between the Sun and Earth.
  • Can be total, partial, or annular.
  • Only visible in certain areas on Earth.
  • Lasts for a few minutes.
• Lunar Eclipse:
  • Occurs when Earth passes between the Sun and the Moon.
  • Can be total, partial, or penumbral.
  • Visible from anywhere on Earth where it is nighttime.
  • Lasts for a few hours.
• Summer Solstice:
  • Occurs around June 21 in the Northern Hemisphere.
  • The Sun reaches its highest point in the sky at noon.
  • Marks the start of summer.
  • Longest day of the year.
• Winter Solstice:
  • Occurs around December 21 in the Northern Hemisphere.
  • The Sun reaches its lowest point in the sky at noon.
  • Marks the start of winter.
  • Shortest day of the year.
• Equinox:
  • Occurs twice a year, around March 21 and September 23.
  • The Sun is directly above the equator.
  • Day and night are approximately equal in length.
  • Marks the start of spring and autumn.

The correct answer is option 1 i.e Corona.

Key Points

• Corona is the outermost layer of the Sun.
  • It experiences a very high temperature, about one million degrees Celcius.
  • It starts at about 2100 km above the photosphere.
  • Corona isn't visible from the earth (except during solar eclipse).
  • The corona does not have an upper limit.
• Photosphere, the Chromosphere, the Transition Region, and the Corona are the outer layers of the sun.
• Granules on the sun's photosphere are due to the convection currents of plasma within the Sun's convective zone.

Important Points

The correct answer is Venus.

Important Points

• Jupiter:
  • Jupiter is the planet, orange in color with white bands on it.
  • Jupiter is the largest planet in the Solar System.
  • It is also known as winter planet as its average temperature is very low.
  • Jupiter's atmosphere is mostly made up of hydrogen (H₂) and helium (He).
  • Gannymeda, satellite of Jupiter is the largest satellite in the solar system.
• Mars:
  • Mars is reddish in color.
  • Mars is also known as the Red Planet.
  • It is red in color due to the presence of Iron Oxides.
  • Mars has two moons named Phobos and Deimos.
• Venus: 
  • Venus is Earth's twin in size.
  • Venus is the hottest planet in our Solar System.
  • It is the brightest planet in the Solar System.
  • It is also sometimes referred to as the sister planet to Earth, due to their near similarity of size and mass.
  • Venus is referred to as the “morning star” and “evening star”.
  • It is surrounded by a thick cloud cover, hence known as the Veiled Planet.
  • It is the second planet from the Sun.
  • It also rotates clockwise on its axis like Uranus.
• Uranus:
  • It is about four times the size of the Earth.
  • It appears greenish in color due to the presence of methane gas in its atmosphere.
  • It is the seventh planet from the Sun.
  • It is the third biggest planet in the Solar System.
  • It rotates clockwise i.e from east to west on its axis, which is opposite to other planets except for Venus.
  • The axis of Uranus has a large inclination so that it appears to be lying down, hence it bears the name 'A Planet on its Side'.

The correct answer is Uranus.

Key Points

• Uranus is the seventh planet from the Sun in our solar system.
• The planet is surrounded by a set of faint rings composed primarily of methane ice and dust.
• Uranus has a total of 13 rings, which were discovered in 1977.
• The rings of Uranus are much darker than those of Saturn, reflecting only a few percent of the sunlight that falls on them.
• These rings are thought to be relatively young, possibly formed from the debris of colliding moons.

Additional Information

• Composition of Uranus:
  • Uranus is an ice giant composed mainly of hydrogen, helium, and methane.
  • The methane in Uranus's atmosphere gives the planet its blue-green color.
  • The planet has a small rocky core surrounded by an icy mantle.
• Uranus's Moons:
  • Uranus has 27 known moons, with the largest ones being Titania, Oberon, Ariel, Umbriel, and Miranda.
  • These moons are named after characters from the works of William Shakespeare and Alexander Pope.
• Axial Tilt:
  • Uranus has an extreme axial tilt of about 98 degrees.
  • This tilt causes it to rotate on its side, making its poles experience prolonged periods of sunlight and darkness.
• Discovery:
  • Uranus was discovered by astronomer William Herschel on March 13, 1781.
  • This discovery expanded the known boundaries of our solar system at the time.

The correct answer is ​Mars and Jupiter.

Key Points

• Asteroids
  • Apart from the  planets, and satellites, numerous tiny bodies also move around the sun. These bodies are called asteroids.
  • They are found between the orbits of Mars and Jupiter.
  • Scientists are of the view that asteroids are parts of a planet that exploded many years back.
  • Asteroid Belt is a circumstellar disc in the Solar System.
  • Asteroid Belt is occupied by numerous irregularly shaped bodies called asteroids or minor planets.
  • Four largest asteroids
    • Ceres
    • Vesta
    • Pallas
    • Hygiea
  • Ceres, the asteroid belt's only dwarf planet.
  • Asteroids orbit the Sun and are small bodies on the solar system.
  • They are made up of metals and rocks and also consist of organic compounds.
  • They are similar to comets but don’t have a coma-like comet. 
  • Asteroids tend to have shorter and elliptical orbits.
  • Astronomers have discovered millions of asteroids some that measure hundreds of kilometers across and some as small as dust particles.
  • Asteroids have an elliptical orbit.
  • It is made of metals and rocks.
  • Do not produce a coma or tail atmosphere.
  • The orbital period is 1 to 100 years.

The correct answer is Venus.

• Venus is made up of thick white and yellowish clouds of sulfuric acid.

Key Points

• Venus:
  • The planet is nearest to the Earth and is also the brightest planet.
  • Venus is known as the “Evening Star” as well as “Morning Star”.
  • Known as the “Veiled Planet”.
  • Also known as the “Earth’s twin”. It also rotates clockwise like Uranus.
  • Venus is the hottest planet (even hotter than Mercury).
  • Venus has no water on it. There is no sufficient oxygen on Venus.

Additional Information Mercury, Venus, Earth and Mars are called terrestrial planets.

• Jupiter, Saturn, Uranus and Neptune are called gaseous planets.
• Uranus is about four times the size of the Earth.
  • This planet appears Greenish in colour because of methane gas present in its atmosphere.
• Neptune is surrounded by methane rings of sub-zero temperature.

The correct answer is Venus.

Important Points

• Jupiter:
  • Jupiter is the planet, orange in color with white bands on it.
  • Jupiter is the largest planet in the Solar System.
  • It is also known as winter planet as its average temperature is very low.
  • Jupiter's atmosphere is mostly made up of hydrogen (H₂) and helium (He).
  • Gannymeda, satellite of Jupiter is the largest satellite in the solar system.
• Mars:
  • Mars is reddish in color.
  • Mars is also known as the Red Planet.
  • It is red in color due to the presence of Iron Oxides.
  • Mars has two moons named Phobos and Deimos.
• Venus: 
  • Venus is Earth's twin in size.
  • Venus is the hottest planet in our Solar System.
  • It is the brightest planet in the Solar System.
  • It is also sometimes referred to as the sister planet to Earth, due to their near similarity of size and mass.
  • Venus is referred to as the “morning star” and “evening star”.
  • It is surrounded by a thick cloud cover, hence known as the Veiled Planet.
  • It is the second planet from the Sun.
  • It also rotates clockwise on its axis like Uranus.
• Uranus:
  • It is about four times the size of the Earth.
  • It appears greenish in color due to the presence of methane gas in its atmosphere.
  • It is the seventh planet from the Sun.
  • It is the third biggest planet in the Solar System.
  • It rotates clockwise i.e from east to west on its axis, which is opposite to other planets except for Venus.
  • The axis of Uranus has a large inclination so that it appears to be lying down, hence it bears the name 'A Planet on its Side'.

The correct answer is Mercury.

Key Points

• The first four planets are called  Terrestrial, meaning earth-like planets like Mercury, Venus, Earth, and Mars.
• They are also called inner planets.
• They lie between the sun and the belt of asteroids.
• They are made up of rock and metals and have relatively high densities.
• The terrestrial planets were formed in the close vicinity of the parent star where it was too warm for gases to condense to solid particles.
• The terrestrial planets are smaller and their lower gravity could not hold the escaping gases. 
• Other than them the planets are called jovian or giant planets like Jupiter, Saturn, Uranus, and Neptune.
  • They are also called the outer planets.
  • Most of them are much larger than the terrestrial planets and have a thick atmosphere, mostly of helium and hydrogen.
  • The solar winds were not all that intense to cause the removal of gases from the Jovian planets.​ 

Additional Information

Inner or Terrestrial planets: 

1. Mercury
2. Venus
3. Earth
4. Mars

1. Jupiter
2. Saturn
3. Uranus
4. Neptune

• My Very Excited Mother Just Served Us Nachos
• M →  Mercury, V → Venus, E → Earth, M → Mars, J → Jupiter, S → Saturn, U → Uranus, N → Neptune

Saturn is an outer planet of the solar system. It is the sixth planet from the sun and is known for its beautiful rings. Outer planets, also called gas giants, are primarily composed of gas and have thick atmospheres. They are located beyond the asteroid belt and include Jupiter, Saturn, Uranus, and Neptune.

The correct answer is Earth.

Key Points

• Among the given options Earth has the shortest day.
• A day is the length of time that a planet takes for the Sun to move from the noon position in the sky at a point on the equator to the same spot.
• Earth has 24 hours per day.
• Mars has approx 25 hours per day.
• Mercury has 1408 hours per day.
• Venus has 5832 hours per day.
• The planet that has the longest day is Venus. 
• The planet Jupiter has the shortest day of all the eight major planets in the Solar System. It spins around on its axis once every 9 hr 55 min 29.69 sec. 

Additional Information

The correct answer is ​Ceres.

Key Points

• The asteroid belt is a circumstellar disc in the Solar System.
• The asteroid belt is occupied by numerous irregularly shaped bodies called asteroids or minor planets.
• Ceres is the asteroid belt's only dwarf planet.
• Asteroids orbit the Sun and are small bodies in the solar system.
• They are made up of metals and rocks and also consist of organic compounds.
• They are found between the orbits of Mars and Jupiter.
• Four largest asteroids
  • Ceres
  • Vesta
  • Pallas
  • Hygiea

The correct answer is Venus.

Key Points

• Planetary surface temperatures tend to get colder the farther a planet is from the Sun.
• Venus is the exception, as its proximity to the Sun and dense atmosphere make it our solar system's hottest planet.

Additional Information

• Venus is the second planet from the Sun and our closest planetary neighbour.
  • Its thick atmosphere traps heat in a runaway greenhouse effect, making it the hottest planet in our solar system with surface temperatures hot enough to melt lead.
• The Solar System is about 4.6 billion years old.
• Jupiter is the largest planet in the Solar System.
  • It is the fifth planet from the Sun.
  • Jupiter is a gas giant, both because it is so large and made up of gas. 
• Earth is a terrestrial planet.
  • It is the third planet from the Sun.
  • It is the only planet known to have life on it.
  • The Earth formed around 4.5 billion years ago.
• Neptune has four rings which are hard to see from the Earth.
  • It is seventeen times heavier than Earth and is a little bit heavier than Uranus.
  • It was named after the Roman God of the Sea.

• There are many different types of objects found in the solar system: a star, planets, moons, dwarf planets, comets, asteroids, gas, and dust.
  • 1 star (The Sun)
  • 8 planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune)
  • 5 dwarf planets (Pluto, Ceres, Haumea, Makemake, and Eris)
  • 181 moons
  • 566,000 asteroids
  • 3,100 comets

The correct answer is option 1 i.e Corona.

Key Points

• Corona is the outermost layer of the Sun.
  • It experiences a very high temperature, about one million degrees Celcius.
  • It starts at about 2100 km above the photosphere.
  • Corona isn't visible from the earth (except during solar eclipse).
  • The corona does not have an upper limit.
• Photosphere, the Chromosphere, the Transition Region, and the Corona are the outer layers of the sun.
• Granules on the sun's photosphere are due to the convection currents of plasma within the Sun's convective zone.

Important Points

The correct answer is 'Venus''.

Key Points

• Thus, the correct answer is Venus.

Additional Information

• Venus
  • ​Venus is the second planet from the Sun.
  • It is the brightest planet.
  • It is called Earth's Sister Planet or Twin Planet.

Confusion Points

• Venus is entirely covered with a thick carbon dioxide atmosphere and sulphuric acid clouds which give it a light yellowish appearance.
• Jupiter is a giant gas planet with an outer atmosphere that is mostly hydrogen and helium with small amounts of water droplets, ice crystals, ammonia crystals, and other elements. Clouds of these elements create shades of white, orange, brown and red.