Here are MCQs based on Class 6 Geography – Chapter 1: The Earth in the Solar System
Q. Which of the following is a key characteristic of the Full Moon phase?
A) The Moon is not visible
B) The Moon appears half-illuminated
C) The Moon appears completely illuminated
D) The Moon appears crescent-shaped
Answer: C) The Moon appears completely illuminated
Explanation: During the Full Moon, the entire visible hemisphere of the Moon reflects sunlight toward Earth.
Q. Poornima refers to which phase of the Moon?
A) New Moon
B) Half Moon
C) Full Moon
D) Crescent Moon
Answer: C) Full Moon
Explanation: Poornima means the Full Moon Day when the entire visible face of the Moon is illuminated.
Q. Which is the main characteristic of a New Moon?
A) The Moon is fully visible
B) The Moon is completely dark from Earth
C) Half of the Moon is visible
D) The Moon looks crescent-shaped
Answer: B) The Moon is completely dark from Earth
Explanation: During a New Moon, the illuminated side faces away from Earth, making the Moon invisible.
Q. A Full Moon occurs when:
A) Moon is between Earth and Sun
B) Earth is between Sun and Moon
C) Sun is between Earth and Moon
D) Moon is at 90° with respect to Earth and Sun
Answer: B) Earth is between Sun and Moon
Explanation: This alignment makes the Moon’s surface appear fully bright from Earth.
Q. A New Moon occurs when:
A) Earth is between the Sun and the Moon
B) Moon is between Earth and Sun
C) Sun is between Earth and Moon
D) Moon is at 90° with respect to Earth and Sun
Answer: B) Moon is between Earth and Sun
Explanation: In this alignment, the Sun lights up the side of the Moon we cannot see.
Q. Amavasya refers to which phase of the Moon?
A) Full Moon
B) New Moon
C) Half Moon
D) Crescent Moon
Answer: B) New Moon
Explanation: Amavasya means New Moon Day, when the Moon is not visible from Earth.
Q. What is a celestial body?
a) A ball of fire
b) Any object in space
c) Only planets
d) Only stars
Answer: b) Any object in space
Explanation: Celestial bodies include planets, stars, moons, asteroids, and other objects in space.
Q. Which celestial body is the closest to the Earth?
a) Mars
b) Sun
c) Moon
d) Venus
Answer: c) Moon
Explanation: The Moon is Earth’s only natural satellite and is the closest celestial body to Earth.
Q. Which of the following best defines a star?
A) A celestial body that reflects sunlight
B) A celestial body that produces its own light and heat
C) A celestial body that always orbits a planet
D) A celestial body made only of rocks
Answer: B) A celestial body that produces its own light and heat by nuclear fusion
Q. The Sun is a ________.
a) Planet
b) Satellite
c) Star
d) Asteroid
Answer: c) Star
Q. Which is the closest star to Earth?
A) Polaris
B) Sirius
C) Proxima Centauri
D) The Sun
Answer: D) The Sun
Q. What is the average distance of the Sun from the Earth?
A) 15 million km
B) 50 million km
C) 150 million km
D) 1.5 billion km
Answer: C) 150 million km
Q. Which of the following statements about the Sun is correct?
A) The Sun is a planet.
B) The Sun is a star made up mainly of hydrogen and helium.
C) The Sun is the largest planet in the Solar System.
D) The Sun revolves around the Earth.
Answer: B) The Sun is a star made up mainly of hydrogen and helium.
Q. The Sun is the ultimate source of energy for:
A) Plants only
B) Animals only
C) All life forms on Earth
D) Oceans only
Answer: C) All life forms on Earth
Q. How is a star different from a planet?
A) Stars are smaller than planets
B) Stars produce their own light, planets reflect the light of stars
C) Stars are colder than planets
D) Stars revolve around planets
Answer: B) Stars produce their own light, planets reflect the light of stars
Q. What are constellations?
a) Groups of planets
b) Groups of stars forming patterns
c) Groups of galaxies
d) Groups of satellites
Answer: b) Groups of stars forming patterns
Q. Which of the following statements is true?
A) The Pole Star is the brightest star in the sky
B) The Pole Star lies in the southern hemisphere
C) The Pole Star is always in the same position
D) The Pole Star changes position every few hours
Answer: C) The Pole Star is always in the same position
Q. What is an asteroid?
a) A type of satellite
b) A small rocky body orbiting the Sun
c) A satellite of Mars
d) A planet
Answer: b) A small rocky body orbiting the Sun
Explanation: Asteroids are rocky objects found mostly in the asteroid belt between Mars and Jupiter.
Q. What are the small, icy objects that revolve around the Sun called?
a) Asteroids
b) Meteoroids
c) Comets
d) Planets
Answer: c) Comets
Explanation: Comets are made of ice, dust, and gas and have a bright glowing tail when they approach the Sun.
Q. What do you call a group of billions of stars, planets, and gases held together by gravity?
a) Galaxy
b) Constellation
c) Universe
d) Orbit
Answer: a) Galaxy
Explanation: A galaxy is a system of stars, planets, and other celestial objects bound by gravity. Our galaxy is the Milky Way.
Q. What is the Milky Way?
a) A constellation
b) A planet
c) A galaxy
d) A star
Answer: c) A galaxy
Q. Our solar system belongs to which galaxy?
A) Sombrero Galaxy
B) Milky Way
C) Andromeda
D) Black Eye Galaxy
Answer: B
Q. The Milky Way is known in India as:
A) Chandrayan
B) Akash Ganga
C) Jal Samudra
D) Jyotir Path
Answer: B
Q. Which one of the following pairs is correctly matched?
1. Meteoroid – Small rocky body in space
2. Meteor – When it enters Earth’s atmosphere and burns up
3. Meteorite – When it reaches Earth’s surface
Options:
A) 1 only
B) 1 and 2 only
C) 1 and 3 only
D) 1, 2 and 3
Answer: D) 1, 2 and 3
Q. The shape of Earth is
A) Sphere
B) Circle
C) Geoid
D) Hemisphere
Answer: C) Geoid
Q. Which of the following makes Earth suitable for life?
A) Presence of water
B) Suitable temperature
C) Atmosphere with oxygen
D) All of the above
Answer: D) All of the above
Q. What causes day and night on Earth?
a) Revolution
b) Rotation
c) Tilt of the axis
d) Gravitational pull
Answer: b) Rotation
Explanation: The Earth rotates on its axis, causing different parts of the planet to experience day and night.
Q. Which one of the following pairs is correctly matched?
1. Meteoroid – Small rocky body in space
2. Meteor – When it enters Earth’s atmosphere and burns up
3. Meteorite – When it reaches Earth’s surface
Options:
A) 1 only
B) 1 and 2 only
C) 1 and 3 only
D) 1, 2 and 3
Answer: D) 1, 2 and 3
Q. How many planets are there in the Solar System?
a) 8
b) 9
c) 10
d) 7
Answer: a) 8
Explanation: The Solar System has 8 planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Q. Which of these is NOT a planet in the Solar System?
a) Mercury
b) Pluto
c) Neptune
d) Earth
Answer: b) Pluto
Explanation: Pluto was reclassified as a “dwarf planet” in 2006 by the International Astronomical Union.
Q. What is the full form of IAU?
a) Indian Astronomical Union
b) International Association of Universe
c) International Astronomical Union
d) Institute of Astronomy and Universe
Answer: c) International Astronomical Union
Explanation: IAU is the global authority that classifies celestial bodies.
Q. Which planet is known as the ‘Red Planet’?
a) Jupiter
b) Venus
c) Mars
d) Saturn
Answer: c) Mars
Explanation: Mars appears red due to the presence of iron oxide (rust) on its surface.
Q. Which planet is known as the ‘Blue Planet’?
a) Jupiter
b) Earth
c) Mars
d) Saturn
Answer: b) Earth
Q. What is the brightest planet in the night sky?
a) Mars
b) Venus
c) Mercury
d) Jupiter
Answer: b) Venus
Q. Which is the largest planet in the Solar System?
a) Earth
b) Saturn
c) Jupiter
d) Neptune
Answer: c) Jupiter.
Q. Which planet is closest to the Sun?
a) Earth
b) Venus
c) Mercury
d) Mars
Answer: c) Mercury
Q. The nearest star to Earth is:
A) Pole Star
B) Proxima Centauri
C) Sun
D) Sirius
Answer: C
Q. The Asteroid Belt lies between:
A) Earth & Mars
B) Mars & Jupiter
C) Jupiter & Saturn
D) Mercury & Venus
Answer: B) Mars & Jupiter
Q. The path on which planets revolve around the Sun is called?
a) Rotation
b) Axis
c) Orbit
d) Equator
Answer: c) Orbit
Explanation: Planets follow a fixed elliptical path around the Sun, known as an orbit.
Q. Which planet has the longest day (slowest rotation)?
A) Mercury
B) Venus
C) Saturn
D) Neptune
Answer: B) Venus
Q. Which planet is known as the “morning star” and “evening star”?
A) Mars
B) Venus
C) Mercury
D) Saturn
Answer: B) Venus
Q. Which planet is known as Earth’s twin?
a) Mars
b) Venus
c) Neptune
d) Saturn
Answer: b) Venus
Explanation: Venus is called Earth’s twin because of its similar size and structure.
Q. Which planet takes the longest time to orbit the Sun?
a) Uranus
b) Neptune
c) Saturn
d) Jupiter
Answer: b) Neptune
Explanation: Neptune takes about 164 Earth years to complete one orbit around the Sun.
Q. The Sun is mostly made of which gas?
a) Oxygen
b) Carbon
c) Hydrogen
d) Nitrogen
Answer: c) Hydrogen
Explanation: The Sun is composed mainly of hydrogen, which undergoes nuclear fusion to produce energy.
Q. Arrange the planets of the Solar System in decreasing order of their size (diameter).
A) Jupiter > Saturn > Uranus > Neptune > Earth > Venus > Mars > Mercury
B) Saturn > Jupiter > Neptune > Uranus > Earth > Venus > Mars > Mercury
C) Jupiter > Neptune > Uranus > Saturn > Earth > Venus > Mars > Mercury
D) Jupiter > Saturn > Earth > Venus > Uranus > Neptune > Mars > Mercury
Answer: A) Jupiter > Saturn > Uranus > Neptune > Earth > Venus > Mars > Mercury
Q. Arrange the planets according to their distance from the Sun (closest to farthest).
A) Mercury > Venus > Earth > Mars > Jupiter > Saturn > Uranus > Neptune
B) Venus > Mercury > Earth > Mars > Jupiter > Saturn > Uranus > Neptune
C) Mercury > Venus > Mars > Earth > Jupiter > Saturn > Neptune > Uranus
D) Mercury > Earth > Venus > Mars > Jupiter > Saturn > Uranus > Neptune
Answer: A) Mercury > Venus > Earth > Mars > Jupiter > Saturn > Uranus > Neptune
Q. Who was the first man to step on the surface of the Moon?
A) Yuri Gagarin
B) Neil Armstrong
C) Buzz Aldrin
D) Rakesh Sharma
Answer: B) Neil Armstrong
Q. What is the speed of light in vacuum?
A) 3,000 km/s
B) 30,000 km/s
C) 3,00,000 km/s
D) 3,000,000 km/s
Answer: C) 3,00,000 km/s
Q. What is a satellite?
A) A star that shines on its own
B) A body that revolves around a planet
C) A planet that revolves around the Sun
D) A comet moving in space
Answer: B) A body that revolves around a planet
Q. Which of the following is an example of a natural satellite?
A) INSAT-3C
B) Aryabhata
C) The Moon
D) Hubble Space Telescope
Answer: C) The Moon
Q. The Moon is an example of:
A) Artificial satellite
B) Natural satellite
C) Communication satellite
D) Navigational satellite
Answer: B) Natural satellite
Q. The diameter of the Moon compared to the Earth is about:
A) 1/2 of Earth
B) 1/3 of Earth
C) 1/4 of Earth
D) 1/10 of Earth
Answer: C) 1/4 of Earth
Q. The average distance of the Moon from Earth is about:
A) 38,000 km
B) 3,84,000 km
C) 38,00,000 km
D) 38 km
Answer: B) 3,84,000 km
Q. The Moon completes one revolution around the Earth in:
A) 7 days
B) 14 days
C) 27⅓ days
D) 365 days
Answer: C) 27⅓ days
Explanation: The Moon takes about 27.3 days to complete one orbit (sidereal period).
Q. The Moon takes the same time to rotate on its axis as it does to revolve around Earth. This is:
A) 24 hours
B) 27⅓ days
C) 365 days
D) 30 minutes
Answer: B) 27⅓ days
Here are MCQs based on Class 6 Geography – Chapter 1: The Earth in the Solar System
Q. Which of the following is a key characteristic of the Full Moon phase?
A) The Moon is not visible
B) The Moon appears half-illuminated
C) The Moon appears completely illuminated
D) The Moon appears crescent-shaped
Answer: C) The Moon appears completely illuminated
Explanation: During the Full Moon, the entire visible hemisphere of the Moon reflects sunlight toward Earth.
Q. Poornima refers to which phase of the Moon?
A) New Moon
B) Half Moon
C) Full Moon
D) Crescent Moon
Answer: C) Full Moon
Explanation: Poornima means the Full Moon Day when the entire visible face of the Moon is illuminated.
Q. Which is the main characteristic of a New Moon?
A) The Moon is fully visible
B) The Moon is completely dark from Earth
C) Half of the Moon is visible
D) The Moon looks crescent-shaped
Answer: B) The Moon is completely dark from Earth
Explanation: During a New Moon, the illuminated side faces away from Earth, making the Moon invisible.
Q. A Full Moon occurs when:
A) Moon is between Earth and Sun
B) Earth is between Sun and Moon
C) Sun is between Earth and Moon
D) Moon is at 90° with respect to Earth and Sun
Answer: B) Earth is between Sun and Moon
Explanation: This alignment makes the Moon’s surface appear fully bright from Earth.
Q. A New Moon occurs when:
A) Earth is between the Sun and the Moon
B) Moon is between Earth and Sun
C) Sun is between Earth and Moon
D) Moon is at 90° with respect to Earth and Sun
Answer: B) Moon is between Earth and Sun
Explanation: In this alignment, the Sun lights up the side of the Moon we cannot see.
Q. Amavasya refers to which phase of the Moon?
A) Full Moon
B) New Moon
C) Half Moon
D) Crescent Moon
Answer: B) New Moon
Explanation: Amavasya means New Moon Day, when the Moon is not visible from Earth.
Q. What is a celestial body?
a) A ball of fire
b) Any object in space
c) Only planets
d) Only stars
Answer: b) Any object in space
Explanation: Celestial bodies include planets, stars, moons, asteroids, and other objects in space.
Q. Which celestial body is the closest to the Earth?
a) Mars
b) Sun
c) Moon
d) Venus
Answer: c) Moon
Explanation: The Moon is Earth’s only natural satellite and is the closest celestial body to Earth.
Q. Which of the following best defines a star?
A) A celestial body that reflects sunlight
B) A celestial body that produces its own light and heat
C) A celestial body that always orbits a planet
D) A celestial body made only of rocks
Answer: B) A celestial body that produces its own light and heat by nuclear fusion
Q. The Sun is a ________.
a) Planet
b) Satellite
c) Star
d) Asteroid
Answer: c) Star
Q. Which is the closest star to Earth?
A) Polaris
B) Sirius
C) Proxima Centauri
D) The Sun
Answer: D) The Sun
Q. What is the average distance of the Sun from the Earth?
A) 15 million km
B) 50 million km
C) 150 million km
D) 1.5 billion km
Answer: C) 150 million km
Q. Which of the following statements about the Sun is correct?
A) The Sun is a planet.
B) The Sun is a star made up mainly of hydrogen and helium.
C) The Sun is the largest planet in the Solar System.
D) The Sun revolves around the Earth.
Answer: B) The Sun is a star made up mainly of hydrogen and helium.
Q. The Sun is the ultimate source of energy for:
A) Plants only
B) Animals only
C) All life forms on Earth
D) Oceans only
Answer: C) All life forms on Earth
Q. How is a star different from a planet?
A) Stars are smaller than planets
B) Stars produce their own light, planets reflect the light of stars
C) Stars are colder than planets
D) Stars revolve around planets
Answer: B) Stars produce their own light, planets reflect the light of stars
Q. What are constellations?
a) Groups of planets
b) Groups of stars forming patterns
c) Groups of galaxies
d) Groups of satellites
Answer: b) Groups of stars forming patterns
Q. Which of the following statements is true?
A) The Pole Star is the brightest star in the sky
B) The Pole Star lies in the southern hemisphere
C) The Pole Star is always in the same position
D) The Pole Star changes position every few hours
Answer: C) The Pole Star is always in the same position
Q. What is an asteroid?
a) A type of satellite
b) A small rocky body orbiting the Sun
c) A satellite of Mars
d) A planet
Answer: b) A small rocky body orbiting the Sun
Explanation: Asteroids are rocky objects found mostly in the asteroid belt between Mars and Jupiter.
Q. What are the small, icy objects that revolve around the Sun called?
a) Asteroids
b) Meteoroids
c) Comets
d) Planets
Answer: c) Comets
Explanation: Comets are made of ice, dust, and gas and have a bright glowing tail when they approach the Sun.
Q. What do you call a group of billions of stars, planets, and gases held together by gravity?
a) Galaxy
b) Constellation
c) Universe
d) Orbit
Answer: a) Galaxy
Explanation: A galaxy is a system of stars, planets, and other celestial objects bound by gravity. Our galaxy is the Milky Way.
Q. What is the Milky Way?
a) A constellation
b) A planet
c) A galaxy
d) A star
Answer: c) A galaxy
Q. Our solar system belongs to which galaxy?
A) Sombrero Galaxy
B) Milky Way
C) Andromeda
D) Black Eye Galaxy
Answer: B
Q. The Milky Way is known in India as:
A) Chandrayan
B) Akash Ganga
C) Jal Samudra
D) Jyotir Path
Answer: B
Q. Which one of the following pairs is correctly matched?
1. Meteoroid – Small rocky body in space
2. Meteor – When it enters Earth’s atmosphere and burns up
3. Meteorite – When it reaches Earth’s surface
Options:
A) 1 only
B) 1 and 2 only
C) 1 and 3 only
D) 1, 2 and 3
Answer: D) 1, 2 and 3
Q. The shape of Earth is
A) Sphere
B) Circle
C) Geoid
D) Hemisphere
Answer: C) Geoid
Q. Which of the following makes Earth suitable for life?
A) Presence of water
B) Suitable temperature
C) Atmosphere with oxygen
D) All of the above
Answer: D) All of the above
Q. What causes day and night on Earth?
a) Revolution
b) Rotation
c) Tilt of the axis
d) Gravitational pull
Answer: b) Rotation
Explanation: The Earth rotates on its axis, causing different parts of the planet to experience day and night.
Q. Which one of the following pairs is correctly matched?
1. Meteoroid – Small rocky body in space
2. Meteor – When it enters Earth’s atmosphere and burns up
3. Meteorite – When it reaches Earth’s surface
Options:
A) 1 only
B) 1 and 2 only
C) 1 and 3 only
D) 1, 2 and 3
Answer: D) 1, 2 and 3
Q. How many planets are there in the Solar System?
a) 8
b) 9
c) 10
d) 7
Answer: a) 8
Explanation: The Solar System has 8 planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Q. Which of these is NOT a planet in the Solar System?
a) Mercury
b) Pluto
c) Neptune
d) Earth
Answer: b) Pluto
Explanation: Pluto was reclassified as a “dwarf planet” in 2006 by the International Astronomical Union.
Q. What is the full form of IAU?
a) Indian Astronomical Union
b) International Association of Universe
c) International Astronomical Union
d) Institute of Astronomy and Universe
Answer: c) International Astronomical Union
Explanation: IAU is the global authority that classifies celestial bodies.
Q. Which planet is known as the ‘Red Planet’?
a) Jupiter
b) Venus
c) Mars
d) Saturn
Answer: c) Mars
Explanation: Mars appears red due to the presence of iron oxide (rust) on its surface.
Q. Which planet is known as the ‘Blue Planet’?
a) Jupiter
b) Earth
c) Mars
d) Saturn
Answer: b) Earth
Q. What is the brightest planet in the night sky?
a) Mars
b) Venus
c) Mercury
d) Jupiter
Answer: b) Venus
Q. Which is the largest planet in the Solar System?
a) Earth
b) Saturn
c) Jupiter
d) Neptune
Answer: c) Jupiter.
Q. Which planet is closest to the Sun?
a) Earth
b) Venus
c) Mercury
d) Mars
Answer: c) Mercury
Q. The nearest star to Earth is:
A) Pole Star
B) Proxima Centauri
C) Sun
D) Sirius
Answer: C
Q. The Asteroid Belt lies between:
A) Earth & Mars
B) Mars & Jupiter
C) Jupiter & Saturn
D) Mercury & Venus
Answer: B) Mars & Jupiter
Q. The path on which planets revolve around the Sun is called?
a) Rotation
b) Axis
c) Orbit
d) Equator
Answer: c) Orbit
Explanation: Planets follow a fixed elliptical path around the Sun, known as an orbit.
Q. Which planet has the longest day (slowest rotation)?
A) Mercury
B) Venus
C) Saturn
D) Neptune
Answer: B) Venus
Q. Which planet is known as the “morning star” and “evening star”?
A) Mars
B) Venus
C) Mercury
D) Saturn
Answer: B) Venus
Q. Which planet is known as Earth’s twin?
a) Mars
b) Venus
c) Neptune
d) Saturn
Answer: b) Venus
Explanation: Venus is called Earth’s twin because of its similar size and structure.
Q. Which planet takes the longest time to orbit the Sun?
a) Uranus
b) Neptune
c) Saturn
d) Jupiter
Answer: b) Neptune
Explanation: Neptune takes about 164 Earth years to complete one orbit around the Sun.
Q. The Sun is mostly made of which gas?
a) Oxygen
b) Carbon
c) Hydrogen
d) Nitrogen
Answer: c) Hydrogen
Explanation: The Sun is composed mainly of hydrogen, which undergoes nuclear fusion to produce energy.
Q. Arrange the planets of the Solar System in decreasing order of their size (diameter).
A) Jupiter > Saturn > Uranus > Neptune > Earth > Venus > Mars > Mercury
B) Saturn > Jupiter > Neptune > Uranus > Earth > Venus > Mars > Mercury
C) Jupiter > Neptune > Uranus > Saturn > Earth > Venus > Mars > Mercury
D) Jupiter > Saturn > Earth > Venus > Uranus > Neptune > Mars > Mercury
Answer: A) Jupiter > Saturn > Uranus > Neptune > Earth > Venus > Mars > Mercury
Q. Arrange the planets according to their distance from the Sun (closest to farthest).
A) Mercury > Venus > Earth > Mars > Jupiter > Saturn > Uranus > Neptune
B) Venus > Mercury > Earth > Mars > Jupiter > Saturn > Uranus > Neptune
C) Mercury > Venus > Mars > Earth > Jupiter > Saturn > Neptune > Uranus
D) Mercury > Earth > Venus > Mars > Jupiter > Saturn > Uranus > Neptune
Answer: A) Mercury > Venus > Earth > Mars > Jupiter > Saturn > Uranus > Neptune
Q. Who was the first man to step on the surface of the Moon?
A) Yuri Gagarin
B) Neil Armstrong
C) Buzz Aldrin
D) Rakesh Sharma
Answer: B) Neil Armstrong
Q. What is the speed of light in vacuum?
A) 3,000 km/s
B) 30,000 km/s
C) 3,00,000 km/s
D) 3,000,000 km/s
Answer: C) 3,00,000 km/s
Q. What is a satellite?
A) A star that shines on its own
B) A body that revolves around a planet
C) A planet that revolves around the Sun
D) A comet moving in space
Answer: B) A body that revolves around a planet
Q. Which of the following is an example of a natural satellite?
A) INSAT-3C
B) Aryabhata
C) The Moon
D) Hubble Space Telescope
Answer: C) The Moon
Q. The Moon is an example of:
A) Artificial satellite
B) Natural satellite
C) Communication satellite
D) Navigational satellite
Answer: B) Natural satellite
Q. The diameter of the Moon compared to the Earth is about:
A) 1/2 of Earth
B) 1/3 of Earth
C) 1/4 of Earth
D) 1/10 of Earth
Answer: C) 1/4 of Earth
Q. The average distance of the Moon from Earth is about:
A) 38,000 km
B) 3,84,000 km
C) 38,00,000 km
D) 38 km
Answer: B) 3,84,000 km
Q. The Moon completes one revolution around the Earth in:
A) 7 days
B) 14 days
C) 27⅓ days
D) 365 days
Answer: C) 27⅓ days
Explanation: The Moon takes about 27.3 days to complete one orbit (sidereal period).
Q. The Moon takes the same time to rotate on its axis as it does to revolve around Earth. This is:
A) 24 hours
B) 27⅓ days
C) 365 days
D) 30 minutes
Answer: B) 27⅓ days
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