Odd One Out (Planet Edition)

Different planets in the solar system will be displayed below. You have to pick which one is the odd one out.
Pluto does count as a planet in this quiz.
Quiz by DoneAndGone
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Last updated: February 5, 2019
First submittedFebruary 5, 2019
Times taken531
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1. Which is the odd one out?
Earth
Mercury
Pluto
Uranus
The other three planets aren’t made of gas.
2. Which is the odd one out?
Jupiter
Mars
Neptune
Venus
This planet has no moons.
3. Which is the odd one out?
Mercury
Uranus
Earth
Saturn
The only planet that wasn’t named after a god.
4. Which is the odd one out?
Venus
Mars
Mercury
Spacecraft have landed on Mars and Venus but not Mercury.
5. Which is the odd one out?
Neptune
Uranus
Earth
Jupiter
This planet isn’t made of gas.
6. Which is the odd one out?
Earth
Mars
Venus
This planet has no liquid water.
7. Which is the odd one out?
Pluto
Saturn
Mars
Jupiter
This planet hasn’t made a full orbit around the Sun since it’s discovery.
8. Which is the odd one out?
Neptune
Jupiter
Saturn
Mercury
This planet has 6 letters in it’s name instead of 7
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