Question:medium

Which planet is known as Red Planet?

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Remember — Mars = Iron oxide = Red dust and soil.
Updated On: Jul 15, 2026
  • Venus
  • Mercury
  • Mars
  • Neptune
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The Correct Option is C

Approach Solution - 1

Mars is called the Red Planet because iron oxide dust covering its surface gives it a rusty reddish tint that is visible even without a telescope.

  1. Mars: The planet with the iron-oxide surface that earns it the nickname.
  2. Venus: Appears pale yellow-white due to its cloud cover, not red.
  3. Mercury: A grey-brown rocky world, not associated with red.
  4. Neptune: A blue gas giant, the opposite colour of Mars.

Mars is therefore the correct answer.

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Approach Solution -2

Since the question is really asking which planet's popular nickname matches Red, the quickest check is to recall what each planet is actually nicknamed and see which one lines up.

  1. Venus: Often called Earth's twin because of its similar size, not associated with any red-themed nickname.
  2. Mercury: Known simply as the smallest and innermost planet, with no colour-based nickname attached to it.
  3. Mars: Popularly known worldwide as the Red Planet, a nickname earned directly from its rust-coloured, iron oxide-rich surface visible even to the naked eye.
  4. Neptune: Sometimes referred to in relation to its deep blue colour, the reverse of the reddish tone the question is asking about.

Only Mars carries the specific Red Planet nickname the question is describing.

So the correct answer is Mars.

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