Which planet is known for its distinct reddish appearance caused by iron oxide (rust) on its surface?
Correct Answer: Mars
Subject: geography
Explanation: • Mars appears reddish due to the presence of ferric iron in the form of red hematite (Iron Oxide) on its surface.
• It is widely known as the 'Red Planet'.
• Mars has two small, irregularly shaped moons named Phobos and Deimos.
• Venus is yellowish-white (sulfuric clouds), Jupiter has colorful gas bands, and Mercury is grey/rocky.
• 'Iron Oxide (Fe2O3) = Rust = Red Planet = Mars'.
• Mars features Olympus Mons, the largest volcano in the Solar System.