Planets of Our Solar System MCQs with Answers

One-liner

The number of planets visible to the naked eye from Earth is 5 — Mercury, Venus, Mars, Jupiter, and Saturn.

One-liner

Jupiter is the fastest rotating planet in our solar system, completing one rotation in just under 10 hours.

One-liner

Johannes Kepler is credited with discovering the laws of planetary motion.

One-liner

Venus appears to be more volcanically active than previously thought, with recent evidence suggesting ongoing volcanic eruptions on its surface.

One-liner

Pluto was removed from the category of planets in 2006 by the International Astronomical Union (IAU).

One-liner

The brightest planet in the night sky is Venus, often called the Morning Star or Evening Star.

One-liner

Earth is the only planet in our solar system not named after a Roman or Greek god.

One-liner

Neptune has the longest year in our solar system, taking about 165 Earth years to complete one orbit around the Sun.

One-liner

Venus is known as Earth's Twin because of its similar size, mass, density, and proximity to the Sun.

One-liner

Earth is the fifth largest planet in the solar system by size (diameter).