Question

The smallest planet in the solar system is__________.
(A). Mars
(B). Jupiter
(C). Mercury
(D). Earth

Answer 1

Hint: The planet is the astronomical object which revolves around any star due to gravitational force. The stars are the astronomical object having its own light. The planets and its satellite do not have their own light. They are dependent on the star for the source of light and energy.

Complete step-by-step answer:

The solar system is a gravitationally bound system of the star Sun. Our Earth lies in the solar system. The Sun is located in the centre of the solar system and the planets are revolving around the Sun. The planets are revolving around the Sun with the gravitational force.
The Centre of the solar system is the Sun. The planet nearest to the Sun is Mercury. It is the smallest planet of the solar system. The next planet after mercury is Venus. It is the hottest planet of the solar system. Next planet after Venus is Our Earth. Only Earth has the existence of life till now. The fourth planet from the Sun in the solar system is MarsIt is a red coloured planet. Fifth planet in the solar system is Jupiter. It is the largest planet of the solar system. Sixth planet of the solar system is Saturn. It is white coloured coldest planet in the solar system. Seventh planet of the solar system is Uranus. Eighth planet of the solar system is Neptune.

Correct option is C.

Note: Pluto is the dwarf planet. Hence it is not counted in the planet of the solar system.
Initially it was assumed that Pluto is the 9th planet of the solar system. Then the smallest planet on the solar system was Pluto. But after discoveries, it was found that Pluto is the dwarf planet.