Question

Which of the following facts about the planet Neptune is/are true?

• A. It has very high speed winds.
• B. It is the coldest planet.
• C. It has a longer period of revolution than all other planets.
• D. It is the smallest of the ice giants.

Answer 1

Answer: (A), (C), (D)

The correct options are
A It has very high speed winds.
C It has a longer period of revolution than all other planets.
D It is the smallest of the ice giants.

The planet Neptune is the last planet from the Sun in our Solar System, at a distance of 4.5 billion km. Out of the two ice giants, it is the smallest in size with its radius $1000\text{km}$ less than that of Uranus ($\approx 51000\text{km}$).
Since it is the farthest away from the Sun, it has the longest orbit, out of all the planets. It takes 164 Earth years for Neptune to complete one revolution around the Sun. However, the coldest planet in our Solar System is Uranus, and not Neptune, which is attributed to the chemical composition of Uranus.