Which of the following groups of planets is termed as ‘gas planets’ as

Which of the following groups of planets is termed as ‘gas planets’ as they are composed primarily of lighter ices, liquids and gases?

Mars, Jupiter, Neptune, Uranus
Jupiter, Uranus, Neptune, Saturn
Saturn, Mars, Jupiter, Neptune
Neptune, Saturn, Mars, Uranus
This question was previously asked in
UPSC CDS-1 – 2023
The solar system’s planets are broadly classified into terrestrial planets and Jovian planets (or gas giants). The Jovian planets are located further from the Sun and are significantly larger and less dense than terrestrial planets. They are composed primarily of lighter elements like hydrogen and helium, as well as ices and liquids. This group includes Jupiter, Saturn, Uranus, and Neptune.
The inner planets (Mercury, Venus, Earth, Mars) are terrestrial, meaning they are rocky and have solid surfaces. The outer planets (Jupiter, Saturn, Uranus, Neptune) are Jovian or gas giants.
Jupiter and Saturn are often referred to as gas giants, composed mainly of hydrogen and helium. Uranus and Neptune are sometimes called ice giants, as they have a higher proportion of volatile substances (like water, ammonia, and methane) in their interior compared to Jupiter and Saturn, although they also contain significant amounts of hydrogen and helium. The term ‘gas planets’ or ‘gas giants’ commonly refers to all four Jovian planets.
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