GENERAL KNOWLEDGE

Detailed explanation-1: -A gas giant is a large planet mostly composed of helium and/or hydrogen. These planets, like Jupiter and Saturn in our solar system, don’t have hard surfaces and instead have swirling gases above a solid core.

Detailed explanation-2: -The four gas giants in our solar system are Neptune, Uranus, Saturn, and Jupiter. These are also called the Jovian planets.

Detailed explanation-3: -Answer: The objects with the highest percentage of hydrogen are the sun, Mercury, Jupiter, Saturn, Uranus and Neptune.

Detailed explanation-4: -Gas giants are large planets composed mostly of gases, such as hydrogen and helium, with a relatively small rocky core. The gas giants of our solar system-Jupiter, Saturn, Uranus and Neptune-together make up a group known as the Jovian planets, according to the University of Colorado at Boulder (opens in new tab).