Question

Q.Consider the following statements regarding Terrestrial Planets:

Which of the above statements is/are incorrect?

• A.
  1 only
• B.
  2 only
• C.
  Both 1 and 2
• D.
  Neither 1 nor 2

Answer 1

The correct option is A

1 only
Explanation:

Based on their composition, the inner planets are referred to as the terrestrial planets while the outer planets are referred to as gaseous planets.

Statement 1 is incorrect. Not terrestrial, but Jovian planets have thick atmosphere, mostly of helium and hydrogen. The terrestrial planets are rich in heavier gases and gaseous compounds, such as carbon dioxide, nitrogen, oxygen, ozone, and argon and the atmosphere is not thick.

Statement 2 is correct. Terrestrial planets are made up of rock and metals and have relatively high densities. Such planets have common surface features, which include canyons, craters, mountains, volcanoes and other similar structures, depending on the presence of water and tectonic activity.

Note: The Jovian planets are Jupiter, Saturn, Uranus, and Neptune. These planets have no solid surfaces and are essentially large balls of gas composed primarily of hydrogen and helium.