Q. Which of the following planets is NOT a Jovian planet?
Answer: Mars
Notes: Mercury, Venus, and Mars have chemical and physical properties similar to Earth and are all referred to as terrestrial planets. The word ‘terrestrial’ comes from the Latin word terra, meaning ‘land.’ On the other end of the spectrum are the gas giants known as the Jovian planets.  These are Jupiter, Saturn, Uranus, and Neptune.  They are labeled Jovian after Jupiter, the largest of the group. The word ‘Jovian’ comes from Jove, another name for the Roman god Jupiter.