Which one of the following is the correct sequence of arrangement of the given planets in descending order of their density (in gm/cm³) ?

Which of the following planets has the least density?

Which one of the following statements is correct with reference to our solar system?

Which one of the following is not a terrestrial planet?

Which of the following is not a planet?

Which of the given two planets are between Mars and Uranus in order of distance from the sun?