ssb coaching Defence Academy Coimbatore Geography Questions Answers 1. Study of the Universe is known as ? A. Cosmology 2, Which is correct order of solar system starting from Sun ? A. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune 3, Which Planet is dwarf planet a. MERCURY Mercury, Venus, Earth and Mars are called terrestrial planets. Jupiter, Saturn, Uranus and Neptune are called Gaseous planets. 4, Diameter of Sun is ? A. 14 Lakh kms Explanation: B. "Size of sun compared to Earth" : Sun is thirteen lakh times as that of Earth. 5. Which are the main gases present in Sun ? Sun is composed of 75 % of hydrogen and 26.5 % of Helium. 6. Which planet is biggest in size in solar system ? a. Jupitar ( Smallest is Mercury) 7. Which planet is brightest ? Venus 8. Which planet is also known as Red planet ? Mars 9, "Titan" is satellite of ? "Titan" is satellite of Saturn and is the largest sa...