Solar System

71.	The planet traveling towards the west is
	A. Mars
	B. Uranus
	C. Pluto
	D. Earth Option “B” is correct. Venus and are the only two planets that rotate from east to west.

72.	Oberon, Titania, Ariel, Umbriel and Miranda – these five are satellites of which planet?
	A. Jupiter
	B. Uranus
	C. Earh
	D. Mars Option “B” is correct. and its five major moons are depicted in this montage of images acquired by the Voyager 2 spacecraft during its January 1986 flyby of the planet. The moons, counterclockwise from bottom right, are Ariel, Miranda, Titania, Oberon and Umbriel.

73.	Which of the following planets is known by the nickname of ‘recumbent planet’ because of its greater tilt on its axis towards the Sun?
	A. Jupiter
	B. pluto
	C. Uranus
	D. Mars Option “C” is correct. The distance of the planet Uranus from the Sun is 2,870,972,200 (287 crores) kilometers. The color of the planet Uranus is blue. The planet Uranus is called a recumbent planet because it is tilted by 97.77 degrees from its axis.

74.	In how many years does Uranus make one revolution around the Sun?
	A. 29 years
	B. 48 years
	C. 84 years
	D. 92 years Option “C” is correct. And Uranus makes a complete orbit around the Sun (a year in Uranian time) in about 84 Earth years (30,687 Earth days).

75.	Which is the planet that rotates in the opposite direction than other planets?
	A. Neptune
	B. Pluto
	C. Uranus
	D. Mars Option “C” is correct. Uranus is also one of just two planets that rotate in the opposite direction than most of the planets (Venus is the other one), from east to west.

76.	Which planet emits green light?
	A. Jupiter
	B. Venus
	C. Uranus
	D. Mars Option “D” is correct. Mars’s atmosphere has a green glow, much like the Northern and Southern lights on Earth. Researchers predicted four decades ago that Mars’s atmosphere should emit green light, but it has proved elusive

77.	Which of the following planets of the Solar System is the coldest planet?
	A. Neptune
	B. Earth
	C. Mars
	D. Neptune Option “A” is correct. Neptune, which is currently accepted to be the farthest planet revolving around the sun, is the coldest planet in solar system.

78.	Due to the presence of which gas, the planet Neptune appears green?
	A. Methane
	B. Ammonia
	C. Nitrogen
	D. Hydrogen Option “A” is correct. Neptune’s atmosphere is made up mostly of hydrogen and helium with just a little bit of methane. And that’s cause it to be appeare green

79.	Which two of the following planets are known as ‘Siblings’?
	A. Mercury and Venus
	B. Earth and Venus
	C. Jupiter and Saturn
	D. Uranus and Neptune Option “D” is correct. Uranus and Neptune are known as siblings.

80.	Which is the smallest planet in the solar system?
	A. Mercury
	B. Venus
	C. Mars
	D. Earth Option “A” is correct. Mercury is the smallest planet in our solar system – only slightly larger than Earth’s Moon.

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