universe & solar system section 7 Practice Questions Answers Test with Solutions & More Shortcuts

Universe, solar system and Astronomy PRACTICE TEST [13 - EXERCISES]

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Question : 41 [NDA 2012-II]

Statement I:
The planet Neptune appears blue in colour.
Statement II:
The presence of methane gas in the atmosphere of Neptune is responsible for its colour

a) Statement I is true, but Statement II is false

b) Statement I is false, but Statement II is true

c) Both the statements are individually true but Statement II is not the correct explanation of Statement I

d) Both the statements are individually true and Statement II is the correct explanation of Statement I

Discuss »

Answer: (d)

Neptune’s atmosphere is made up of hydrogen, helium and methane. The methane in Neptune’s upper atmosphere absorbs the red light from the sun but reflects the blue light from the Sun back into space. This is why Neptune appears blue.

Question : 42

The latitude is the angular distance of a point on the earth’s surface with respect to the

a) pole star

b) Tropic of Cancer

c) prime meridian

d) equator

Discuss »

Answer: (d)

Question : 43

The group of stars arranged in a definite pattern is called.

a) Andromoda

b) Solar System

c) Constellation

d) Milky way

Discuss »

Answer: (c)

Constellation refers to a group of stars in a pattern.

Question : 44

Time taken by Moon’s light to reach Earth is

a) 1.58 sec

b) 2.32 sec

c) 1.34 sec

d) 58 sec

Discuss »

Answer: (c)

Moonlight reaches on Earth around 1.3 sec.

Question : 45 [PSC (Pre) 2019]

At which average speed the Earth revolve around the Sun?

a) 40 km/sec

b) 50 km/sec

c) 30 km/sec

d) 20 km/sec

Discuss »

Answer: (c)

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