universe & solar system section 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Match List-I with List-II and select the correct answer using the codes given below the list:

a) 4 1 2 3

b) 4 3 2 1

c) 3 5 1 2

d) 2 3 5 1

Question : 2

The unit of measuring distance between the stars is known as

a) Galectic unit

b) Light year

c) Cosmic km.

d) Stellar mile

Question : 3

The surface temperature of sun is nearly

a) 6000 K

b) 8000 K

c) 4000 K

d) 2000 K

Question : 4

Assertion (A):
The same face of the Moon always faces the Earth.
Reason (R):
The Moon completes one rotation around its own axis in 23 and half days which is about the same time that it is takes to orbit the Earth.

a) (A) is true, but (R) is false

b) (A) is false, but (R) is true

c) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

d) Both (A) and (R) are true and (R) is the correct explanation of (A)

Question : 5

Which one of the following is heaviest planet of our Solar System?

a) Pluto

b) Saturn

c) Venus

d) Jupiter

Question : 6

The brightness of a star depends on its

a) size, temperature and mass

b) size, temperature and distance from the earth

c) size and distance from the earth

d) size and temperature only