universe & solar system section 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Assertion (A):
To orbit around the Sun the planet Mars takes lesser time than the time taken by the Earth.
Reason (R):
The diameter of the planet Mars is less than that of Earth.
Code

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 : 2

Time taken by light emitted from Sun to reach Earth is

a) 8 minutes

b) 16 minutes

c) 1 minute

d) 2 minutes

Question : 3

The Earth’s axis of rotation (polar axis) is always inclined at an angle of

a) 24.5º from the elliptic axis

b) 23.5º from the elliptic axis

c) 23.1º from the elliptic axis

d) 23.0º from the elliptic axis

Question : 4

Consider the following statements:

1. Our solar system is located in the orion arm of the Milky way galaxy, about two-third of the way out from the centre.
2. The solar system formed from an interstellar cloud of dust and gas or nebulla about 4.6 billion years ago.

a) Both 1 and 2

b) Neither 1 nor 2

c) 2 only

d) 1 only

Question : 5

Which of the following stars is known as Fossil star?

a) Red Giant

b) White Dwarf

c) Dog Star

d) Protostar

Question : 6

Which of the following pairs is not properly matched?

a) The brightest planet of the Solar System - Venus

b) The slowest moving planet of Solar System – Mars

c) The smallest planet of the Solar System - Mercury

d) The largest planet of the Solar System - Jupiter