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

Question : 1

The planet which has the highest surface temperature is

a) Pluto

b) Venus

c) Earth

d) Jupiter

Question : 2

Consider the following statements

1. The Earth receives the Sun’s energy at the infrared end of the spectrum.
2. The Earth re-radiates the Sun’s heat as ultraviolet energy.

a) Both 1 and 2

b) Neither 1 nor 2

c) 2 only

d) 1 only

Question : 3

Which one of the following is the correct sequence of the given planets in increasing order of their size (diameter) ?

a) Mercury - Mars - Venus - Uranus - Earth

b) Venus - Mercury - Marsu - Earth - Uranus

c) Mercury - Mars - Venus - Earth - Uranus

d) Mars - Venus - Earth - Mercury - Uranus

Question : 4

Which of the following planets is smaller in size than the Earth?

a) Saturn

b) Neptune

c) Uranus

d) Venus

Question : 5

What causes the change of seasons ?

a) Earth’s revolution and inclination of its axis

b) Earth’s rotation and inclination of its axis

c) Earth’s revolution

d) Earth’s rotation and revolution

Question : 6

In which of the following eras the earth was nearly covered with snow and ice?

a) Pleistocene Era

b) Tertiary Era

c) Pliocene Era

d) Cretaceous Era