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

Question : 1

The Solar Eclipse achieves totality only in limited geographical regions because

a) The trajectories of the Earth around the Sun and Moon around the Earth are not perfect circles

b) Sun rays can reach most of the peripheral regions of the shadow of the Moon due to atmosphere refraction

c) The Earth is not a smooth flat surface, but has elevations and depressions

d) The size of the shadow of the Moon on the Earth is small as compared to cross-section of Earth

Question : 2

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

Question : 3

Which of the following stars is known as Fossil star?

a) Red Giant

b) White Dwarf

c) Dog Star

d) Protostar

Question : 4

In completing one revolution of the Sun, Earth takes approximately

a) 365.5 days

b) 365.75 days

c) 365.25 days

d) 365 days

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

Which of the following planets does not have a satellite?

a) Neptune

b) Earth

c) Mercury

d) Mars