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

Question : 1

Which one of the following statements is correct with reference to our solar system?

a) The Sun contains 75 percent of the mass of the solar system.

b) The diameter of the sun is 190 times that of the Earth.

c) The predominant element in the composition of Earth is silicon.

d) The earth is the densest of all the planets in our solar system.

Question : 2

Statement I:
Doldrums is a calm belt between 5°N and 5°S of the equator.
Statement II:
The sun rays strike almost vertically over the equator throughout the year.
Code:

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 correct explanation of Statement I

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

Question : 3

Every Solar eclipse occurs on

a) Amavasya only

b) Poornima only

c) Both (A) and (B)

d) Neither (A) nor (B)

Question : 4

By how much degree the earth is inclined on its own Axis

a) 241/2

b) 691/2

c) 661/2

d) 231/2

Question : 5

The Astronaut looks the sky in the space

a) Red

b) White

c) Black

d) Blue

Question : 6

Which one of the following conditions is most relevant for the presence of life on mars?

a) Occurrence of ice cap and frozen water

b) Occurrence of ozone

c) Thermal conditions

d) Atmospheric composition