universe & solar system section 3 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 31 [ PSC (Pre) 2019]

Seasonal changes is caused by which one of special characteristic of Earth’s motion?

a) Revolution around Sun

b) Axial tilt by 23½ degree

c) Both (A) and (B)

d) Rotation on its axis

Question : 32

Global Positioning System (GPS) is associated with

1. determining latitude and longitude
2. constellation of satellites
3. US system of GPS and Russian system of GLONASS
4. navigation

a) 2 and 3

b) All of these

c) 1 and 4

d) 1, 2 and 4

Question : 33 [PSC (Pre) 2018]

Solar energy is due to

a) Nuclear Fission

b) Oxidation

c) Nuclear Fusion

d) Ionization

Question : 34

Consider the following two statements, one labelled as the Assertion (A) and other as Reason (R). Examine these two statements carefully and select the correct answer by using the codes given below:
Assertion (A):
The planet Neptune appears blue in colour.
Reason (R):
The presence of Methane gas in the atmosphere of Neptune is responsible for its colour. Codes:

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 : 35

How much of the total surface area of the moon is never visible from the earth

a) 53 per cent

b) 59 per cent

c) 47 per cent

d) 41 per cent