universe & solar system section 4 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following statement(s) is/are true?

1. A planet is a celestial body that orbits a star and may or may not be a star itself
2. A planet has sufficient mass for self gravity and is roughly spherical in shape
3. A planet is formed out of fragments of rocks and metal leftovers is our solar system
4. Pluto is the smaller planet of our solar system

a) 2 and 4

b) 2, 3 and 4

c) 2 only

d) 1 and 2

Question : 2

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 : 3

Earthquakes are important in landform studies because they can trigger catastrophic events like

1. Landslides and mudflows
2. Glacier surges
3. Tsunamis causing damage and shoreline changes.

a) 1 and 2

b) 1 and 3

c) 3 only

d) 1, 2 and 3

Question : 4

The last stage in the life cycle of a star is

a) Red Giant

b) White Dwarf

c) Supernova

d) Black Hole

Question : 5

The Earth becomes minimum distance from the sun?

a) 22nd March

b) 21st September

c) 4th July

d) 3rd January

Question : 6

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