universe & solar system section 11 MCQ Questions & Answers Detailed Explanation

Question : 1

Study the following statements about the interior of the earth and select the correct answer from the codes given below:

1. The average density of the outer crust is 2.8.
2. The crust is separated from the mantle by the Gutenberg discontinuity.
3. There is sudden increase in the velocity of P waves along the mantle core boundary.
4. The inner core of the earth is in molten state.

a) 1 and 3

b) 3 and 4

c) 2 and 3

d) 1 and 2

Question : 2

Diamond ring is a phenomenon observed:

a) only along the peripheral regions of the totality trail

b) only in the central regions of the totality trail

c) at the end of a total solar eclipse

d) at the start of a total solar eclipse

Question : 3

Consider the following statements :

1. As a rock, graphite is formed from coal by thermal metamorphism.
2. Gypsum is an example of sedimentary rock.

a) Both 1 and 2

b) Neither 1 nor 2

c) 2 only

d) 1 only

Question : 4

Which one of the following planets is nearest to the earth?

a) Mars

b) Uranus

c) Venus

d) Mercury

Question : 5

Which of the following Scientist proved that the path of each planet around the Sun is elliptical?

a) Newton

b) Copernicus

c) Galileo

d) Kepler

Question : 6

Which is the largest Planet in the Solar System?

a) Uranus

b) Saturn

c) Neptune

d) Jupiter