universe & solar system section 10 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following elements exhibit the following properties?

1. It is the third most abundant element in the earth crust.
2. It exists in a stable combination with other materials mainly silicates and oxides.
3. It has high strength-to-weight ratio.

a) Aluminium

b) Calcium

c) Iron

d) Magnesium

Question : 2

The tail of a comet is directed away from the sun because

a) The radiation emitted by the sun exerts a radial pressure on the comet throwing its tail away from the Sun.

b) The tail of the comet always exists in the same orientation.

c) the comet rotates, the lighter mass of the comet is attracted by some star situated in the direction of its tail.

d) the comet rotates around the sun, the lighter mass of the comet is pushed away due to the centrifugal force alone.

Question : 3

The year is largest on

a) Neptune

b) Earth

c) Jupiter

d) Uranus

Question : 4

The average distance between the moon and the earth’s

a) 540,000 km

b) 576,000 km

c) 267,000 km

d) 384,000 km

Question : 5

Consider the following statements and select the correct answer from the code given below.

1. The Northern end of the Earth’s axis is called North Pole.
2. 45º latitude is half of the length of the equator.
3. Earth’s axis are parallel.
4. The Earth’s speed of revolution is faster in aphelion position.

a) 3 and 4

b) 1 and 3

c) 2 and 3

d) 1 and 2

Question : 6

The Earth is nearest to the Sun on

a) 22nd March

b) 21st September

c) 4th July

d) 3rd January