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

Question : 1

When did man first land on the Moon?

a) 1971

b) 1969

c) 1963

d) 1953

Question : 2

Consider the following statements regarding asteroids and comets?

1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.
2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.
3. Comets show a perceptible glowing tail, while asteroids do not.

a) 1 and 3 only

b) 1, 2 and 3

c) 1 and 2 only

d) 1 only

Question : 3

Which one of the following is the largest planet ?

a) Saturn

b) Uranus

c) Venus

d) Jupiter

Question : 4

Consider the following statement:

1. Mechanical weathering takes place only in sedimentary rocks.
2. The rain-water reacts with rocks to form new chemical substances.

a) Both 1 and 2

b) Neither 1 nor 2

c) 2 only

d) 1 only

Question : 5

Hottest planet of the solar system is

a) Mars

b) Earth

c) Venus

d) Mercury

Question : 6

Which of the following statements is/are correct?

1. All stars and planets in the universe shine by the reflected light of the sun.
2. Sun is believed to be formed of condensation of gases.
3. The sun has a surface temperature of about 20 million °C.
4. Sun is about 30,000 times as big as the earth.

a) 3 and 4

b) 2 and 3

c) 1 and 2

d) 2 only