Universe MCQ Set-8

141. Consider the following statements and answer the question with the help of code given below.

Assertion(A): Only one side of the Moon’s surface is visible from the Earth.
Reason(R): The period of rotation of the Moon on its axis is equal to the period of its revolution round the Earth.

Code
(A) Both (A) and (R) are true and (R) is the correct explanation of (A)
(B) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
(C) (A) is true, but (R) is false
(D) (A) is false, but (R) is true

Answer (A) Both (A) and (R) are true and (R) is the correct explanation of (A)

[UPPCS (Pre) 2006]

142. Match the following.

List-I List-II
(a) Planet 1. Moon
(b) Satellite 2. Uranus
(c) Comet 3. Mariner
(d) Artificial spacecraft 4. Halley

(A) (a) – 2, (b) – 1, (c) – 4, (d) – 3
(B) (a) – 1, (b) – 2, (c) – 3, (d) – 4
(C) (a) – 4, (b) – 3, (c) – 1, (d) – 2
(D) (a) – 2, (b) – 1, (c) – 3, (d) – 4

Answer (A) (a) – 2, (b) – 1, (c) – 4, (d) – 3

[Punjab PSC (Pre) 2017 UPPCS (Pre) 1992]

143. Consider the following statements regarding asteroids.

1. Asteroids are rocky debris of varying sizes orbiting the Sun.
2. Most of the asteroids are small but some have diameter as large and 1000 km.
3. The orbit of asteroids lies between the orbits of Jupiter and Saturn.

Of these statements.
(A) 1, 2 and 3 are correct
(B) 2 and 3 are correct
(C) 1 and 2 are correct
(D) 1 and 3 are correct

Answer (C) 1 and 2 are correct

[IAS (Pre) 1998]

144. What is the difference between 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.

Which of the statements given above is/are correct?
(A) 1 and 2
(B) 1 and 3
(C) Only 3
(D) 1, 2 and 3

Answer (B) 1 and 3

[IAS (Pre) 2011]