universe & solar system section 2 Practice Questions Answers Test with Solutions & More Shortcuts

Universe, solar system and Astronomy PRACTICE TEST [13 - EXERCISES]

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Question : 26 [SSC CML (PRE) 2000]

The number of zodiacs is

a) 13

b) 11

c) 12

d) 10

Discuss »

Answer: (c)

In both astrology and historical astronomy, the zodiac is a circle of twelve 30° divisions of celestial longitude that are centered upon the ecliptic: the apparent path of the Sun across the celestial sphere over the course of the year.

Historically, these twelve divisions are called signs.

Question : 27

Match List-I with List-II and select the correct answer using the codes given below the list:

List I List II
(Special characteristic) (Name of Planet)
A. Smallest planet of the solar system 1. Mercury
B. Largest planet of the solar system 2. Venus
C. Planet second from the Sun in the Solar system 3. Jupiter 
D. Planet nearest to the Sun 4. Pluto
  5. Saturn
Codes: A B C D

a) 4 1 2 3

b) 4 3 2 1

c) 3 5 1 2

d) 2 3 5 1

Discuss »

Answer: (b)

The smallest planet of the solar system is Pluto while the largest is Jupiter.

The Planet second from the Sun in the solar system is Venus; the planet nearest to the Sun is Mercury.

Question : 28 [PCS (Pre) 2006]

The unit of measuring distance between the stars is known as

a) Galectic unit

b) Light year

c) Cosmic km.

d) Stellar mile

Discuss »

Answer: (b)

Question : 29

The surface temperature of sun is nearly

a) 6000 K

b) 8000 K

c) 4000 K

d) 2000 K

Discuss »

Answer: (a)

The surface temperature of Sun is 5778 K or approximately 6000 K.

Question : 30

Match column I with column II and select the correct answer using the code given below the columns:

Column I Column II
(Author) (Works)
A. Sial i. Remains of the dead plants and animals trapped in rocks
B. Sima ii. Layer lies between the crust and core
C. Nife iii. The uppermost layer of the earth
D. Fossils iv. The innermost layer of the earth
Codes: A B C D

a) A – iii, B – i, C – iv, D – ii

b) A – iv, B – i, C – ii, D – iii

c) A – ii, B – i, C – iii, D – iv

d) A – iii, B – ii, C – iv, D – i

Discuss »

Answer: (d)

  1. The Sial refers to the composition of the upper layer of the Earth’s crust, namely rocks rich in silicates and aluminium minerals.
  2. Sima is the name for the lower layer of the Earth’s crust. This layer is made of rocks rich in magnesium silicate minerals.
  3. Nife is the innermost layer of earth.
  4. Fossils are the remains of dead plants and animals trapped in rocks.

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