The Solar System – Old Year Questions

1. Which of the following does not belong to the solar system?

(a) Asteroids
(b) Comets
(c) Planets
(d) Nebula

[53rd to 55th B.P.S.C. (Pre) 2011]


2. Who first propounded that the Sun is the centre of our Solar system and the earth revolves around it?

(a) Newton
(b) Galileo
(c) Panini
(d) Copernicus

[M.P.P.C.S. (Pre) 1995]


3. The scientist who first discovered that the earth revolves around the sun was –

(a) Newton
(b) Dalton
(c) Copernicus
(d) Einstein

[56thto 59th B.P.S.C. (Pre) 2015]


4. Which one of the following statements is correct with reference to our solar system?

(a) The Earth is the densest of all the planets in our solar system
(b) The predominant element in the composition of Earth is silicon
(c) The Sun contains 75 percent of the mass of the solar system
(d) The diameter of the Sun is 190 times that of the Earth

[I.A.S. (Pre) 2002]


5. The number of planet in the solar system is –

(a) 7
(b) 9
(c) 12
(d) 21

[U.P.P.C.S. (Pre) 1992]


6. Which of the given two planets are between Mars and Uranus in order of distance from the sun?

(a) Earth and Jupiter
(b) Jupiter and Saturn
(c) Saturn and Earth
(d) Saturn and Neptune

[I.A.S. (Pre) 2008]


7. Arrange the planets given below in order of increasing distance from sun.
1. Pluto
2. Earth

3. Jupiter
4. Uranus

Codes :

(a) 2,3,4,1
(b) 4,3,2,1
(c) 3,2,4,1
(d) 1,2,4,3

[U.P. Lower Sub. (Spl.) (Pre) 2003, U.P. Lower Sub. (Pre) 2002]


8. The Planets between Earth and Sun are –

(a) Mars and Mercury
(b) Mars and Venus
(c) Mercury and Venus
(d) Jupiter and Saturn

[U.P.P.S.C. (GIC) 2010]


9. The Earth is located between –

(a) Venus and Mars
(b) Mars and Jupiter
(c) Venus and Jupiter
(d) Mercury and Venus

[U.P.P.C.S. (Mains) 2012]


10. What is true about planets?

(a) Planets are non-luminous bodies and don’t shine
(b) Planets shine though they are non-luminous bodies
(c) Planets do not shine though they are the luminous body
(d) Planets are the luminous body and also shine

[U.P. P.C.S. (Pre) 1992]


11. Match List-I with List-II and select the correct answer by using the codes given below the lists:

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

Code :


(a) 2 3 5 1
(b) 3 5 1 2
(c) 4 1 2 3
(d) 4 3 2 1

[I.A.S. (Pre) 1998]


12. The planet nearest to the sun is –

(a) Mercury
(b) Earth
(c) Venus
(d) Pluto

[U.P.P.C.S. (Mains) 2004]


13. Which of the following pairs is not properly matched?

(a) The largest planet of the Solar System – Jupiter
(b) The smallest planet of the Solar System – Mercury
(c) The brightest planet of the Solar System – Venus
(d) The slowest moving planet of Solar System – Mars

[U.P.PC.S. (Mains) 2011]


14. Arrange the following in decreasing order of size and select the correct answer from the codes given below :
1. Jupiter
2. Uranus

3. Earth
4. Saturn

Code :

(a) 1, 4, 3, 2
(b) 4, 1, 2, 3
(c) 1, 4, 2, 3
(d) 4, 1, 3, 2

[M.P.P.C.S. (Pre) 2008]


15. Hydrogen, Helium and Methane are the main gases present on

(a) Uranus, Neptune and Pluto
(b) Jupiter, Saturn and Mars
(c) Uranus, Neptune and Venus
(d) Mars and Venus

[U.P.P.C.S. (Mains) 2004]


16. Which of the following is not a planet of the Solar System?

(a) Mercury
(b) Florida
(c) Venus
(d) Saturn

[M.P.P.C.S. (Pre) 2010]


17. ‘The term ‘Goldilocks Zone’ is often seen in the news in the context of

(a) The limits of the habitable zone above the surface of the Earth
(b) Regions inside the Earth where shale gas is available
(c) Search for the Earth-like planets in outer space
(d) Search for meteorites containing precious metals

[I.A.S. (Pre) 2015]


18. Match list – I with list –II and choose the correct answer by using the codes given below –
List – I                                                                 List- II
(A) Planet                                                         1. Moon
(B) Satellite                                                     2. Uranus
(C) Comet                                                         3. Mariner
(D) Planetoid or artificial Satellite         4. Halley
Code :

(a) 2 1 4 3
(b) 1 2 3 4
(c) 4 3 1 2
(d) 2 1 3 4

[U.P.P.C.S. (Pre) 1999]


19. Which of the following statements are correct regarding the solar system?
I. Mercury is the hottest planet in the solar system
II. Ganymede, satellite of Saturn, is the largest satellite in the solar system
III. Neptune is surrounded by methane gas rings of sub-zero temperature
IV. Phobos and Deimos are two satellites of Mars

(a) Only I and II are correct
(b) Only II and III are correct
(c) Only III and IV are correct
(d) I, II, III and IV all are correct

[Chhattisgarh P.C.S. (Pre) 2020]


III. The Sun

1. Which of the following statements is true regarding earth movement?
1. Earth rotates on its axis from west to east resulting into seasonal changes.
2. Earth’s revolution around sun results in the occurrence of day and night on Earth.

(a) Both 1 and 2 are true
(b) Only 2 is true
(c) Both 1 and 2 are false
(d) Only 1 is true

[Jharkhand P.C.S. (Pre) 2021]


2. The substances present at the centre of the sun are in:

(a) Solid, liquid and gaseous states
(b) Liquid state only
(c) Gaseous state only
(d) Both liquid and gaseous state

[U.P.P.C.S.(Pre) 2001]


3. Solar energy is due to –

(a) Ionization
(b) Nuclear Fusion
(c) Nuclear Fission
(d) Oxidation

[U.P.P.C.S. (Pre) 2006, U.P.P.C.S.(Pre) 2001, U.P.P.C.S. (Pre) 1996]


4. Diamond Ring is a phenomenon observed :

(a) At the start of a total solar eclipse
(b) At the end of a total solar eclipse
(c) Only along the peripheral regions of the totality trail
(d) Only in the central regions of the totality trail

[I.A.S. (Pre) 1996]


5. The solar eclipse occurs on –

(a) Quarter Moon day
(b) New Moon day
(c) Any day
(d) Full Moon day (Poornima)

[U.P.P.C.S. (Pre) 1991]


6. Every solar eclipse occurs on –

(a) Poornima only
(b) Amavasya only
(c) (a) and (b)
(d) Neither (a) nor (b)

[U.P. U.D.A./L.D.A. (Pre) 2006, R.A.S./R.T.S. (Pre) 2000, R.A.S./R.T.S. (Pre) 1999]


7. When does a solar eclipse occur?

(a) When the sun comes between the earth and the moon.
(b) When the earth comes between the sun and the Moon.
(c) When the moon comes between the earth and the sun
(d) None of the above

[47th B.P.S.C (Pre) 2005, M.P.P.C.S. (Pre) 1993, U.P.P.C.S. (Pre) 1990]


8. The Solar Eclipse achieves totality only in limited geographical regions because –

(a) The size of the shadow of the Moon on the Earth is small as compared to the cross section of the Earth.
(b) The Earth is not a smooth flat surface but has elevations and depressions.
(c) The trajectories of the Earth around the Sun and the Moon around the Earth are not perfect circles.
(d) Sun rays can reach most of the peripheral regions of the shadow of the Moon due to atmospheric refraction.

[I.A.S. (Pre) 1993]


9. The sun’s halo is produced by the refraction of light in –

(a) Water vapour in stratus clouds
(b) Ice crystals in cirrocumulus clouds
(c) Ice crystals in Cirrus clouds
(d) Dust particles in Stratus clouds

[I.A.S. (Pre) 2002]


10. One Astronomical unit is average distance –

(a) Between Earth and Sun
(b) Between Earth and Moon
(c) Between Jupiter and Sun
(d) Pluto and Sun

[Jharkhand P.C.S. (Pre) 2011, I.A.S. (Pre) 1998]


11. The average or mean distance between the Earth and the sun is –

(a) 70 × 155 Km
(b) 100 × 105 Km
(c) 110 × 106 Km
(d) 150 × 106 Km

[I.A.S. (Pre) 1997]


12. The distance between the earth and the sun is –

(a) 107.7 Million Km
(b) 142.7 Million Km
(c) 146.6 Million Km
(d) 149.6 Million Km

[U.P.P.C.S. (Pre) 2010]


13. The earth is nearest to the sun on –

(a) 3rd January
(b) 4th July
(c) 22nd March
(d) 21st September

[U.P.P.S.C. (GIC) 2010, Uttarakhand P.C.S. (Mains) 2006]


14. The size of the Sun is how many times bigger than that of the earth?

(a) 124 times
(b) 100 times
(c) 109 times
(d) 115 times

[M.P.P.C.S. (Pre) 2014]


IV. The Mercury

1. Which of the following planets takes the least time to orbit the sun:

(a) Pluto
(b) Mercury
(c) Earth
(d) Saturn

[U.P.P.C.S. (Pre) 2002]


2. The two planets having no satellites are :

(a) Earth and Jupiter
(b) Mercury and Venus
(c) Mercury and Saturn
(d) Venus and Mars

[U.P. Lower Sub. (Pre) 2009, U.P.P.C.S. (Pre) 1999]


3. Which of the following planets does not have a satellite?

(a) Earth
(b) Mars
(c) Jupiter
(d) Venus

[U.P. Lower Sub. (Mains) 2013]


4. The albedo of Mercury is much greater than the albedo of the Earth. Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2

[I.A.S. (Pre) 2008]


V. The Venus

1. The hottest planet in the solar system is –

(a) Mercury
(b) Venus
(c) Mars
(d) Earth

[41st B.P.S.C. (Pre) 1996]


2. Which planet is known as the ‘Evening Star’?

(a) Mars
(b) Jupiter
(c) Venus
(d) Saturn

[44th B.P.S.C. (Pre) 2000]


3. Which one of the following is known as ‘Morning Star’?

(a) Mercury
(b) Venus
(c) Mars
(d) Saturn

[U.P. Lower Sub. (Pre) 2015]


4. Assertion (A): The existence of human life on Venus is highly improbable.
Reason (R): Venus has an extremely high level of carbon dioxide in its atmosphere.
Code :

(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, and R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true

[I.A.S. (Pre) 2005]


5. The planet which is called the twin sister of the earth is –

(a) Mercury
(b) Venus
(c) Mars
(d) Pluto

[U.P. Lower Sub. (Pre) 2008, U.P.P.C.S. (Pre) 2007]


6. The Spacecraft “Magellan” was sent to –

(a) Pluto
(b) Saturn
(c) Mars
(d) Venus

[U.P.P.C.S. (Pre) 1991]


VI. The Earth

1. Who amongst the following was the first to state that the Earth was spherical?

(a) Aristotle
(b) Copernicus
(c) Ptolemy
(d) Strabo

[I.A.S. (Pre) 2001]


2. In the form of the organism, the Scientific name of Earth is –

(a) Cow
(b) Sita
(c) Green Planet
(d) Harmij

[U.P.P.C.S. (Pre) 1999]


3. The diameter of the Earth is –

(a) 8,000 km
(b) 1,00,000 km
(c) 12,800 km
(d) None of the above

[Uttarakhand P.C.S. (Mains) 2006]


4. Statement (A): Moving from one place on earth to another place of high latitude, the weight of an object decreases.
Reason (R): Earth is not a perfect sphere.
Choose the correct answer by using code given below –

(a) (A) and (R) both are true, and (R) explains (A) properly.
(b) (A) and (R) both are true, but (R) does not explains
(A) properly.
(c) (A) is true, but (R) is wrong.
(d) (A) is false, but (R) is true.

[I.A.S. (Pre) 2003]


5. Unlike the fluid core of the Earth, the core of the moon is–

(a) Plasma
(b) Volatile gas
(c) Viscous liquid
(d) Solid

[U.P.P.C.S. (Mains) 2004]


6. A chemical element found in abundance in the Earth’s crust is–

(a) Oxygen
(b) Aluminium
(c) Iron
(d) Silicon

[U. P.U.D.A./L.D.A. (Pre) 2013]


7. Time taken by light emitted from sun to reach earth is –

(a) 2 minutes
(b) 1 minutes
(c) 8 minutes
(d) 16 minutes

[U.P.P.C.S. (Mains) 2005, M.P.P.C.S. (Pre) 1996, 38th B.P.S.C. (Pre) 1992]


8. Which one of the following Stars is nearest to the Earth?

(a) Polaris
(b) Alpha Centauri
(c) Sun
(d) Sirius

[I.A.S. (Pre) 1997]


9. Which of the following planets is nearest to Earth?

(a) Pluto
(b) Mars
(c) Saturn
(d) Jupiter

[M.P.P.C.S. (Pre) 1993]


10. The planet nearest to the Earth is –

(a) Venus
(b) Mercury
(c) Mars
(d) Jupiter

[U.P.P.C.S. (Pre) 1991, U.P.P.C.S. (Pre) 1993, U.P.P.C.S. (Pre) 1997, Uttarakhand P.C.S. (Pre) 2002, U.P.P.C.S. (Pre) 2012]


11. In completing one revolution of the sun, Earth takes approximately –

(a) 365 days
(b) 365.25 days
(c) 365.5 days
(d) 365.75 days

[41st B.P.S.C. (Pre) 1996]


12. At which average speed the Earth revolves around the Sun?

(a) 20 Km/ sec
(b) 30 Km/ sec
(c) 40 Km/ sec
(d) 50 Km/ sec

[I.A.S. (Pre) 2006]


13. Approximately how much distance per minute does the earth cover while revolving?

(a) 49 km
(b) 59 km
(c) 69 km
(d) 79 km

[44th B.P.S.C. (Pre) 2001]


14. The equatorial circumference of the Earth is nearly

(a) 31,000 km
(b) 40,000 km
(c) 50,000 km
(d) 64,000 km

[Uttarakhand P.C.S. (Pre) 2016]


15. Earth’s axis is tilted at an angle of –

(a) 23 1/20
(b) 66 1/20
(c) 33 1/20
(d) 42 1/20

[M.P.P.C.S. (Pre) 1990]


16. The Earth’s axis of rotation (polar axis) is always inclined at an angle of

(a) 23.0o from the elliptic axis
(b) 23.1o from the elliptic axis
(c) 24.5o from the elliptic axis
(d) 23.5o from the elliptic axis

[U.P.P.C.S. (Pre) 2016]


17. Consider the following statements :
1. The axis of the earth’s magnetic field is inclined at 23 and a half degree to the geographic axis of the earth.
2. The earth’s magnetic pole in the northern hemisphere is located on a peninsula in northern Canada.
3. Earth’s magnetic equator passes through Thumba in South India.
Which of the Statements given above is/are correct?

(a) 1, 2 and 3
(b) 2 and 3
(c) 2 only
(d) 3 only

[I.A.S. (Pre) 2005]


18. Consider the following statements :
1. The Earth’s magnetic field has reversed every few hundred thousand years.
2. When the Earth was created more than 4000 million years ago, there was 54% oxygen and no carbon dioxide
3. When living organisms originated, they modified the early atmosphere of the Earth.
Which of the statements given above is/are correct?

(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

[I.A.S. (Pre) 2018]


19. Consider the following statements and select the correct answer from the codes given below:
1. The northern end of the earth’s axis is called the North Pole.
2. 45o latitude is half of the length of the equator.
3. There is the parallelism of the earth’s axis.
4. The earth’s speed of revolution is faster in the aphelion position.
Code :

(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) 1 and 3

[U.P.P.C.S. (Pre) 2000]


20. The causes of Day and Night is –

(a) Earth-rotation
(b) Rotation of Earth on its axis
(c) Tilt of Earth’s axis
(d) Moon’s rotation

[R.A.S./R.T.S. (Pre) 2000, R.A.S./R.T.S. (Pre) 1999]


21. Who among the following was the first to explain that the rotation of the earth on its own axis accounts for the daily rising and setting of the Sun?

(a) Aryabhata
(b) Bhaskara
(c) Brahmagupta
(d) Varahamihira
(e) None of the above/More than one of the above

[64th B.P.S.C. (Pre) 2018]


22. When the length of day and night is equal the Sunrays falls perpendicular at –

(a) North pole
(b) Equator
(c) South pole
(d) Tropic of cancer

[Uttarakhand P.C.S. (Pre) 2002]


23. Seasonal changes are caused by which one of the special characteristic of Earth’s motion ?

(a) Revolution around Sun
(b) Axial tilt by 23 degree
(c) (a) and (b) both
(d) Rotation on its axis

[R.A.S./R.T.S. (Pre) 1992]


24. What causes the change of Seasons?

(a) Earth’s Rotation and revolution
(b) Earth’s Revolution
(c) Earth’s Revolution and Inclination of its Axis
(d) Earth’s Rotation and inclination of its Axis

[Jharkhand P.C.S. (Pre) 2013]


25. Consider one special point at the Earth’s surface (eg. City Delhi) its temperature at noon (eg. 12 o’clock) will be higher in Summer in comparison to winter because-

(a) Earth is much closer to Sun in Summer in comparison to winter.
(b) In winter the Sun rays falling on the Earth bends more towards the Earth’s surface in Comparison to the summer.
(c) The vaporization of water happens only in winter due to environmental precipitation
(d) In winters the Earth’s axis becomes more inclined towards Sun.

[I.A.S. (Pre) 1993]


26. If the distance between the sun and the earth is reduced by quarter to present distance, then probability of which one will increase –

(a) Earth would fall into Sun.
(b) Earth shall be burned.
(c) The duration of our year will be decreased.
(d) Earth will fly into space.

[R.A.S./R.T.S. (Pre) 1993]


27. The possibility of a desert on earth is more

(a) Nearby 0° latitude
(b) Nearby 23° latitude
(c) Nearby 50° latitude
(d) Nearby 70° latitude

[41st B.P.S.C. (Pre) 1996]


28. Assertion (A): Artificial satellites are always launched from the earth in the eastward direction.
Reason (R): The earth rotates from west to east and so the Satellite attains the escape velocity.
Code :

(a) Both (A) and (R) are true, and (R) is the correct explanation of (A).
(b) Both (A) and (R) are true, (R) is not a correct explanation of (A).
(c) (A) is true, but (R) is false.
(d) (A) is false, but (R) is true.

[I.A.S. (Pre) 2002]


29. A Ball thrown outside from an artificial satellite revolving around the Earth will –

(a) Go to the Sun
(b) Go to the Moon
(c) Fall on the Earth
(d) Revolve around the Earth in the same orbit with the same time period as the satellite

[U.P.P.C.S. (Pre) 1995]


30. In the structure of planet Earth, below the mantle, the core is mainly made up of which one of the following ?

(a) Aluminium
(b) Chromium
(c) Iron
(d) Silicon

[I.A.S. (Pre) 2009]


31. The World Earth Day is celebrated on –

(a) 22 April
(b) 22 March
(c) 07 April
(d) 07 March

[M.P.P.C.S. (Pre) 2015]


VII. The Mars

1. The duration of its day and the tilt of its axis are almost identical to those of the Earth. This is true of :

(a) Uranus
(b) Neptune
(c) Saturn
(d) Mars

[U.P.P.C.S.(Pre) 2001, I.A.S. (Pre) 1994]


2. Assertion (A): To orbit around the Sun the planet Mars takes less time than the time taken by the Earth.
Reason (R): The diameter of the planet Mars is less than that of Earth.
Code :

(a) Both (A) and (R) are true, individually true and (R) is the correct explanation of (A)
(b) Both (A) and (R) are individually 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

[I.A.S. (Pre) 2006]


3. Which one of the following conditions is most relevant for the presence of life on Mars?

(a) Atmospheric composition
(b) Thermal conditions
(c) Occurrence of ice cap and frozen water
(d) Occurrence of ozone

[I.A.S. (Pre) 1997]


4. Which one of the following may have alien life because of a very conducive environment to life:

(a) Jupiter
(b) Mars
(c) Europa-The Jupiter’s Moon
(d) Moon-The Earth’s Moon

[U.P.P.C.S. (Pre) 2000]


5. Phoenix Mars Lander landed on the surface of Mars on :

(a) 27 June, 2008
(b) 27 May, 2008
(c) 26 June, 2008
(d) 26 May, 2008

[Chhattisgarh P.C.S. (Pre) 2008]


VIII. The Jupiter

1. The moons of the Planet Jupiter were discovered by –

(a) Newton
(b) Galileo
(c) Kepler
(d) Copernicus

[Uttarakhand Lower Sub. (Pre) 2010]


2. Which is the largest Planet in the Solar System?

(a) Jupiter
(b) Neptune
(c) Uranus
(d) Saturn

[M.P.P.C.S. (Pre) 1996, 41st B.P.S.C. (Pre) 1996, M.P.P.C.S. (Pre) 1990, U.P.P.C.S. (Pre) 1990]


3. Which one of the following is the heaviest planet of our Solar System?

(a) Jupiter
(b) Venus
(c) Pluto
(d) Saturn

[Chhattisgarh P.C.S. (Pre) 2003]


4. Among the following which planet takes maximum time for one revolution around the Sun?

(a) Earth
(b) Jupiter
(c) Mars
(d) Venus

[I.A.S. (Pre) 2003, Chhattisgarh P.C.S. (Pre) 2011]


5. The ring of Jupiter is composed of –

(a) Silicates
(b) Non-existent
(c) Very thick and opaque
(d) All the above

[U.P.P.C.S. (Mains) 2004]


6. Which one of the following planets has the largest number of natural satellites or moons?

(a) Jupiter
(b) Mars
(c) Saturn
(d) Venus

[I.A.S. (Pre) 2009]


IX. The Saturn

1. Time Saturn takes to complete one revolution around the Sun-

(a) 18.5 years
(b) 36 years
(c) 29.5 years
(d) 84 years

[44th B.P.S.C. (Pre) 2000]


2. Which of the following planets has rings around it –

(a) Saturn
(b) Mars
(c) Mercury
(d) Earth

[U.P.P.C.S. (Pre) 1990]


3. After seven years of its journey spacecraft Cassini started its revolution in June-2004 around which planet–

(a) Mercury
(b) Jupiter
(c) Mars
(d) Saturn

[U.P.P.C.S. (Mains) 2004]


4. Planet Saturn –

(a) Is colder than Pluto
(b) Is colder than Neptune
(c) Warmer than Neptune
(d) Warmer than Jupiter

[U.P.P.C.S. (Pre) 2010]


5. Titan is the largest moon of the planet –

(a) Mars
(b) Venus
(c) Jupiter
(d) Saturn

[U.P.U.D.A./L.D.A. (Pre) 2006]


X. The Uranus, Neptune and Pluto

1. For one revolution around the Sun, Uranus takes –

(a) 84 years
(b) 36 years
(c) 18 years
(d) 48 years

[44th B.P.S.C. (Pre) 2000]


2. The year is largest on –

(a) Pluto
(b) Jupiter
(c) Neptune
(d) Earth

[39th B.P.S.C. (Pre) 1994]


3. Which planet takes the longest period in revolving around the Sun ?

(a) Uranus
(b) Jupiter
(c) Neptune
(d) Pluto

[U.P. Lower Sub. (Spl) (Pre) 2004]


4. According to a new definition adopted by ‘International Astronomical Union’ in 2006, which of the following is not a ‘planet’?

(a) Uranus
(b) Neptune
(c) Pluto
(d) Jupiter

[M.P.P.C.S. (Pre) 2012]


5. Which is the smallest planet of the solar system –

(a) Pluto
(b) Mars
(c) Venus
(d) Mercury

[U.P.P.C.S. (Pre) 1991]


6. The coldest planet in the solar system is –

(a) Neptune
(b) Jupiter
(c) Mars
(d) Saturn

[M.P.P.C.S. (Pre) 2014]


7. Which of the following planets is the farthest planet of the solar system –

(a) Neptune
(b) Pluto
(c) Sometimes Neptune and sometimes Pluto
(d) Mars

[I.A.S. (Pre) 2002, I.A.S. (Pre) 2005]


8. Although Pluto is the farthest planet, its orbital path is excessively elliptical and crosses other planets’ orbital paths, resulting in the period starting from 1979 for 20 years Pluto is not the farthest planet, which planet is the farthest planet-

(a) Jupiter
(b) Saturn
(c) Uranus
(d) Neptune

[I.A.S. (Pre) 1993]


9. Nix and Hydra are the moons of –

(a) Pluto
(b) Venus
(c) Jupiter
(d) Mercury

[U.P.U.D.A./L.D.A .(Spl) (Mains) 2010]


XI. The Moon

1. When did man first land on the Moon?

(a) 1953
(b) 1963
(c) 1971
(d) 1969

[M.P.P.C.S. (Pre) 1995]


2. The “Sea of Tranquility” lies on –

(a) Earth
(b) Sun
(c) Jupiter
(d) Moon

[M.P.P.C.S. (Pre) 1995]


3. Assertion (A): The same face of the Moon always faces the Earth
Reason (R): The Moon completes one rotation around its own axis in 23 and half days which is about the same time that it takes to orbit the Earth.

(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.

[I.A.S. (Pre) 2005]


4. Consider the following statements and answer the question with the help of codes 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 around 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

[U.P.P.C.S. (Pre) 2006]


5. On the surface of the moon, two persons cannot listen to each other as –

(a) Their ears stops working at the Moon
(b) There is no atmosphere on the Moon
(c) They wear special types of space suits on the Moon
(d) Sound travels very slow on the Moon

[U.P.P.C.S. (Pre) 2003]


6. When does a Lunar eclipse take place?

(a) When the moon comes between the sun and the earth
(b) When the earth comes between the sun and the moon
(c) When the sun comes between the earth and the moon
(d) None of these

[M.P.P.C.S. (Pre) 1994]


7. Lunar Eclipse is caused when –

(a) Moon comes in between Earth and Sun
(b) Earth comes between Sun and Moon
(c) Sun comes between Earth and Moon
(d) Sun and Moon coincide

[Uttarakhand Lower Sub. (Pre) 2010]


8. In which situation lunar eclipse occurs?

(a) Half Moon
(b) New Moon
(c) Full Moon
(d) None of these

[M.P.P.C.S. (Pre) 1992]


9. The main condition responsible for greater brightness of the moon on the full moon day of 22nd Dec. 99′ was :

(a) Aphelion
(b) Perihelion
(c) Apogee
(d) Perigee

[R.A.S./R.T.S.(Pre) 1999]


10. When the moon size is half of the full moon, the angle between the Sun, the Earth and the Moon is –

(a) 45o
(b) 90o
(c) 180o
(d) 270o

[U.P.P.C.S. (Pre) 2005]


11. Choose the odd one –

(a) Mars
(b) Mercury
(c) Moon
(d) Earth

[Chhattisgarh P.C.S. (Pre) 2005]


12. Which of the following is not a planet?

(a) Moon
(b) Earth
(c) Mars
(d) Mercury

[Uttarakhand Lower Sub. (Pre) 2010]


13. Match the following –
(A) Planet (1) Moon
(B) Satellite (2) Uranus
(C) Comet (3) Mariner
(D) Artificial spacecraft (4) Halley
Code :

(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

[U.P.P.C.S. (Pre) 1992]


14. The ‘blue moon’ phenomenon occurs when –

(a) Two full moons occur in the same month
(b) Four full moons appear in two consecutive months of the same calendar year
(c) Two full moons appear in the same month, thrice in a calendar
(d) None of the above

[U.P.P.C.S. (Mains) 2009, U.P.P.C.S. (Mains) 2007]


15. When any object is taken from the Earth to the Moon –

(a) Its weight increases
(b) Its weight decrease
(c) There is no change in its weight
(d) It becomes totally weightless

[U.P.P.C.S. (Pre) 2006]


16. The distance of the Moon from the Earth is –

(a) 364 thousand km
(b) 300 thousand km
(c) 446 thousand km
(d) 350 thousand km

[U.P. Lower Sub. (Pre) 2008]


17. A country by sending its ‘SELENE’ (Selenological and Engineering Explorer) in the orbit of the Moon became the first country in Asia. The country which achieved this fame is –

(a) Japan
(b) China
(c) India
(d) Pakistan

[U.P.P.C.S. (Pre) 2009]


XII. The Asteroids

1. The group of small pieces of rock revolving around the sun between the orbits of Mars and Jupiter are called:

(a) Meteors
(b) Comets
(c) Metroid
(d) Asteroids

[I.A.S. (Pre) 1997]


2. 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

[I.A.S. (Pre) 1998]


3. The Asteroids are small celestial bodies in the solar system which are found between the planets

(a) Mercury and Venus
(b) Mars and Jupiter
(c) Jupiter and Saturn
(d) Neptune and Saturn

[U.P.P.C.S. (Pre) 2008]


4. 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) 3 only
(d) 1, 2 and 3

[I.A.S. (Pre) 2011]


XIII. The Comets and Meteors

1. The tail of a comet is directed away from the Sun, because–

(a) As the Comet rotates around the Sun, the lighter mass of Comet is pushed away due to centrifugal force alone.
(b) As the Comet rotates, the lighter mass of the Comet is attracted by some stars situated in the direction of its tail.
(c) The radiation emitted by the Sun exerts a radial pressure on the comet throwing its tail away from the Sun.
(d) The Tail of the Comet always exists in the same orientation.

[I.A.S. (Pre) 1997]


2. Hale-Bopp is the name of a-

(a) Comet
(b) Cartoon Character
(c) International Company
(d) Toy

[M.P.P.C.S. (Pre) 1997]


3. With which planet comet Shoemaker-Levy collided –

(a) Pluto
(b) Mars
(c) Jupiter
(d) Saturn

[I.A.S. (Pre) 1995]


4. Meteor is a –

(a) Fast-moving star
(b) A piece of matter which has entered the earth’s atmosphere from outer space
(c) Part of the stellar system
(d) Tailles Comet

[I.A.S. (Pre) 1995]