Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

Which is the hottest planet in the solar system?

A. upiter
B. aturn
C. enus
D. ranus
Answer» D. ranus
2.

The planets are kept in motion in their respective orbits by ________

A. heir great size and spherical shape
B. he rotation and density
C. ravitation and centrifugal force
D. otation of the sun on its axis
Answer» D. otation of the sun on its axis
3.

Comets moves around the

A. arth
B. enus
C. un
D. upiter
Answer» D. upiter
4.

The time required by moonlight to reach the earth is ________

A. sec
B. .3 sec
C. sec
D. .3 sec
Answer» C. sec
5.

The Planet amongst the following (other than Saturn), that shows a faint ring is ________.

A. arth
B. upiter
C. ars
D. luto
Answer» C. ars
6.

The altitudes of heavenly bodies appear to be greater than they actually are. This is due to ________

A. ertical motion of these heavenly bodies
B. otions of the earth
C. tmospheric refraction
D. hese are visible because of light of the sun reflected from their surface
Answer» D. hese are visible because of light of the sun reflected from their surface
7.

The Planets that have no natural satellites are ________.

A. ercury and Venus
B. arth and Mars
C. upiter and Saturn
D. ranus and Neptune
Answer» B. arth and Mars
8.

Which one of the following planets takes the same number of days for rotation and revolution?

A. ars
B. enus
C. ercury
D. upiter
Answer» C. ercury
9.

Comets revolve around ________

A. un
B. arth
C. enus
D. o single heavenly body
Answer» B. arth
10.

Parsec is the unit of measurement of ________

A. ensity of stars
B. stronomical distance
C. rightness of heavenly bodies
D. rbital velocity of giant stars
Answer» C. rightness of heavenly bodies
11.

Which planet is known as 'Morning Star'?

A. ercury
B. enus
C. ars
D. upiter
Answer» C. ars
12.

Which of the following is called "Blue Planet"?

A. aturn
B. arth
C. upiter
D. ars
Answer» C. upiter
13.

"Sirius", the brightest star outside of the Solar System, is also called ________.

A. at star
B. og star
C. ox star
D. ion star
Answer» C. ox star
14.

The radiant energy of the sun is transmitted in the form of ________

A. hort waves
B. ong waves
C. articles
D. one of these
Answer» B. ong waves
15.

The Planet which comes close to the size of Earth is ________.

A. enus
B. upiter
C. aturn
D. ercury
Answer» B. upiter
16.

The exact time taken by the earth for single rotation on its own axis is ________

A. 4 hrs
B. 4 hrs 35 sec
C. 3 hrs 50 minutes 7.2 sec
D. 3 hrs 56 minutes 4.09 sec
Answer» E.
17.

The planet having thirteen moons is ________

A. enus
B. ars
C. ranus
D. eptune
Answer» E.
18.

The distance between the Earth and the Sun (in million kms) is ________

A. 11
B. 49
C. 68
D. 93
Answer» C. 68
19.

Foucault experiment is proof of which one of the following?

A. evolution of Earth
B. otation of Earth
C. otation of Moon
D. evolution of Moon
Answer» C. otation of Moon
20.

The correct sequence of planets in the descending order of their equatorial diameter is ________

A. ars, Mercury, Uranus, Earth
B. arth, Mars, Mercury, Uranus
C. ercury, Uranus, Mars, Earth
D. ranus, Earth, Mars, Mercury
Answer» E.
21.

Which is the nearest planet to Sun?

A. arth
B. ercury
C. ars
D. enus
Answer» C. ars
22.

The Srnith-tuttle comet will crash with Earth in ________

A. 106 AD
B. 116 AD
C. 126 AD
D. 136 AD
Answer» D. 136 AD
23.

In astrophysics, what is the name of hole in outer space which emits stars and energy?

A. lack Hole
B. zone Hole
C. steroid Belt
D. hite Hole
Answer» E.
24.

Which of the following celestial bodies is located farthermost to the Earth?

A. aturn
B. ranus
C. eptune
D. luto
Answer» E.
25.

The outermost layer of Sun is called ________

A. onvection zone
B. hotosphere
C. hromosphere
D. orona
Answer» E.
26.

The planet with the maximum number of satellites is ________.

A. ranus
B. upiter
C. aturn
D. eptune
Answer» D. eptune
27.

Which of the following is indicated by the colour of a star?

A. eight
B. istance
C. emperature
D. ize
Answer» D. ize
28.

Messenger satellite has been launched by NASA for the study of

A. ercury
B. enus
C. aturn
D. upiter
Answer» B. enus
29.

A blackhole is a ________

A. ontracted star with intense gravitational pull
B. tar with very low surface temperature
C. tar with no atmosphere
D. ulsating star
Answer» B. tar with very low surface temperature
30.

The orbit in which of the following planet is nearest to the Sun?

A. aturn
B. upiter
C. ars
D. ranus
Answer» D. ranus
31.

Which of the following scientist had proven that every planet has an elongated path?

A. alileo
B. ewton
C. opernicus
D. epler
Answer» E.
32.

Which of the following is the largest of the inner planets?

A. enus
B. ercury
C. ars
D. arth
Answer» E.
33.

Which two planets of the solar system have no satellites?%!

A. Mercury and Venus
B. Venus and Mars
C. Mercury and Mars
D. Venus and Neptune
Answer» B. Venus and Mars
34.

What is "Supernova"?%!

A. Comet
B. Asteroid
C. Meteor
D. Black Hole
Answer» E.
35.

What are Sun spots?%!

A. Regions on earth without winter climate
B. Desert areas on the sun
C. Dark patches on the surface of the sun which are cooler areas
D. Dark patches on the surface of the Sun resulting from a localised fall in the temperature to about 4000 K
Answer» E.
36.

On which of the following planets of the solar system does the sun rise in the west and set in the east?%!

A. Venus
B. Mars
C. Jupiter
D. Saturn
Answer» B. Mars
37.

Which of the following is called "Blue Planet"?%!

A. Saturn
B. Earth
C. Jupiter
D. Mars
Answer» C. Jupiter
38.

The brightest star in the sky is ________%!

A. Alfa Centauri
B. Proxima Centauri
C. Sirius
D. Sun
Answer» E.
39.

The planets are kept in motion in their respective orbits by ________%!

A. Their great size and spherical shape
B. The rotation and density
C. Gravitation and centrifugal force
D. Rotation of the sun on its axis
Answer» D. Rotation of the sun on its axis
40.

The orbit in which of the following planet is nearest to the Sun?%!

A. Saturn
B. Jupiter
C. Mars
D. Uranus
Answer» D. Uranus
41.

Which of the following celestial bodies is located farthermost to the Earth?%!

A. Saturn
B. Uranus
C. Neptune
D. Pluto
Answer» E.
42.

Which is the nearest planet to Sun?%!

A. Earth
B. Mercury
C. Mars
D. Venus
Answer» C. Mars
43.

The distance between the Earth and the Sun (in million kms.) is ________%!

A. 111
B. 149
C. 168
D. 193
Answer» C. 168
44.

The Planet which comes close to the size of Earth is ________.%!

A. Venus
B. Jupiter
C. Saturn
D. Mercury
Answer» B. Jupiter
45.

Which of the following is indicated by the colour of a star?%!

A. Weight
B. Distance
C. Temperature
D. Size
Answer» D. Size
46.

The mass of Jupiter is almost%!

A. Tenth of the mass of the Sun
B. One Thousandth of the mass of the Sun
C. Hundred of the mass of the Sun
D. Half of the mass of the Sun
Answer» C. Hundred of the mass of the Sun
47.

*$_Which of the following planets do not have satellite??

A. Mars and Venus
B. Mercury and Venus
C. Mars and Mercury
D. Neptune and Pluto
Answer» C. Mars and Mercury
48.

*$_The distance between Earth and Sun is maximum on??

A. 10959
B. 44166
C. 44805
D. 38169
Answer» E.
49.

*$_Twelve constellations referred to as zodiac are ________?

A. Signs of Roman gods
B. Imaginary region that encompass the path of the planets
C. A group of stars
D. None of these
Answer» D. None of these
50.

*$_Which of the following is the largest planet??

A. Jupiter
B. Venus
C. Saturn
D. Uranus
Answer» B. Venus