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.

*$_The brightest star in the sky is ________?

A. Alfa Centauri
B. Proxima Centauri
C. Sirius
D. Sun
Answer» E.
2.

*$_While Venus is seen only for one to two hours either after sunset or before sunrise, Jupiter is seen for the whole night whenever it is visible in the sky. The reason for this is that ________?

A. Venus is much smaller than Jupiter
B. Venus is much closer to the earth than Jupiter
C. The orbit of Venus is inside the earth's orbit whereas the orbit of Jupiter lies outside the orbit of the earth
D. Venus reflects lesser amount of sunlight than Jupiter
Answer» D. Venus reflects lesser amount of sunlight than Jupiter
3.

*$_Super Nova is ________?

A. An asteroid
B. A black hole
C. A comet
D. A dying star
Answer» E.
4.

*$_How many days in one year on mercury??

A. 56
B. 88
C. 300
D. 36
Answer» C. 300
5.

*$_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
6.

*/*_Which of the following is indicated by the colour of a star??

A. Weight
B. Distance
C. Temperature
D. Size
Answer» D. Size
7.

*/*_On which of the following planets water cycle is available??

A. Jupiter
B. Earth
C. Mars
D. Venus
Answer» C. Mars
8.

*/*_The orbit in which of the following planet is nearest to the Sun??

A. Saturn
B. Jupiter
C. Mars
D. Uranus
Answer» D. Uranus
9.

*/*_The Planet which comes close to the size of Earth is ________.?

A. Venus
B. Jupiter
C. Saturn
D. Mercury
Answer» B. Jupiter
10.

*/*_The distance between the Earth and the Sun (in million kms.) is ________?

A. 111
B. 149
C. 168
D. 193
Answer» C. 168
11.

*/*_Which is the nearest planet to Sun??

A. Earth
B. Mercury
C. Mars
D. Venus
Answer» C. Mars
12.

*/*_Which of the following celestial bodies is located farthermost to the Earth??

A. Saturn
B. Uranus
C. Neptune
D. Pluto
Answer» E.
13.

*/*_Which of the following is called "Blue Planet"??

A. Saturn
B. Earth
C. Jupiter
D. Mars
Answer» C. Jupiter
14.

*/*_Which of the following planets?

A. Mars
B. Saturn
C. Uranus
D. Venus
Answer» E.
15.

*/*_The Planets that have no natural satellites are ________.?

A. Mercury and Venus
B. Earth and Mars
C. Jupiter and Saturn
D. Uranus and Neptune
Answer» B. Earth and Mars
16.

*/*_The correct sequence of the following planets in terms of gravity, in the descending order is ________?

A. Saturn, Earth, Neptune, Uranus
B. Neptune, Uranus, Saturn, Earth
C. Uranus, Earth, Saturn, Neptune
D. Earth, Uranus, Neptune, Saturn
Answer» E.
17.

*/*_The Planet amongst the following (other than Saturn), that shows a faint ring is ________.?

A. Earth
B. Jupiter
C. Mars
D. Pluto
Answer» C. Mars
18.

*/*_The planet that is nearly comparable to Earth as regards its size and mass is?

A. Pluto
B. Mars
C. Venus
D. Mercury
Answer» D. Mercury
19.

*/*_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
20.

*/*_The orbits of planets around the Sun, or of satellites around the Earth, can be ________?

A. Circular and elliptic
B. Circular and hyperbolic
C. Elliptic and parabolic
D. Parabolic and hyperbolic
Answer» B. Circular and hyperbolic
21.

*/*_"Sirius", the brightest star outside of the Solar System, is also called ________.?

A. Cat star
B. Dog star
C. Fox star
D. Lion star
Answer» C. Fox star
22.

*/*_Pulsar are?

A. Stars moving towards Earth
B. Stars moving away from Earth
C. Rapidly rotating stars
D. Stars with high temperature
Answer» D. Stars with high temperature
23.

*/*_Comets moves around the?

A. Earth
B. Venus
C. Sun
D. Jupiter
Answer» D. Jupiter
24.

*/*_Which of the following scientist had proven that every planet has an elongated path??

A. Galileo
B. Newton
C. Copernicus
D. Kepler
Answer» E.
25.

*/*_The outermost layer of Sun is called ________?

A. Convection zone
B. Photosphere
C. Chromosphere
D. Corona
Answer» E.
26.

*/*_The Srnith-tuttle comet will crash with Earth in ________?

A. 2106 AD
B. 2116 AD
C. 2126 AD
D. 2136 AD
Answer» D. 2136 AD
27.

*/*_Foucault experiment is proof of which one of the following??

A. Revolution of Earth
B. Rotation of Earth
C. Rotation of Moon
D. Revolution of Moon
Answer» C. Rotation of Moon
28.

*/*_The exact time taken by the earth for single rotation on its own axis is ________?

A. 24 hrs
B. 24 hrs 35 sec
C. 23 hrs 50 minutes 7.2 sec
D. 23 hrs 56 minutes 4.09 sec
Answer» E.
29.

%_Which one of the following statements regarding Shooting Stars is incorrect ?_%

A. They are meteors
B. They are the debris which got separated from a comet
C. They emit light due to extremely high temperature caused by friction while they are passing through earth's atmosphere
D. They are a kind of a star
Answer» E.
30.

%_The number of satellite of mercury is/are_%

A. 0
B. 1
C. 2
D. 16
Answer» B. 1
31.

%_Which planet is known as the Earth's Twin?_%

A. Venus
B. Mars
C. Uranus
D. Neptune
Answer» B. Mars
32.

%_What is the total number of planets move around the Sun?_%

A. Five
B. Eight
C. Seven
D. Six
Answer» C. Seven
33.

%_Pulsar are_%

A. Stars moving towards Earth
B. Stars moving away from Earth
C. Rapidly rotating stars
D. Stars with high temperature
Answer» D. Stars with high temperature
34.

%_The distance of the nearest star besides the sun from the earth is _________%

A. 4.9 x 11^11m
B. 95 x10^15 m
C. 4.3 light years
D. 4.2 light years
Answer» E.
35.

%_Which of the following planets of the solar system has the longest day?_%

A. Mercury
B. Jupiter
C. Venus
D. Earth
Answer» D. Earth
36.

%_The term 'meteor' is applied to an interplanetary body _________%

A. After it enters the atmosphere of the earth
B. After it enters the earth's atmosphere and explodes in mid air as a ball of fire
C. After it enters the earth's atmosphere and lands on the surface of the earth without exploding in mid-air
D. Before it enters the earth's atmosphere
Answer» C. After it enters the earth's atmosphere and lands on the surface of the earth without exploding in mid-air
37.

_ The four largest planets of the solar system in descending order are$?

A. Jupiter, Mercury, Saturn and Uranus
B. Mercury, Jupiter, Saturn and Neptune
C. Jupiter, Saturn, Uranus and Neptune
D. Jupiter, Mercury, Saturn and Neptune
Answer» D. Jupiter, Mercury, Saturn and Neptune
38.

_ Messenger' satellite has been launched by NASA for the study of$?

A. Mercury
B. Venus
C. Saturn
D. Jupiter
Answer» B. Venus
39.

_ Consider the following statements:1. The albedo of an object determines its visual brightness when viewed with reflected light.2. 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
Answer» B. 2 only
40.

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

A. Galileo
B. Newton
C. Copernicus
D. Kepler
Answer» E.
41.

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

A. 24 hrs
B. 24 hrs 35 sec
C. 23 hrs 50 minutes 7.2 sec
D. 23 hrs 56 minutes 4.09 sec
Answer» E.
42.

_ Foucault experiment is proof of which one of the following?$?

A. Revolution of Earth
B. Rotation of Earth
C. Rotation of Moon
D. Revolution of Moon
Answer» C. Rotation of Moon
43.

_ The Srnith-tuttle comet will crash with Earth in ________$?

A. 2106 AD
B. 2116 AD
C. 2126 AD
D. 2136 AD
Answer» D. 2136 AD
44.

_ The outermost layer of Sun is called ________$?

A. Convection zone
B. Photosphere
C. Chromosphere
D. Corona
Answer» E.
45.

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

A. Cat star
B. Dog star
C. Fox star
D. Lion star
Answer» C. Fox star
46.

_ Parsec' is the unit of measurement of ________$?

A. Density of stars
B. Astronomical distance
C. Brightness of heavenly bodies
D. Orbital velocity of giant stars
Answer» C. Brightness of heavenly bodies
47.

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

A. Mars
B. Venus
C. Mercury
D. Jupiter
Answer» C. Mercury
48.

_ 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
Answer» B. The predominant element in the composition of Earth is silicon
49.

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

A. Vertical motion of these heavenly bodies
B. Motions of the earth
C. Atmospheric refraction
D. These are visible because of light of the sun reflected from their surface
Answer» D. These are visible because of light of the sun reflected from their surface
50.

_ Which is the brightest planet of the solar system?$?

A. Jupiter
B. Mercury
C. Uranus
D. Venus
Answer» E.