Q.1:- The twin planet of the earth which resembles in size, density and mass is ?
- Venus
- Jupiter
- Mars
- Mercury
Ans:- (a) Venus
Q.2:- The earth completes one rotation on its axis in ?
- 24 Hrs.
- 23 Hrs. / 56 mins
- 23 Hrs. / 30 mins
- 23 Hrs. / 10 mins / 14.9 secs.
Ans:- (b) 23 Hrs. / 56 mins
Q.3:- The twinkling of a star is due to ?
- The variation in the intensity of light emitted by it with time
- The variation in the composition of the star with time
- The transit of other celestial objects across the line of sight
- The atmospheric refraction of starlight
Ans:- (d) The atmospheric refraction of starlight
Q.4:- Eclipses occur due to which optical phenomena ?
- Reflection
- Refraction
- Rectilinear Propagation
- Diffraction
Ans:- (c) Rectilinear Propagation
Q.5:- The mean radius of the earth is ?
- 3200 km
- 6400 km
- 9600 km
- 12800 km
Ans:- (b) 6400 km
Q.6:- The total number of planets revolving around the Sun are ?
- Seven
- Eight
- Five
- Six
Ans:- (b) Eight
Q.7:- Which one of the following is present in the largest amount in terms of percent by mass in the Earth’s crust ?
- Silicon
- Oxygen
- Carbon
- Calcium
Ans:- (b) Oxygen
Q.8:- How does the Sun get its energy ?
- From gravitational pressure
- From nuclear fission
- From nuclear fusion
- None of the above
Ans:- (c) From nuclear fusion
Q.9:- What is the correct sequence of the following in the context of the age of the Earth since its origin :
- Cenozoic
- Mesozoic
- Paleozoic
- Protozoic
Correct sequence is ?
- 4, 3, 1, 2
- 3, 4, 2, 1
- 3, 4, 1, 2
- 4, 3, 2, 1
Ans:- (d) 4, 3, 2, 1
Q.10:- The scientist who first discovered that the Earth revolves round the Sun was ?
- Newton
- Dalton
- Copernicus
- Einstein
Ans:- (c) Copernicus
Q.11:- The name of Saturn’s largest moon is ?
- Mimas
- Enceladus
- Titan
- Tethys
Ans:- (c) Titan
Q.12:- The Earth rotates around in axis pointing towards ?
- The Moon
- The Polar Star
- The Sun
- Venus
Ans:- (b) The Polar Star
Q.13:- Which planet in our solar system is nearly as big as the Earth ?
- Mercury
- Mars
- Venus
- Pluto
Ans:- (c) Venus
Q.14:- The outermost layer of the Sun is called ?
- Chromosphere
- Photosphere
- Corona
- Lithosphere
Ans:- (c) Corona
Q.15:- Which planet was named after the Roman God Zeus ?
- Mars
- Earth
- Venus
- Jupiter
Ans:- (d) Jupiter
Q.16:- The summer and winter seasons in a year are caused by ?
- Aphelion (farthest) and Perihelion (nearest) positions of the Earth from the Sun during the annual revolution
- Rotation in solar insolation
- Variation in solar insolation
- Revolution of the Earth on its inclined axis
Ans:- (d) Revolution of the Earth on its inclined axis
Q.17:- Mars atmosphere and Volatile Evolution Mission is ?
- A spacecraft launched by India
- A collaborative project of ISRO and NASA
- A spacecraft launched by USA
- A collaborative project of NASA and European Space Agency
Ans:- (c) A spacecraft launched by USA
Q.18:- The number of days for year in Mercury is ?
- 300
- 56
- 36
- 88
Ans:- (d) 88
Q.19:- The brightest planet is ?
- Jupiter
- Mars
- Venus
- Mercury
Ans:- (c) Venus
Q.20:- The Earth is at its maximum distance from the Sun on ?
- January 30th
- December 22nd
- September 22nd
- July 4th
Ans:- (d) July 4th
Q.21:- The horizontal wind circulation near the Earth’s surface is due to the
- Pressure Gradient
- Frictional Force
- Coriolis Force
Select the correct answer using the code given below :
- 1 only
- 2 and 3 only
- 1 and 3 only
- 1, 2 and 3
Ans:- (d) 1, 2 and 3
Q.22:- One degree of the circumference of the Earth measures (approx) ?
- 100 km
- 111 km
- 151 km
- 175 km
Ans:- (b) 111 km
Q.23:- What is the approximate equatorial circumference of the Earth ?
- 30,000 km
- 35,000 km
- 40,000 km
- 45,000 km
Ans:- (c) 40,000 km
Q.24:- The Earth rotate around its axis from ?
- North to South
- East to West
- South to North
- West to East
Ans:- (d) West to East
Q.25:- How many kilometers and represented by 1o of latitude ?
- 321 km
- 211 km
- 111 km
- 91 km
Ans:- (c) 111 km
