Q76. The Earth revolves around the Sun approximately-
- Ain 365.12 days
- Bin 365.25 days
- Cin 365.50 days
- Din 365.75 days
Show answer & explanation
Answer: B) in 365.25 days
Solar System
214 MCQ questions with answers and explanations · page 4 of 9
Q77. The natural satellite of the Earth is-
- AAryabhata
- BRohini
- CMoon
- DFortunate
Show answer & explanation
Answer: C) Moon
Q78. The reason for day and night is -
- Arotation of the Earth on its axis
- Bthe speed of the sun relative to the earth
- Ctilt of the Earth's axis
- Drevolution of the earth around the sun
Show answer & explanation
Answer: A) rotation of the Earth on its axis
Q79. Apart from the Sun, light reaches the Earth from the nearest star -
- Ain 4.2 seconds
- Bin 42 seconds
- Cin 4.2 years
- DAt 42 years old
Show answer & explanation
Answer: C) in 4.2 years
Q80. What is the distance of the Earth from the Sun?
- A107.7 million km.
- B142.7 million km.
- C146.7 million km.
- D149.6 million km.
Show answer & explanation
Answer: D) 149.6 million km.
Q81. How much time does it take for the Earth to complete one rotation on its axis?
- A24 hour
- B23 hours 56 minutes 4 seconds
- C23 hours 30 minutes
- D23 hours 10 minutes 2 seconds
Show answer & explanation
Answer: B) 23 hours 56 minutes 4 seconds
Q82. The duration of day and night on Earth is equal in -
- Aat the poles
- BAt the equator
- Con the Tropic of Capricorn
- Don the Tropic of Cancer
Show answer & explanation
Answer: B) At the equator
Q83. Equinox means the date when -
- ADay and night are of equal duration
- Bdays are longer than nights
- Cthe night is longer than the day
- DIt is the shortest day and the shortest night of the year
Show answer & explanation
Answer: A) Day and night are of equal duration
Q84. When is the longest day in the Southern Hemisphere?
- A21 June
- B23 September
- C21 March
- D22 December
Show answer & explanation
Answer: D) 22 December
Q85. The inclination of the earth's axis to the earth's orbital plane is -
- A90⁰
- B231/2⁰
- C0⁰
- D661/2⁰
Show answer & explanation
Answer: D) 661/2⁰
Q86. What is the number of satellites of the Earth?
- AZero
- BOne
- CTwo
- DEight
Show answer & explanation
Answer: B) One
Q87. Daylight is visible at the North Pole on June 21st
- Azero hours
- B12 hours
- C18 hours
- D24 hours
Show answer & explanation
Answer: D) 24 hours
Q88. The nearest planet to the Earth is-
- AMercury
- BVesper
- CJupiter
- DFortunate
Show answer & explanation
Answer: B) Vesper
Q89. Which planet is third in terms of distance?
- AMercury
- BVesper
- CEarth
- DFortunate
Show answer & explanation
Answer: C) Earth
Q90. What is the angle of the Earth's axis with the orbital plane while revolving on its orbit?
- A231/2⁰
- B661/2⁰
- C90⁰
- D0⁰
Show answer & explanation
Answer: B) 661/2⁰
Q91. On which of the following dates do the sun's rays fall directly on the equator?
- Aall the year
- B21 March
- C23 September
- D21 March and 23 September
Show answer & explanation
Answer: D) 21 March and 23 September
Q92. Which of the following stars is closest to the Earth?
- Apole Star
- BAlpha Century
- CSun
- Dseductive
Show answer & explanation
Answer: C) Sun
Q93. Who first proposed that the Sun is the center of our solar system and the Earth revolves around it?
- ANewton
- BGalileo
- CPanini
- DCopernicus
Show answer & explanation
Answer: D) Copernicus
Q94. When the duration of day and night is equal, the sun rays fall directly on
- Aat the North Pole
- BAt the equator
- Cat the South Pole
- Don the Tropic of Cancer
Show answer & explanation
Answer: B) At the equator
Q95. If the atmosphere is assumed to be removed from between the Earth and space, what will be the colour of the sky?
- ABlue
- BRed
- CWhite
- DBlack
Show answer & explanation
Answer: D) Black
Q96. The circumference of the Earth is approximately-
- A40232 KM
- B20032 KM
- C30052 KM
- D40032 KM
Show answer & explanation
Answer: D) 40032 KM
Q97. On which date is the shortest day in the Northern Hemisphere?
- A21 June
- B22 December
- C23 September
- D21 March
Show answer & explanation
Answer: A) 21 June
Q98. On which date is the longest day in the Northern Hemisphere?
- A21 March
- B21 June
- C23 September
- D22 December
Show answer & explanation
Answer: D) 22 December
Q99. What is the duration of the day at the poles?
- A3 month
- Bsix months
- Cnine months
- Dtwelve months
Show answer & explanation
Answer: B) six months
Q100. Which of the following planets has the highest average density?
- AJupiter
- BFortunate
- CEarth
- DMercury
Show answer & explanation
Answer: D) Mercury