Q941. Which one of the following is heaviest planet of our Solar System?
A Jupiter
B Venus
C Pluto
D Saturn
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Correct answer: Jupiter
Q942. Which one of the following conditions is most relevant for the presence of life on Mars?
A Atmospheric compositon
B Thermal conditions
C Occurrence of ice cap and frozen water
D Occurrence of ozone
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Correct answer: Occurrence of ice cap and frozen water
Q943. The duration of its day and tilt of its axis are almost identical to those of the Earth. This is true of
A Uranus
B Neptune
C Saturn
D Mars
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Correct answer: Mars
Q944. 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
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Correct answer: 26 May, 2008
Q945. Which one of the following may have alien life because of a very conductive environment to life?
A Jupiter
B Mars
C Europa-The Jupiter’s Moon
D Moon-The Earth’s Moon
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Correct answer: Europa-The Jupiter’s Moon
Q946. World Earth Day is celebrated on
A 22 April
B 22 March
C 7 April
D 7 March
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Correct answer: 22 April
Q947. 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
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Correct answer: Iron
Q948. A ball thrown outside from an artificial satellite revolving round the Earth will
A Go to the Sun
B Go to the Moon
C Fall on the Earth
D Revolve round the Earth in the same orbit with the same time period as satellite
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Correct answer: Revolve round the Earth in the same orbit with the same time period as satellite
Q949. The possibility of desert on Earth is more
A Nearby 0º latitude
B Nearby 23º latitude
C Nearby 50º latitude
D Nearby 70º latitude
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Correct answer: Nearby 23º latitude
Q950. If the distance between Sun and 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 decrease
D Earth will fly into space
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Correct answer: The duration of our year will be decrease
Q951. Consider one special point at the Earth’s surface (e.g., City Delhi) its temperature at noon (e.g., 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 happen only in winter due to environmental precipitation
D In winters the Earth’s axis becomes more inclined towards Sun
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Correct answer: In winter the Sun rays falling on the Earth bends more towards the Earth’s surface in comparison to the summer
Q952. 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
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Correct answer: Earth’s revolution and inclination of its axis
Q953. Seasonal changes is caused by which one of special characteristic of Earth’s motion?
A Revolution around Sun
B Axial tilt by 23½ degree
C Both (A) and (B)
D Rotation on its axis
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Correct answer: Both (A) and (B)
Q954. 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
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Correct answer: Equator
Q955. 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
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Correct answer: Rotation of Earth on its axis
Q956. 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
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Correct answer: 23.5º from the elliptic axis
Q957. Earth’s axis is tilted at an angle of
A 23½ º
B 66½ º
C 33½ º
D 42½ º
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Correct answer: 23½ º
Q958. The equatorial circumference of the Earth is nearly
A 31,000 km
B 40,000 km
C 50,000 km
D 64,000 km
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Correct answer: 40,000 km
Q959. Approximately, how much distance per minute does Earth cover while revolving?
A 49 km
B 59 km
C 69 km
D 28 km
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Correct answer: 28 km
Q960. At which average speed the Earth revolve around the Sun?
A 20 km/sec
B 30 km/sec
C 40 km/sec
D 50 km/sec
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Correct answer: 30 km/sec