Q. In the earliest days when life originated on earth, the atmosphere contained ________

Correct Answer

Oxygen bound to carbon

More Questions on Earth

  • Q. Bridgmanite is
    A)Earth's most abundant mineral
    B)A bridge on the river Thames
    C)Name of a game
    D)Name of a music
    Answer: Earth's most abundant mineral
  • Q. Evidence suggests that life on Earth has existed for about ________.
    A)35 million years
    B)3.5 million years
    C)35 billion years
    D)3.5 billion years
    Answer: 3.5 billion years
  • Q. What is the study of Moon called?
    A)Iridology
    B)Selenology
    C)Cosmology
    D)Planetology
    Answer: Selenology
  • Q. Which one of the following is the time required for the Earth to return to a given point in its orbit with reference to fixed star, called?
    A)Tropical year
    B)Lunar year
    C)Solar year
    D)Sideral year
    Answer: Sideral year
  • Q. The earth’s annual circuit round the sun covers a distance of ________
    A)966 million kms
    B)1,096 million kms
    C)1,036 million kms
    D)896 million kms
    Answer: 966 million kms
  • Q. The word used to describe the shape of earth is ________
    A)Sphere
    B)Flat
    C)Circle
    D)Oblate spheroid
    Answer: Oblate spheroid
  • Q. What are the imaginary lines touching both the poles of Earth called?
    A)Isobars
    B)Latitudes
    C)Longitudes
    D)Isotherms
    Answer: Longitudes
  • Q. What is the name of the maps, natural and manmade, portray the large forms?
    A)Graffito
    B)Thematic Maps
    C)Atlas Maps
    D)Topographic Maps
    Answer: Thematic Maps
  • Q. The most abundant metal in the Earth’s Crust is
    A)Aluminium
    B)Zinc
    C)Copper
    D)Iron
    Answer: Aluminium
  • Q. Variation in duration of day and night is due to: 1. rotation of earth on its axis 2. revolution of earth around the sun 3. inclination of earth at an angle of 66%.
    A)1 and 3
    B)1and 2
    C)2 and 3
    D)1, 2 and 3
    Answer: 2 and 3
  • Q. Why are winters more severe in Southern Hemisphere than in the Northern Hemisphere?
    A)Because of more iceberg activity in Southern Hemisphere
    B)Earth is tilted towards the Sun in the Northern Hemisphere
    C)Northern Hemisphere receives more sunlight
    D)Southern Hemisphere is less inhabited
    Answer: Because of more iceberg activity in Southern Hemisphere
  • Q. Masses of stars and galaxies are usually expressed in ________.
    A)Lunar mass
    B)Earth's mass
    C)Solar mass
    D)Neutron mass
    Answer: Solar mass
  • Q. Lunar eclipse does not occur every month because ________
    A)The moon's orbit is not all the time in the same plane as the earth
    B)The sun's orbit is not always in the same plane as the moon
    C)The moon revolves at a slower speed than the earth
    D)None of these
    Answer: The moon's orbit is not all the time in the same plane as the earth
  • Q. The word “Isoneph” represents the lines of equal
    A)Rain
    B)Cloudiness
    C)Salinity
    D)Pressure
    Answer: Cloudiness
  • Q. The largest amount of reflection of the solar radiant energy which is reflected back into space before reaching the earth’s surface is due to ________
    A)Snow and ice covered areas of the earth
    B)Clouds
    C)Water-bodies
    D)All the above reflect nearly the same amount
    Answer: Clouds
  • Q. How old is Earth, It is decided by which of the following processes?
    A)Gravity Method
    B)Geologic Time Scale
    C)Radiometric Dating
    D)Fossil Dating
    Answer: Radiometric Dating
  • Q. Which of the following is caused by the combine deffects of the gravitational forces exerted by the Moon and the Sun on sea levels?
    A)Tides
    B)Currents
    C)Runoff
    D)Waves
    Answer: Tides
  • Q. What is the position of the Earth when it is at the greatest distance from the Sun?
    A)Perihelion
    B)Aphelion
    C)Antipode
    D)Aldiatc
    Answer: Aphelion
  • Q. Which one of the following would have occurred if the earth had not been inclined on its own axis?
    A)The summers would have been of longer duration
    B)All the seasons would have been of same duration
    C)The seasons would not have changed
    D)The winters would have been of longer duration
    Answer: The seasons would not have changed
  • Q. The term ‘syzygy’ is referred to when the ________
    A)Moon and sun are at right angles with reference to the earth
    B)Earth is at perihelion and moon at perigee
    C)Earth is at apehelion and moon at apogee
    D)Moon, sun and earth lie along a straight line
    Answer: Moon, sun and earth lie along a straight line

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