Q91. Which one of the following stars is closest to the Earth?
(A) Polestar
(B) Alpha Centauri
(C) Sun
(D) absorbent
(C) Sun
Q92. When the duration of day and night is equal then the sun rays fall directly
(A) At the North Pole
(B) On the equator
(C) At the South Pole
(D) On the Tropic of Cancer
(B) On the equator
Q93. What is the reason for changing seasons?
(A) Earth’s rotation on its axis (rotation) and rotation around the Sun (rotation)
(B) Revolution of the earth around the sun
(C) Earth’s rotation around the Sun and its tilt on its axis
(D) Earth rotating on its axis and tilting on its axis
(C) Earth’s rotation around the Sun and its tilt on its axis
Q94. If the distance between the Sun and Earth is reduced by one-fourth, what will be most likely to happen?
(A) The earth will fall into the sun
(B) The earth will burn to ashes
(C) The length of our year will decrease
(D) The earth will fly into space
(C) The length of our year will decrease
Q95. There is a greater possibility of desertification on Earth
(A) Near 0° latitude
(B) Near 23° latitude
(C) Near 50° latitude
(D) Near 70° latitude
(B) Near 23° latitude
Q96. A ball dropped from an artificial satellite revolving around the Earth
(A) will go to the sun
(B) will go to the moon
(C) fall on the earth
(D) will continue to revolve around the earth in its orbit with the same period as the satellite
(D) will continue to revolve around the earth in its orbit with the same period as the satellite
Q97. In the structure of planet Earth, below the mantle, the core is made up of which one of the following?
(A) Aluminum
(B) Chromium
(C) Iron
(D) Silicon
(C) Iron
Q98. ‘The duration of a planet’s day and the inclination of its axis are approximately equal to the duration of the earth’s day and inclination.’ This statement is correct regarding which planet?
(A) About Uranus
(B) About Neptune
(C) About Saturn
(D) About Mars
(D) About Mars
Q99. Which one of the following conditions is most consistent with the presence of life on Mars?
(A) Atmospheric composition
(B) Thermal conditions
(C) Presence of ice caps and frozen water
(D) Presence of ozone
(C) Presence of ice caps and frozen water
Q100. The moons of Jupiter were discovered by which one of the following scientists?
(A) Newton
(B) Galileo
(C) Kepler
(D) Copernicus
(B) Galileo
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