1) With reference to black holes, consider the following statements
i) It is extremely concentrated matter.
ii) The gravitational pull of Black Holes is so strong that, not even light, can come out from it.
iii) Black hole formation indicates the formation of a new star.
Which of the statements given above is/ are correct?
a) i and ii only b) ii and iii only c) ii only d) i, ii and iii
2) What is the difference between Meteor and Meteorite?
i) Meteors are smaller pieces of matter travelling at high speed in space, whereas meteorite can be stony, iron or stony-iron.
ii) Millions of meteors occur in earth’s atmosphere every day.
iii) If the meteoroid survive atmosphere friction and falls on the ground, it is called meteorite.
a) i and ii only b) i and iii only c) iii only d) i, ii and iii
3) With reference to comets, consider the following statements:
i) They are members of the solar system.
ii) They are small rock planetoids.
iii) They are found at the outer edges of the solar system
Which of the statement given above is/ are correct?
a) i and ii only b) i and iii only c) iii only d) i, ii and iii
4) On June 21 or 22, the earth is located in its orbit that the north polar end of its axis leans at the maximum angle 23.5◦ towards the sun. The Northern Hemisphere is tipped towards the sun. The event is named as?
a) The Perihelion b) The Aphelion c) The Summer Solstice
d) The Winter Solstice
5) Dykes are
a) Largest partially exposed pluton.
b) Large body of igneous rock formed beneath the Earth’s surface by intrusion and solidification of magma.
c) Also called sheet-tabular igneous intrusion emplaced parallel to the bedding of the enclosing rock.
d) Sheet like body which rises upward from a magma chamber and cuts discordantly through the bedding plane of country rocks.
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