1.Which of the following statements is correct regarding rods and cones in the human eyes?
A.Cones are sensitive to dim light
B.Cones are sensitive to bright light
C.Rods are sensitive to bright light
D.Rods can sense color
2.A ray of light incident on mirror A at an angle of 25◦ falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be
A.25
B.65
C.50
D.115
3.Part of the eye which controls the light entering is called-
A.Iris
B.Lens
C.Cornea
D.Retina
4.The change in season on the earth occurs because-
A.The distance between the earth and the sun is not constant
B.The axis of rotation of the earth is parallel to the plane of its orbit
C.The axis of rotation of the earth is perpendicular to the plane of its orbit
D.The axis of rotation of the earth is tilted with respect to the plane of its orbit
5.Suppose a new planet is discovered between Uranus and Neptune. Its time period would be-
A.Less than that of Neptune
B.More than that of Neptune
C.Equal to that of Neptune or Uranus
D.Less than that of Uranus.
6.An astronaut standing on the surface of the moon throws a ball upwards. The ball would-
A.Directly fall down from the point it is released
B.Hang in space
C.Go up and then come back to the surface of the moon
D.Keep going up never to come back
7.Morning star is the name given to –
A.Pole star
B.Planet Jupiter
C.Star Sirius
D.Planet venus
8.Sun appear to move from east to west around the earth. This means that earth rotates from –
A.East to west
B.North to south
C.West to east
D.West to north
9.Which of the following is not a green house gas?
A.Nitrogen gas
B.Water vapors
C.Methane gas
D.Carbon dioxide
10.Trees helps in reducing the pollution of our environment. Lakhs of trees are planted by people in the month of july every year. The occasion is called-
A.Forest conservation day
B.Plantation month
C.Van mahotsav
D.Wildlife week
