1.The work done on an object does not depends upon the-
A.Displacement
B.Force applied
C.Angle between force and displacement
D.Initial velocity of the objects
2.Water stored in a dam possesses-
A.No energy
B.Electrical energy
C.Kinetic energy
D.Potential energy
3.When a body falls freely towards the earth, then its total energy-
A.Increase
B.Decrease
C.Remain constant
D.First increase and then decrease
4.Which is the ultimate source of energy-
A.Water
B.Sun
C.Uranium
D.Fossil fuel
5.Which of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilization?
A.Nuclear energy
B.Thermal energy
C.Solar energy
D.Geothermal energy
6.Which part of the solar cooker is responsible for green house effects?
A.Coating with black color inside the box
B.Mirror
C.Glass sheet
D.Outer cover of the solar cooker
7.The presence of starch in raw food can be tested with-
A.Dilute Iodine solution
B.Dilute HCL solution
C.Dilute NaOH solution
D.All of these
8.Which of the following does not conduct electricity?
A.Solid NaCl
B.Brine solution
C.Copper
D.None of the above
9.In moving from outer most shell to inner most shell, the energy of shells?
A.Increase
B.Decrease
C.Remain constant
D.Cannot be predicted
10.Which part of the eyes is adjustable in accordant with the light conditions?
A.Iris
B.Retina
C.Pupil
D.Lens
