1) which of the following is a contact force? a) friction b) magnetic c) gravity d) electrostatic 2) hosting a flag is related to a) push b) pull c) Push and Pull d) pressure 3) spring balance is used for measuring a) mass b) weight c) pressure d) speed 4) the force that is solid surface exerts on any object in the normal direction is called a) Muscular force b) Normal force c) Tension force d) Magnetic force 5) Normal force is a a) Pulling force b) Pushing force c) A and B both  d) None of these  6) Force acting due to the property of mass is  a) Electrostatic force b) Magnetic force c) Gravitational force d) Friction 7) The substances which reduce friction are called a) Lubricants b) Drag c) Friction d) Streamlined 8) When one day rolls over the surface of another body, the friction offered is called a) Sliding friction b) Static friction c) Rolling friction d) None 9) Friction can be increased by ..... a) powder b) rough surface c) smooth surface d) oil 10) This person having a) Rolling friction b) Static friction c) Sliding friction d) Fluid friction

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