Basic Principles & Properties of Matter
1. What is the most viscous liquid among the following?
a) Oil
b) Milk
c) Water
d) Petrol
Answer: a
2. The rise of oil in a wick occurs due to:
a) Density of oil
b) Viscosity of oil
c) Surface tension of oil
d) Pressure of oil
Answer: c
3. When cream is removed from milk, its density:
a) Increases
b) Decreases
c) Remains the same
d) May increase or decrease
Answer: a
4. The mass of an object:
a) Changes from place to place
b) Remains constant everywhere
c) Equals its weight
d) Increases at higher altitudes
Answer: b
5. When a stone is completely submerged in water, it displaces water equal to its:
a) Density
b) Specific gravity
c) Weight
d) Volume
Answer: c
6. Two rods, one copper and one steel, experience the same upthrust in water. This means they have:
a) Equal volume
b) Equal weight
c) Equal density
d) Equal mass
Answer: a
Motion & Inertia
7. When a bus suddenly starts, passengers tend to fall backward due to:
a) Inertia of rest
b) Inertia of motion
c) Inertia of direction
d) None of these
Answer: a
8. A cannonball’s trajectory after being fired is an example of:
a) Straight-line motion
b) Projectile motion
c) Hyperbolic motion
d) Horizontal motion
Answer: b
9. If a body moves in a circular path with constant speed, then:
a) Its acceleration increases
b) Its acceleration is zero
c) Its velocity keeps changing
d) Its velocity remains constant
Answer: c
10. If a ball is thrown upward, what is its velocity at the highest point?
a) 0 m/s
b) 4.9 m/s
c) 14.7 m/s
d) 20 m/s
Answer: a
11. If a ball is thrown upward, which of the following remains unchanged?
a) Acceleration
b) Speed
c) Potential energy
d) Distance
Answer: a
12. An object is said to be in static equilibrium when it is:
a) At rest
b) Moving in a circle
c) Moving with constant speed
d) Accelerating rapidly
Answer: a
13. Acceleration is:
a) Inversely proportional to force
b) Inversely proportional to mass
c) Directly proportional to mass
d) Directly proportional to force
Answer: d
Forces, Resistance & Effects
14. Friction can be reduced by:
a) Polishing surfaces
b) Using lubricants
c) Reducing contact area
d) All of the above
Answer: d
15. The force that resists sliding motion between two surfaces is called:
a) Centripetal force
b) Friction
c) Centrifugal force
d) Inertia
Answer: b
16. A large force applied to a rotating body results in a large:
a) Mass
b) Torque
c) Axis of rotation
d) Center of mass
Answer: b
17. The purity of a metal is determined using:
a) Pascal’s Law
b) Boyle’s Law
c) Archimedes’ Principle
d) Law of Conservation of Mass
Answer: c
18. A water drop spreads out on a clean glass surface, while mercury remains nearly spherical because:
a) Mercury is a metal
b) Mercury has higher density
c) Mercury’s cohesion > adhesion to glass
d) Water’s cohesion > adhesion to glass
Answer: c
19. A ball pen works on the principle of:
a) Viscosity
b) Boyle’s Law
c) Gravitational force
d) Surface tension
Answer: d