Properties of Matter – MCQ’s

MCQ’s
Chapter 7 – Properties of Matter
Class 9 Physics Notes
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Properties of Matter – MCQ’s

  1. The property of the matter due to which it restores its size and shape when force ceases to act on it:

(a) Inertia

(b) Elasticity ✓

(c) Permittivity

(d) Rigidity

  1. The force that acts on unit area of an object and thus changes its shape or size:

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(a) Stress ✓

(b) Strain

(c) Yong’s Modulus

(d) Elastic limit

  1. In system international, the unit of stress is:

(a) Nm-2    ✓

(b) Nm-1

(c) Nm

(d) None of above

  1. The ratio of change in length to the original length is:

(a) Stress

(b) Tensile strain      ✓

(c) Young’s Modulus

(d) Elastic limit

  1. When stress is increased, the strain also goes on: (LHR 2016)

(a) Decreasing

(b) Increasing ✓

(c) Constant

(d) All of above

  1. The law about stress and strain is presented by:

(a) Hook   ✓

(b) Newton

(c) Joule

(d) Archimedes

  1. According to Hooke’s law, within the elastic limit stress and strain has ————– proportion:

(a) Inverse

(b) Direct ✓

(c) Same

(d) None of above

  1. The ratio of tensile stress and tensile strain is:

(a) Variable

(b) Pascal’s Law

(c) non-uniform

(d) None of above ✓

  1. The unit of Young’s modulus is:

(a) Nm-2    ✓

(b) Nm-1

(c) Nm

(d) None of above

  1. The force exerted perpendicularly on unit area of an object is called:

(a) Strain

(b) Constant

(c) Pressure   ✓

(d) Work

  1. The unit of pressure is:

(a) Nm-2

(b) Nm-1

(c) Pa

(d) Both a & c ✓

  1. Pressure depends upon:

(a) Density

(b) Depth

(c) Temperature

(d) Both a & b ✓

  1. If a body is at a depth of ‘h’ from the liquid surface of density ‘ρ’, then the pressure ‘P’ on that body is:

(a) P = w/t

(b) P = ρgV

(c) P = ρgh ✓

(d) P = F/a

  1. The law about pressure on the object is presented by:

(a) Joule

(b) Pascal    ✓

(c) Newton

(d) Galileo

  1. Hydraulic press is based on: (GRW 2014)

(a) Joule’s law

(b) Pascal law ✓

(c) Newton’s law

(d) Young’s Modulus

  1. If pressure is exerted on a liquid, liquid transmits it:

(a) Variably

(b) Equally

(c) In all directions

(d) both b & c ✓

  1. Hydraulic brake works on the principle of: (GRW 2014)

(a) Hydraulic press

(b) Pascal law     ✓

(c) Joule’s law

(d) Both a & b

  1. —————– tells about the floating and sinking of objects:

(a) Pascal’s law

(b) Newton’s law

(c) Archimedes principle        ✓

(d) None of them

  1. Due to pressure difference on an object, an upward force acts on the object known as:

(a) Weight

(b) Buoyant force      ✓

(c) Stress

(d) All of above

  1. Buoyant force is equal to the ———- of the liquid displaced by the object:

(a) Volume

(b) Density

(c) Weight        ✓

(d) All of above

  1. The object will float on the liquid surface when:

(a) W > F

(b) W < F  ✓

(c) W = F

(d) None of above

  1. The object will sink in the liquid surface when:

(a) W > F      ✓

(b) W < F

(c) W = F

(d) None of above

  1. Submarine works on the principle of:

(a) Pascal’s law

(b) Newton’s law

(c) Archimedes principle   ✓

(d) None of them

  1. When temperature of the gas increases, gas pressure ————–:

(a) Increases   ✓

(b) Decreases

(c) Remains same

(d) None of above

  1. If quantity of the gas is increased in the container then gas pressure ——-:

(a) Increases ✓

(b) Decreases

(c) Remains same

(d) None of above

  1. According to Kinetic Molecular theory, gases exert pressure on the walls of the container due to their:

(a) Weight

(b) Mass

(c) Collisions

(d) All of above ✓

  1. The molecules of the matter are always remain in the state of:

(a) Rest

(b) Plasma

(c) Motion   ✓

(d) Tension

  1. The energy possessed by the molecules of the matter is due to its motion:

(a) P.E.

(b) K.E.     ✓

(c) Sound

(d) None of above

  1. When temperature of the matter increases, intermolecular forces ——:

(a) Increases

(b) Decreases ✓

(c) Remains same

(d) None of above

  1. Molecules of which state of matter have strongest attractive for

(a) Solid   ✓

(b) Liquid

(c) Gasses

(d) Plasma

  1. How many states of mother are?

(a) 2

(b) 3

(c) 4        ✓

(d) many

  1. Weakest attractive forces are in

(a) solid

(b) liquid

(c) gases     ✓

(d) Plasma

  1. Weakest attractive forces are in

(a) solid

(b) liquid

(c) gases     ✓

(d) plasma

  1. Ionic state of matter is called (GRW 2013)

(a) gas

(b) plasma   ✓

(c) liquid

(d) none of these

  1. Plasma is

(a) Good conductor

(b) Bad conductor

(c) Semi conductor   ✓

(d) non conductor

  1. Unit of density (LHR 2013)

(a) kg m3

(b) kg m–2

(c) kg m–3     ✓

(d) kg m2

  1. Unit of pressure is (LHR 2013)

(a) Nm–2

(b) Pa

(c) Nm

(d) Both a & b ✓

  1. The instrument used to measure atmospheric pressure

(a) Colorimeter

(b) Hypsometer

(c) Barometer          ✓

(d) None of these

  1. A solid object is:

(a) Not elastic below the elastic limit

(b) Elastic above the elastic limit

(c) Elastic below the elastic limit     ✓

(d) None of above

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