Practice test

Mechanical properties of matter - Test Set 3

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    A boat floating in a tank is carrying some passengers. If the passengers drink water from the tank, how will it affect the water level of the tank?
    1. It will go down
    2. It will rise
    3. It will depend on the atmospheric pressure.
    4. It will remain same
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  2. Question 2

    Hydraulic press is based on:
    1. Archimedes law
    2. Pascal’s law
    3. Reynold’s law
    4. Bernoulli’s law
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  3. Question 3

    The freezing chest in refrigerator is kept near the top because:
    1. It is convenient to use.
    2. It reduces cost.
    3. It cools the remaining space by the process of conduction.
    4. Convection currents are set up
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  4. Question 4

    Pure water freezes at a temperature –
    1. 47° F
    2. 32° F
    3. 0° F
    4. 19° F
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  5. Question 5

    Water drops do not stick to the oily surface due to:
    1. Lack of adhesive force
    2. Surface tension
    3. Cannot mix each other
    4. Water is lighter than oil
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  6. Question 6

    Soap bubble attains spherical shape due to:
    1. Inertia
    2. Pressure
    3. Surface tension
    4. Viscosity
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  7. Question 7

    Materials for rain proof coats and tents owe their water proof properties to:
    1. Surface tension
    2. Viscosity
    3. Specific gravity
    4. Elasticity
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  8. Question 8

    Soaps clean surfaces on the principle of based on:
    1. Viscosity
    2. Floatation
    3. Elasticity
    4. Surface tension
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  9. Question 9

    Statement Detergent should be used to clean clothes.
    Assumption
    I. Detergents reduces surface tension of water to clear dirt.
    II. Detergents clear dirt and grease as well.
    1. Only Assumption II is implicit.
    2. Either Assumption I or II is implicit.
    3. Both Assumption I and II are implicit.
    4. Only Assumption I is implicit.
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  10. Question 10

    Which type/types of pen uses/use capillary action in addition to gravity for flow of ink?
    1. Fountain pen
    2. Ballpoint pen
    3. Gel pen
    4. Both ballpoint and gel pens
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  11. Question 11

    Consider the following statements, If there were no capillarity,
    I. It would be impossible to use a kerosene lamp.
    II. one would not be able to use a straw to consume a soft drink.
    III. the blotting paper would fail to function.
    IV. there would have been no plants on the earth.
    Which of the statements given above are correct?
    1. I, II and IV
    2. I, III and IV
    3. II and III
    4. I, II, III and IV
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  12. Question 12

    Bernoulli’s principle is based on which of among the following laws?
    1. Conservation of momentum
    2. Conservation of angular momentum
    3. Conservation of energy
    4. Conservation of mass
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  13. Question 13

    Along a streamline flow of fluid,
    1. the velocity of all fluid particles at a given instant is constant
    2. the speed of a fluid particle remains constant
    3. the velocity of a fluid particle remains constant
    4. the velocity of all fluid particles crossing a given position is constant
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  14. Question 14

    Two cars, passing each other at high speed, are in danger of side swiping because
    1. of the increase in air pressure in the space between them.
    2. of decrease in the velocity of air molecules between them.
    3. of decrease in air pressure in the space between them.
    4. of the increase in the velocity of air molecules between them.
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  15. Question 15

    Which one of the following statement is not correct?
    1. In steady flow, each particle may not follow the same path as taken by a previous particle passing through that point.
    2. In steady flow of a liquid, the velocity of liquid particles reaching at a particular point is the same at all points.
    3. Steady flow is also called streamlined flow.
    4. Two streamlines cannot intersect with each other.
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  16. Question 16

    With the rise of temperature, the viscosity of liquid:
    1. Increases
    2. Decreases
    3. Remains unchanged
    4. May increase or decrease depending on nature of liquid
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  17. Question 17

    If there were no gravity which of the following will not be there for a fluid?
    1. Viscosity
    2. Surface tension
    3. Pressure
    4. Opward thrust
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  18. Question 18

    Consider the following statements:
    I. The viscosity of a gas increases with rise in temperature.
    II. The viscosity of the liquid falls very rapidly with rise in temperature.

    Which of the statement(s) given above is/are correct?
    1. Only I
    2. Only II
    3. Both I and II
    4. Neither I nor II
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  19. Question 19

    On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:
    1. Mercury is a metal
    2. Density of mercury is greater than that of water
    3. Cohesion of mercury is greater than its adhesion with glass
    4. Cohesion of water is greater than its adhesion with glass
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  20. Question 20

    Two identical solid pieces, one of gold and other of silver, when immersed completely in water exhibit equal weights. When weighed in air (given that, density of gold is greater than that of silver)
    1. The gold piece will weigh more
    2. The silver piece will weight more
    3. Both silver and gold pieces weigh equal
    4. Weighing will depend on their masses
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