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Mechanical Prop...

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  • Question 1
    4 / -1

    It is easy to wash clothes in hot water because its

  • Question 2
    4 / -1

    At which of the following temperatures, the value of surface tension of water is minimum?

  • Question 3
    4 / -1

    Two pieces of glass plate one upon the other with a little water in between them cannot be separated easily because of

  • Question 4
    4 / -1

    Small liquid drops assume spherical shape because

  • Question 5
    4 / -1

    Surface tension is an atomic/molecular property of

  • Question 6
    4 / -1

    Surface tension of water at 1.2 atmospheric pressure

  • Question 7
    4 / -1

    Adding detergents to water helps in removing dirty greasy stains. This is because
    1. It increases the oil-water surface tension
    2. It decreases the oil-water surface tension
    3. It increases the viscosity of the solution
    4. Dirty is held suspended surrounded by detergent molecules

  • Question 8
    4 / -1

    Two droplets merge with each other and forms a large droplet. In this process

  • Question 9
    4 / -1

    Radius of a soap bubble is ‘r\', surface tension of soap solution is T. Then without increasing the temperature, how much energy will be needed to double is radius ?

  • Question 10
    4 / -1

    A spherical liquid drop of radius R is divided into eight equal droplets. If surface tension is T, then the work done in this process will be

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