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  1. Materials for rain proof coats and tents owe their water proof properties to

    2. A.

     Surface tension
    B.

     Viscosity
    C.

     Specific gravity
    D.

     Elasticity

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    Answer : Option A

    Explanation :

    Materials for rain proof coats and tents owe their water proof properties to Surface Tension. The surface of a liquid behaves like an elastic membrane and therefore, has a tendency to contract. This property of liquid is called Surface Tension.

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