Multiple choice

Materials for rain proof coats and tents owe their waterproof properties to

  1. surface tension

  2. viscosity

  3. specific gravity

  4. elasticity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Waterproof fabrics often rely on the hydrophobic nature of their coating, which increases the contact angle of water droplets. This phenomenon is governed by surface tension, preventing water from penetrating the pores of the material.

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