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11th Class Physics Mechanical Properties of Fluids / तरलों के यांत्रिक गुण Question Bank Mechanical Properties of Fluids Conceptual Problems

  • question_answer
    What is the importance of (i) wetting agents used by dyers, and (ii) water proofing agents?

    Answer:

                    (i) They are added to decrease the angle of contact between the fabric and the dye so that the dye may penetrate well. (ii) They are used to increase the angle of contact between the fabric and water to prevent the water from penetrating the cloth.


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