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Soap helps in cleaning clothes, because...

Soap helps in cleaning clothes, because

A

chemicals of soap change

B

it increases the surface tension of the solution

C

it absorbs the dirt.

D

it lowers the surface tension of the solution.

Text Solution

Verified by Experts

The correct Answer is:
D
Soaps decreases the surface tension of water so as to increase wetting ability of water which helps in cleaning clothes.
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TARGET PUBLICATION-SURFACE TENSION -EVALUATION TEST
  1. Soap helps in cleaning clothes, because

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  2. A drop of Volume V is pressed between the two glass plates so as to sp...

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  3. Assertion : When two soap bubbles having different radii are kept in c...

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  4. A capillary tube with very thin walls is attached to the beam of a bal...

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  5. One end of a glass capillary tube with a radius r is immersed into wat...

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  6. A capillary tube of radius r is lowered into water whose surface tensi...

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  7. A soap bubble of radius 'r' is blown up to form a bubble of radius 2r ...

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  8. Assertion : Pressure in bubble ( r ) in the atmosphere of pressure...

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  9. Assertion:- Rise of water level in capillary tube should be accounted ...

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  10. In gravity free space. The liquid in a capillary tube will rise to

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  11. Assertion : When there is a thin layer of water between two glass pla...

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  12. A glass capillary tube of radius r is placed vertically touching the s...

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  13. A capillary is dipped in water vessel kept on a freely falling lift, t...

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  14. Two spherical soap bubbles of radii r1 and r2 in vacuume coalesce unde...

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  15. Water rises to height of 5 cm in glass capillary tube . If the area of...

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  16. Suppose that 64 raindrops combine into a single drop . Calculate the r...

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  17. Two separate air bubbles (radii 0.002 cm and 0.004) formed of the same...

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  18. Two soap bubbles A and B are kept in a closed chamber where the air is...

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  19. Two parallel glass plates are held vertically at a small separation d ...

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  20. A glass rod of diameter d1 =1.5 mm is inserted symmetrically into a ...

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  21. When a loop of wire is dipped in a wetting liquid and is taken out. A ...

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