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Soap helps in cleaning clothes because...

Soap helps in cleaning clothes because

A

It increases the angle of contact between the soap and the clothes

B

It increases surface tension of solution

C

It absorbs dirt

D

It lowers surface tension of solution

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Verified by Experts

The correct Answer is:
D
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MBD PUBLICATION-MECHANICAL PROPERTIES OF FLUID (LIQUID AT REST)-QUESTION BANK
  1. If the surface tension of a rectangular film of soap solution is T and...

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  2. The relation between surface tension and surface energy

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  3. Soap helps in cleaning clothes because

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  4. A wire ring is radius is r and a liquid film is formed across it. F is...

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  5. Platinum wire rings of radius 2.5 cm floats horizontally on the surfac...

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  6. Work done in blowing a soap bubble of surface tension T and diameter '...

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  7. If surface tension of liquid is 72 dyne/cm, then the work done in incr...

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  8. Find the work done in blowing a soap bubble of radius 0.02 m. S.T. of ...

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  9. Elight water drops, each of radius 'r' collide to form a bigger drop o...

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  10. A liquid drops of radius R breaks up into 64 small drops of equal size...

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  11. A big drops of a liquid of radius 2 cm splits into 1000 small droplets...

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  12. A drops of mercury, 2mm in a diameter is broken up into 1000 droplets,...

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  13. Compare the amount of work done in blowing soap bubbles of radii 3cm t...

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  14. 10 cm long wire is placed horizontally on the surface of water and is ...

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  15. The work done in increasing the size of soap film from 10cm xx 6cm to ...

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  16. The work done to from a layer of soap solution of size 10cm xx 10cm wi...

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  17. Surface tension of a liquid is 70 dyne/cm, in M.K.S. system it will be

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  18. A drops of mercury, 2mm in a diameter is broken up into 1000 droplets,...

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  19. The S.T. of water is 7.2 xx 10^-2 N/m. The work required to break a dr...

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  20. A soap film is formed on a rectangular wire frame of size 5cm xx 2cm. ...

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