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Home Practice Tests Science Practice Tests Science Quiz - Question & Answers Set - 64
15 Questions
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Science Quiz - Question & Answers Set - 64

  • Question 3 :
  • Soap is used for washing clothes. Why ?

  • AIt reduces the surface tension of water so that water easily gets into the holes in cloths
  • BIt increases the surface tension of water so that water easily gets into the holes in cloths
  • CIt decreases the temperature of water and increases its velocity
  • DIt increases the temperature of water and increases its velocity
  • Question 6 :
  • Cutting is easy with the sharp end of a knife. It is due to:

  • AThe force acting on the sharp edge is more because the surface area is less
  • BThe force acting on the sharp edge is less because the surface area is less
  • CThe thrust on the edge is independent of the surface area
  • DNone of the above