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Question

A container is filled with water at 4°C. At one time the temperature is increased by few degrees above 4°C and at another time it is decreased by few degrees below 4°C. One shall observe that:

  1. the level remains constant in each case    
  2. water overflows in both the cases    
  3. water overflows in the latter case, while come down in the previous case    
  4. in previous case water overflows while in later case its levels comes down    

The correct answer is: in previous case water overflows while in later case its levels comes down

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