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Easy

Question

Water and turpentine oil (specific heat less than that of water) are both heated to same temperature. Equal amounts of these placed in identical calorimeters are then left in air

  1. Their cooling curves will be identical    
  2. A and B will represent cooling curves of water and oil respectively    
  3. B and A will represent cooling curves of water and oil respectively    
  4. None of the above    

The correct answer is: A and B will represent cooling curves of water and oil respectively


    As we know, Rate of cooling proportional to fraction numerator 1 over denominator s p e c i f i c blank h e a t left square bracket c right square bracket end fraction
    because c subscript o i l end subscript less than c subscript W a t e r end subscript
    rightwards double arrow open parentheses R a t e blank o f blank c o o l i n g close parentheses subscript o i l end subscript greater than open parentheses R a t e blank o f blank c o o l i n g close parentheses subscript W a t e r end subscript

    It is clear that, at a particular time after start cooling, temperature of oil will be less than that of water
    So graph B represents the cooling curve of oil and A represents the cooling curve of water

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