Q:
      
      
         
            
Which of the following represents a relation for ‘heat lost = heat gained’?
 
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: C) Principle of calorimetry         
         
Explanation: Heat lost by hot object = Heat gained by cold object
where we ignore heat gained or lost from/to the surroundings.
The study of heat gained and lost in this manner is often called Calorimetry.
       
      
      
      
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