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CSS Solved Papers
Physics Chemistry

Engineering :: Heat Transfer


  The thermal conductivity of a perfect heat insulator is
[A]. zero[B]. infinity
[C]. one[D]. between zero and infinity

Answer: Option B


Niraj kumar said:    
 
Answer BIs right

Niraj kumar said:    
 
The thermal conductivity of a perfect heat insulator is zero.

sakshi said:    
 
answer should be zero..thermal conductivity of a perfect heat conductor is infinity

a. jabbar said:    
 
if other than zero then plz give some details

kishan said:    
 
How .......?

sandhya said:    
 
Zero because thermal conductivity is more for good conducter and less for good insulator

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