What is entropy of a pen?

Replies

• 

  arsh86

  this Ques was asked in CAT interview.
  plz help me and tell me the ans.
• 

  gohm

  No need to "bump" the post within a day, I'm sure some CEans will offer some advice. =) Have you searched on the net?
• 

  raj87verma88

  This is a trick question to check your wit. Similar to asking, What is the color of wall behind you? etc. If you stutter and think, then it shows you lack confidence. Entropy also depends on the structure and different materials have different structure. You are not supposed to know the exact value.
  
  
  From Wiki:
  Entropy is defined by an equation dS = dq/T.
  It determines a body's free energy.
  
  Entropy increase has often been defined as a change to a more Disordered State at a molecular level. In recent years, entropy has been interpreted in terms of the "Entropy %28Energy Dispersal%29" of energy. Entropy is an Extensive Quantity State Function that accounts for the effects of Irreversibility in Thermodynamic System.
  In terms of Statistical Mechanics, the entropy describes the number of the possible Microstate %28Statistical Mechanics%29 of the system. The statistical definition of entropy is the more fundamental definition, from which all other definitions and all properties of entropy follow.