Mark the correct options :

1.	Mark the correct options :
Answer» A SUSTEM X is thermal equilibrium with Y but not with Z. SYSTEM Y and Z may be in thermal equilibrium with each other. A system X is in thermal equilibrium with Y but not with Z. Systems Y and Z are not in thermal equilibrium with each other. A system X is NEITHER in thermal equilibrium with Y nor with Z. The systems Y and Z must be in thermal equilibrium with each other. A system X is neither in thermal equilibrium with Y nor with Z. The systems Y and Z may be in thermal equilibrium with each other. Solution :According to question, `T_(x)=T_(y)` x and y are in thermal equilibrium `T_(x)!=T_(z)` `:.T_(y)!=T_(z)"":.` Option (B) is CORRECT. Now `T_(x)!=T_(y)` and `T_(x)!=T_(z)` `:.` System Y and Z may be in thermal equilibrium and may not be. `:.` Option (D) correct.

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