One mole of a monatomic ideal gas is taken through a cycle $ABCDA$ as shown in the $P-V$ diagram. Column $II$ gives the characteristics involved in the cycle. Match them with each of the processes qiven in Column $I$
Column $I$ Column $II$
$(A)$ Process $A \rightarrow B$ $(p)$ Internal energy decreases.
$(B)$ Process $B \rightarrow C$ $(q)$ Internal energy increases.
$(C)$ Process $C \rightarrow D$ $(r)$ Heat is lost.
$(D)$ Process $D \rightarrow A$ $(s)$ Heat is gained.
  $(t)$ Work is done on the gas.

  • A$(A) \rightarrow p, q, r \ and \ s,(B) \rightarrow q,(C) \rightarrow p, q, r \ and \ s,(D) \rightarrow p, q, r \ and \ s$
  • B$(A) \rightarrow p, r, \ and \ t,(B) \rightarrow p \ and \ r (C) \rightarrow q, \ and \ s,(D) \rightarrow  r \ and \ t$
  • C$(A) \rightarrow p, q, \ and \ t,(B) \rightarrow s \ and \ q (C) \rightarrow q, \ and \ t,(D) \rightarrow  s \ and \ r$
  • D$(A) \rightarrow q, r, \ and \ t,(B) \rightarrow r \ and \ t (C) \rightarrow r, \ and \ s,(D) \rightarrow  p \ and \ q$
IIT 2011, Diffcult
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