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 given in Column I.

Answer

`A-P, R, T; B-P,R; C-Q, S; D-R, T`

Explanation

A-P, R, T, B-P, R, C-Q, S, D-R, T
(A) `A to B : V darr , "P constant" to T darr, U darr "and " Delta W = "is - ve"`
(B) `B to C : V "is sam e, P" darr T darr" No work is done."`
(C) `C to D : V uarr rArr T uarr, Delta U rArr + ve`
` Delta W = +ve`
(D) `D to A : V` decrease so `Delta W rArr -ve`
Final temperature is same so `Delta U = 0` and then `delta Q rArr - ve`.