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{:(,"Column-I",,"Column-II"),((a),"Rever...

`{:(,"Column-I",,"Column-II"),((a),"Reversible adiabatic compression",(p),"Process in equilibrium"),((b),"Reversible vaporisation of liquid",(q),DeltaS_(system)lt0),((c),2N(g)rarrN_(2)(g),(r),DeltaS_("surrounding")lt0),((d),MgCO_(3)(s)oversetDeltararrMg(s)+CO_(2)(g),(s),DeltaS_("sublimation")=0):}`

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The correct Answer is:
`(A) rarr (,s); (B) rarr (p,r); (C) rarr (q,); (D)rarr (p,r)`
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{:(,"Column-I",,"Column-II"),((a),C ("s,graphite")+0_(2)(g)rarrCO_(2)(g),(p),DeltaH^(@)_("Combustion")),((b),C("s,graphite")rarrC(g),(q),DeltaH^(@)_("combustion")),((c),CO(g)+(1)/(2)O_(2)(g)rarrCO_(2)(g),(r),DeltaH^(@)_("atomization")),((d),CH_(4)(g)rarrC(g)+4H(g),(s),DeltaH^(@)("sublimation")):}

Match the process given in Column - I with the entropy change in Column - II {: ( "Column I", " Column II"),( "(a)Reversible adiabatic ideal gas compression.", " (p)"DeltaS_("surr") = 0 ) , ("(b)Reversible isothermal ideal gas expansion." , "(q)" DeltaS_("system") = 0),(" (c)Adiabatic free expansion " (p_(ext) = 0)" of an ideal gas" , "(r)" DeltaS_("surr") gt 0 ) , ( "(d)Irreversible isothermal ideal gas compression." , " (s)" DeltaS_("surr") lt 0 ):}

{:(,"Column-I",,"Column-II"),((a),(DeltaG_(system))_(T.P^(=0)),(p),"Process in equilibrium"),((b),DeltaS_(system)+DeltaS_("sorrrounding")gt0,(q),"Process is non-spontaneous"),((c),DeltaS_(system)+DeltaS_("Surrounding")lt0,(r),"Process is spontaneous"),((d),(DeltaG_(system))+_(T,P)gt0,(s),"System is unable to do useful work"):}

Delta S for the reaction , MgCO_(3)(s)rarr MgO(s)+CO_(2)(g) will be :

Predict the sign of DeltaS for the reaction : CaCO_(3)(s) overset(Delta) to CaO(s) + CO_(2)(g)

{:("column"-1,"Column"-2),((A)(DeltaG_("system"))_(T.P) = 0,(p) "Process is in equilibrium"),((B)DeltaS_("system")+DeltaS_("surrounding") gt 0, (q)"Process is nonspontaneous"),((C)DeltaS_("system") +DeltaS_("surroumding") lt 0 , (r) "Process is spontaneous"),((D)(DeltaG_("system"))_(T.P) gt 0,(s)"System is unable to do useful work"):}

{:("Column-I","Column-II"),((A)NH_3, "p linear"),((B)BeF_2, "q polar"),((C )H_2O, "r" mu "=0D"),((D)CO_2, "s Angular"):}