[" 4.For which of the following processes,"Delta S],[" is negative? "],[" (a) C(diamond) "rarr C(" graphite ")],[" (b) "N_(2)(g,1atm)rarr N_(2)(g,5atm)],[" (c) "N_(2)(g,273K)rarr N_(2)(g,300K)],[" (d) "H_(2)(g)rarr2H(g)]