6. For which of following reversible reaction the degree of dissociation or association depends upon the value of temperature but NOT on value of pressure? (a) N2(g)+3H2(g)2NH3(g) (b) N2O4(g) 2NO2(g) (c) 3C2H2(g) C6H6(g) (d) H2(g)+12(g): 2HI(g) 7. Which of following is a extensive state variable? (a) W (work done) (b) G (Gibb's free energy) (c) Cm (molar heat capacity) (d) A,H (standard molar enthalpy of formation) Which of the following is a set of paramagnetic species ? 8. (a) O (g), B (g) 9. (b) O2(g), C(g) (c) B(g), C (g) (d) H,O Which of the following pair of ideal gases will diffuse at same rate under identical condition of P and T? (Molar mass of C = 12 g, H = 1 g, O= 16 g, N = 14g, He = 4 g) (a) C2H4(g) and C3H6 (g) (c) He(g) and H2(g) (b) CO2 (g) and O3(g) (d) N2H4(g) and O2(g) 10. Given that bond energies of N = N,H-H and NH are 900 kJ/mole, 350 kJ/mole and 450 kJ/mole respectively. Value of A,HH3 (g) would be: (a) -150 kJ/mole (b) -300 kJ/mole (c) -425 kJ/mole (d) -375 kJ/mole