01) [36 marks, each 3 marks] Choose the appropriate answer, from the list, for the following questions. i- A solution of 0.4 moles of solute A, 0.2 moles of B and 0.5 moles of C. What will be the mole fraction of the A in the mixture? a- 0.36 b- 0.2 C- 0.3 d- 1.1 ii- The diffusivity of a binary gas mixture of non-polar and non-reaction system is proportional to the gas pressure as: a- P b-p-1 c- p2 d- p1.5 iii- For steady-state molecular diffusion of gas A through non diffusing B, the ratio N1/(NA+NB) is: - 0 b- 1 C-00 d- 0.5 iv- The diffusivity (D) in a binary mixture is related to the temperature (T) as: a- DOT b- D x 70.5 C- DO 71.5 d- Dar2 v- Which among the following is always true for mass transfer to occur? a-Difference in concentration b- Difference in Pressure C- Difference in temperature d-Difference in chemical potential vi- In which of the following conditions mass transfer will occur spontaneously? C and z are concentration and distance respectively. a-dC/dz > 0 b-dc/dz