Question 41. The order of polarity of NH3, NF3 and BF3 is

Question 42. From a carboxymethyl-cellulose column at pH 6.0, arginine, valine and glutamic acid will elute in
the order

Question 43. An intermediate formed during the hydroformylation of olefins using Co2(CO)8 as catalyst is

Question 44. Symmetry operations of the four C2 axes perpendicular to the principal axis belong to the same
class in the point group(s)

Question 45. Consider the reactionH2 + C2H4 → C2H6 The molecular diameters of H2 and C2H4 are 1.8 Ã… and 3.6 Ã… respectively. The pre-exponential factor in the rate constant calculated using collision theory in m3 (mole)-1 s-1 is approximately (For this reaction at 300 K, [(8kbT)/πμ]1/2 NA = 1.11 * 1027 m(mole)-1 s-1, where the symbols have their usual meanings)

Question 46. At 298 K, the EMF of the cell Pt|H2(1 bar)|H+(solution)||CI-|Hg2CI2|Hg is 0.7530 V. The standard potential of the calomel electrode is 0.2802 V. If the liquid junction potential is zero, the pH of the solution is

Question 47. The molecular partition function of a system is given by q(T) = [(kbT)/hc]3/2 [(8Ï€3mkbT)/h2]3/2, where the symbols have their usual meanings. The heat capacity at constant volume for this system is

Question 48. For a face centered cubic lattice, the Miller indices for the first Bragg's peak (smallest Bragg angle)
are

Question 49. For the titration of a 10 mL (aq) solution of CaCO3, 2 mL of 0.001 M Na2EDTA is required to
reach the end point. The concentration of CaCO3 (assume molecular weight of CaCO3 = 100) is

Question 50. The ground state term of [Ni(H2O)6]2+ is