1. Which ion is kinetically inert?
= Co2+
2. Which is statement is correct
= In a dissociative interchange mechanism, bond breaking dominates over formation
3. The reaction of [PtCL4]2- WITH [NH3] and [PtCL4]2- Followed by NH3(reaction 2) are way of preparing
= 1)cis- [Ptcl2(NH3)2]
2) trans- [Ptcl2 (NH3) (NO2)]-
4. Which is statement about the Trans effect and the Trans influence is correct?
= The Trans influence is a ground state effect, whereas the Trans effect has a kinetic
origin
5. The usual from the experimental rate law for substitution in square planner Pt (2)
complexes contains two terms: rate = k1[PtL3X]+k2[PtL3X][Y]where PtL3X is the
starting complex and Y is the entering group. The reaction for the two-teams law is that
Ans..The solvent competes with Y in the rate-determining step
6. Which ordering correctly shows the variation in rates of water exchange in high spin aqua complexes [M(OH2)6] n+?
= Cr2+ > Cr3+
7. The first step in the Eigen Wilkins mechanism for ML6 undergoing Y for L
substations is;
= Formation of a weakly bound encounter complex
8. Marcus Hush theory applied to….
= Outer sphere electron transfer
9. Recemization of a chiral complex such as [Cr(ox)3]3- is least likely to occur by
= a dissociate pathway
10.Which statement is incorrect about the mechanism of electron transfer?
= Marcus hush theory applies to inner sphere mechanism
11.in the base catalyzed substitution of CL- by [OH]- in [Co(NH3)5Cl]2+ under strongly
basic conditions the first step in the mechanism is….
= Conversion of an ammine ligand
12.In an inner sphere electron transfer reaction which of the following ligand could not act as a bridging ligand?
= 1,10 phenanthroline
13.which ordering correctly describes the tendency of a ligand to direct ligand
substitution in a squre planner complex to a position opposite to itself
= [CN]- > [NO2]- > Br- > NH3
14.Anation is…..
= The substitution of an uncharged ligand by an anionic ligand
15.Which experimental technique operates on the faster timescale?
= Nanosecond flash photolysis
16.Three of the following ions are kinetically inert,one is labile.Which ions is labile?
= Ti3+
17.For a ligand substitution reaction, which statement about the volume of activation
is correct?
= A large negative value of delta V+ indicates an associates mechanism
18.The average residence time for an H2O molecule in the first coordination sphere of
[Cs(OH2)8]+ is approximately 10 -10 s. The value of the water exchange rate constant
is therefore
= 10 10 s-1
19.Inner sphere electron transfer is a type of the following reaction..
= Redox
20.Inert complex is defined as
= Complexes for which ligand exchanging is slow
21.The trans effect of CO is explained by
= VBT
22.Bonds are neither made nor broken in
= Outer sphere reactions
23.Which factor affects electron transfer reaction
= All these
24.Electron transfer reaction between two dissimilar metal ions are called
= Cross reaction
25.Trans effect is related to
= Square planner complex
26.Mossbauer spectroscopy is related to…
= Nuclear spin
27.The source used in MB spectroscopy is
= Excited Co
28.The standard for Fe in MB spectroscopy is
= Sodium nitroprusside
29.The standard for Sn in MB spectroscopy is
= Barium stagnate
30.Energy required for excitation of Fe in MB spectroscopy is
= 2.3 * 10-25 J
31.The purpose of using large crystal of excited cobalt in MB spectroscopy was
= To minimize recoling energy
32.Phononic vibrations occurs in
= Solid state
33.Doppler effect is related to
= sound frequency
34.Intereaction responsible of the electronic wave function with the nucleus is
= Coulombil interaction
35.The formula for sodium nitroprusside is…..
= Na2[Fe(CN)5NO]
36.In case of Fe the presence of p or d electron will
= increase the isomer value
37.In case of Sn the presence of p or d electron will
= Decrease the isomer value
38.The order of isomer shift value in Fe is as
= 𝛿= Fe < Fe+ < Fe3+ < Fe2+
39.The electronegative element attached to the Fe
= increase the isomer value
40.selection rule for Mossbauer spectroscopy is
= both ……
41.In case of 57Fe and 119Sn the value of nucleus spin in ground and excited state are
= ½ AND 3 2⁄
42.Sodium nitroprusside has
= Spherical ligand symmetry
43.If both the ligand and electronic symmetries are spherical then electric field
gradiant will be
= Absent
44.The Spherical electronic symmetrical be occur in case of potassium ferricyanide
complex is
= Low spin
45.In case of 61Ni the value of nucleus spin in ground and excited state are
= 3/2 and 5/2
46.The low spin Fe(CO)5 gives quadrupole splitting
= Yes
47.In presence of magnetic field how many magnetic lines are observed for Fe
= 5
48.Mossbauer effect is related to
= Resonance fluroscence of 𝛾
49.How many MB signals are observed for [IF6]+ and [IF6]-
= 1 and 2
50.The order of isomer shift value in Sn is as
= 𝛿= Sn+4 < Sn+3 < Sn < Sn+ < Sn+2
51.Which of the following is not category of catalysis
= Artificial
52.Which of the following is an example of homogeneus catalysis
= Enzyme catalyst
53.Incorrect statement
= Intermiduate compound formation theory fails to explain the function of a catalyst
in homogeneus reaction
54.Which of the following step is the rate determining step of contact theory
= Chemical reaction at surface
55.The factor which determine the activity of hetrogeneos catalyst is
= Total surface area number of active sites and method of preparation
56.Which statement about catalyst is incorrect
= The presence of catalyst speed up a reaction
57.Which of the following criteria is a least important for homogeneous organometallic
= The catalyst must be contain a third row d-block metal
58.Match the compound formula to its application as a catalyst or catalyst precursor in Stated Process which pair is incorrect
= HRh(PPh3) ; asymmetric hydrogenation
59.Hydroformylation of alkenes may lead to alcohol and aldehyde product which
statement is correct
= The regioselectivity of the reaction gives the Ni aldehyde ratio
60.In the Tennessee Eastmann acetic anhydride process catalyst is cis- [Rh(CO)2I2]- which sequence of step best describes the primary catalytic cycle
= Oxidative addition of MeI ; Me migration CO addition ; elimination of MeC(O)I
61.Which statement is incorrect of CO on a metal (M) surface?
= The CO molecules must be terminally bound
62.Which statement is incorrect about the industrial haber process for NH3
production.
= A high temperature needed because the forward reaction is endothermic.
63.The following statements are about catalytic converters which one is incorrect?
= Rh catalysis the oxidation of NO
64.In the hydrogenation of alkenes using Wilkinson’s catalyst
= Oxidative addition of H2
65.A key feature of the Fischer Tropsch process is
= Hydrocarbon formation
66.Which step taken from a catalytic cycle is an example of reductive elimination
= Loss of RCH2CH3 from Rh(H2)(CO)(PPh3)2(CH2CH2R)
67.Which of the following compounds is a 16-electron species and is an active catalysis
= HCo(CO)3
68.Typical Grubb’s catalysts contain
= Ru ; a carbene ligand
69.Adsorption of a species X onto a surface X bond formation is called
= chemisorptions
70.Which statement is incorrect about zeolites
= No Zeolites are aluminosilicate
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