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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
The formula of the complex diamminechloro-(ethylenediamine) nitroplatinum (IV) chloride isA. `[Pt(NH_(3))_(2)Cl(en)NO_(2)]Cl_(2)`B. `Pt[Pt(NH_(3))_(2)(en) Cl_(2)NO_(2)]`C. `Pt[(NH_(3))_(2) (en) NO_(2) ] Cl_(2)`D. `Pt[(NH_(3))_(2) (en) NO_(2)Cl_(2)]` |
| Answer» Correct Answer - A | |
| 402. |
Hexaamminenickel(II) hexanitrocobaltate(III) can be written asA. `[Ni(NH_(3))_(6)]_(2) [Co(NO_(2))_(6)]_(3)`B. `[Ni(NH_(3))_(6)]_(3) [Co(NO_(2))_(6)]_(2)`C. `[Ni(NH_(3))_(6)][Co(NO_(2))_(6)]`D. `[Ni(NH_(3))_(6)(NO_(2))_(6)]Co` |
| Answer» Correct Answer - B | |
| 403. |
Which of the following statements is not correct ?A. `[CuCI_(4)]^(2-)` has a tetrahedral geometry and is paramagneticB. `[MnCI_(4)]^(2-)` has a tetrahedral geometry and is paramagneticC. `[NiCI_(4)]^(2-)` has a tetrahedral geometry and is paramagenitcD. `[Cu(NH_(3))_(4)]^(2+)` has a square planar geometry and is paramagnetic |
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Answer» Correct Answer - D (1) `Cu(3d^(10) 4s^(1)) rarr Cu^(2+) (3d^(9))` . Since `C1^(-)` is a weak field ligand, no rearrangement of electrons is possible. The hybridization is `sp^(3)` and the complex ion `[CuC1_(4)]^(2-)` is paramagnetic due to one unpaired electron. (2) `Mn(3d^(5) 4s^(2)) rarr Mn^(2+) (3d^(5))` . Since `C1^(-)` is a weak field ligand, no rearrangement of electrons is possible. The hybridization is `sp^(3)` and the complex ion `[MnC1_(4)]^(2-)` is paramagnetic due to 5 unpaired electrons. (3) `Ni(3d^(8) 4s^(2)) rarr Ni^(2+) (3d^(8))` . Since `C1^(-)` is a weak field ligand, no rerrangement of electrons is possible. Thus, the hybridization is `sp^(3)` and the complex ion `[NiC1_(4)]^(2-)` is paramagnetic due to two unpaired electrons. (4) `Cu(3d^(10) 4s^(1)) rarr Cu^(2+) (3d^(9))` . Since `NH_(3)` is an intermediate field ligand and `Cu^(2+)` ion has relatively higher charge density possible. In this process, one electron is shifted form 3d to 4p subshell so as to provide one 3d orbital for `dsp^(2)` hybridization. Thus, the complex has square planer geometry and is paramagnetic due to one unpaired electron. |
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| 404. |
Which of the following is not an inner orbital complex ?A. `[Mn(CN)_(6)]^(3+)`B. `[Fe(CN)_(6)]^(3-)`C. `[Co(H_(2)O)_(6)]^(2+)`D. `[Co(C_(2)O_(4))_(3)]^(3-)` |
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Answer» Correct Answer - C In the formation of an inner orbital complex, the inner d orbital (3d) is used in hybridization. `[Mn(CN)_(6)]^(3-)[Fe(CN)_(6)]^(3-)` and `[Co(C_(2)O_(4))_(3)]^(3-)` are inner orbital complexes involving `d^(2) sp^(3)` hybrization. The first two complexes are paramagnetic corresponding to one unpaired electron while the third one is diamagnetic. Such complexes are unsually formed with strong field ligands `[Co(H_(2)O)_(6)]^(2+)` is an outer orbital complex involving `sp^(3) d^(2)` hybridization. Note that `H_(2)O` is a weak field ligand. |
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| 405. |
Which of the following is not an outer orbital complex ?A. `[MnCI_(6)]^(3-)`B. `[Fe(CN)_(6)]`C. `[FeF_(6)]^(3-)`D. `[CoF_(6)]^(3-)` |
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Answer» Correct Answer - B In the formation of an outer orbital complex, the outer d orbital (4d) is used in hybridization. `[MnC1_(6)]^(3-)` , `[FeF_(6)]^(3-)` and `[CoF_(6)]^(3-)` are outer orbital complexes involving `sp^(3)d^(2)` hybridization and are paramagnetic corresponding to four, five and four unpaired electrons. `[Fe(CN)_(6)]^(3-)` is an inner orbital complex with `d^(2) sp^(3)` hybrization. |
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| 406. |
Of the following complex ions, which is diamagnetic in natures?A. (a) `[CoF_6]^(3-)`B. (b) `[NiCl_4]^(2-)`C. (c) `[Ni(CN)_4]^(2-)`D. (d) `[CuCl_4]^(2-)` |
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Answer» Correct Answer - C `Ni^(2+)` has two unpaired `(3d^(8))` electrons. `CN^(-)` is strong field ligand and thus all the eight electrons are paired giving `dsp^2`-hybridization. `{:(,,,Hybri d,No . of),(,,,isation,unpaired),(,,,,el ectrons),((a),[Co]^(+3),[Ar]^(18)3d^6,sp^3d^2,4),((b),[Ni]^(+2),[Ar]^(18)3d^(8),sp^3,2),((c),[Ni]^(+2),[Ar]^(18)3d^(8),dsp^2,0as CN^(-)has),(,,,, caused fo rced pairi ng),((d),[Cu]^(+2),[Ar]^(18)3d^9,sp^3,1):}` |
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| 407. |
Which complex of the following pairs has the larger value of `Delta_(0)` (i) `[Co(CN)_(6)]^(3-)` and `[Co(NH_(3))_(6)]^(3+)` (ii) `[Co(NH_(3))_(6)]^(3+)` and `[CoF_(6)]^(3-)` (iii) `[Co(H_(2)O)_(6)]^(2+)` and `[Co(H_(2)O)_(6)]^(3+)` . |
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Answer» `[Co(CN)_(6)]^(3-)` has larger value of `Delta_(0)` than `[Co(NH_(3))_(6)]^(3+)` since `CN^(Θ)` has greater field strength than `NH_(3)` (ii) `NH_(3)` has greater field strength than `F^(Θ)` ion hence `Delta_(0)` will be greater for `[Co(NH_(3))_(6)]^(3+)` (iii) Charge on Co in `[Co(H_(2)O)_(6)]^(2+)` is + 2 whereas charge on Co in `[Co(H_(2)O)_(6)]^(3+)` is + 3 Since charge on `Co(NH_(3))_(6)]^(3+)` is higher than `[Co(NH_(3))_(6)]^(2+) ,Delta_(0)` for `[Co(NH_3)_(6)]^(3+)` is larger than `[CoNH_(3)_(6)]^(2+)` . |
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| 408. |
Which of the following will exhibit maximum ionic conductivity?A. (a) `[Co(NH_3)_6]Cl_3`B. (b) `[Cu(NH_3)_4]Cl_2`C. (c) `[Ni(CO)_4]`D. (d) `K_4[Fe(CN)_6]` |
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Answer» Correct Answer - D `K_4[Fe(CN)_6](aq)hArr4K+ (aq)+[Fe(CN)^(4-)(aq)]` It gives ions in solution. `[Co(NH_(3))_6]Cl_3 (aq)hArr [Co(NH_(3))_(6)](aq)+3Cl^(-)(aq)` It gives four ions in solution. `[Cu(NH_3)_4]Cl_(2) (aq) hArr [Cu(NH_(3))_(4)]^(2+) (aq) + 2Cl^(-) (aq)` It gives three ions in solution. |
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| 409. |
Which of the following is/are correctly matched ?A. `[Ni(CO)_(4)]-dsp^(2)` and diamagneticB. `[Ni(en)_(3)](NO_(2))_(2)-sp^(3)d^(2)` and two unpaired electrons.C. `[V(NH_(3))_(6)]Cl_(3)-sp^(3)d^(2)` and two unpaired electrons.D. `[Mn(NO^(+))_(3)(CO)]-sp^(3)` and diamagnetic. |
| Answer» Correct Answer - B::D | |
| 410. |
Which complex of the following pairs has the larger value of `Delta_(0)` (i) `[Co(CN)_(6)]^(3-)` and `[Co(NH_(3))_(6)]^(3+)` (ii) `[Co(NH_(3))_(6)]^(3+)` and `[CoF_(6)]^(3-)` (iii) `[Co(H_(2)O)_(6)]^(2+)` and `[Co(H_(2)O)_(6)]^(3+)` .A. `[Co(CN)_(6)]^(3-) gt [Co(H_(2)O)_(6)]^(3+)`B. `[Co(H_(2)O)_(6)]^(2+) lt [Co(H_(2)O)_(6)]^(3+)`C. `[Co(H_(2)O)_(6)]^(3+) gt [Rh(H_(2)O)_(6)]^(3+)`D. `[Co(NH_(3))_(6)]^(3+) lt [CoF_(6)]^(3-)` |
| Answer» Correct Answer - A::B | |
| 411. |
The correct combination is :A. `[NiCl_(4)]^(2-)`-square - planar, `[Ni(CN)_(4)]^(2-)`-paramagneticB. `[Ni(CN)_(4)]^(2-)`-tetrahedral, `[Ni(CO)_(4)]`- paramagneticC. `[NiCl_(4)]^(2-)`- paramagnetic, `[Ni(CO)_(4)]`- tetrahedralD. `[NiCl_(4)]^(2-)`-diamagnetic , `[Ni(CO)_(4)]`-square-planar |
| Answer» Correct Answer - C | |
| 412. |
`[Co_(2)(CO)_(8)]` displays :A. one Co-Co bond , four teminal CO and four bridging COB. one Co-Co bond , six teminal CO and four bridging COC. no Co-Co bond , four teminal CO and four bridging COD. on Co-Co bond , six teminal CO and four bridging CO |
| Answer» Correct Answer - B | |
| 413. |
Which one of the following complexes will consume more equivalent of aqueous solution of `Ag(NO_(3))` ?A. `Na_(3)[CrCl_(6)]`B. `[Cr(H_(2)O)_(5)Cl]Cl_(2)`C. `[Cr(H_(2)O)_(6)]Cl_(3)`D. `Na_(2)[CrCl_(5)(H_(2)O)]` |
| Answer» Correct Answer - C | |
| 414. |
`sp^(3)d^(2)` hybridization is not displayed by :A. `PF_(5)`B. `SF_(6)`C. `[CrF_(6)]^(3-)`D. `BrF_(5)` |
| Answer» Correct Answer - A | |
| 415. |
Which of the following is an example of homoleptic complex ?A. `[Co(NH_(3))_(4)Cl_(2)]`B. `[Co(NH_(3))_(6)]Cl_(3)`C. `[Co(NH_(3))_(5)Cl]Cl_(2)`D. `[Pt(NH_(3))_(2)Cl_(2)]` |
| Answer» Correct Answer - B | |
| 416. |
Which of the following complexes are homoleptic ?A. `[Co(NH_(3))_(6)]^(3+)`B. `[Co(NH_(3))_(4)Cl_(2)]^(+)`C. `[Ni(CN)_(4)]^(2-)`D. `[Ni(NH_(3))_(4) Cl_(2)]` |
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Answer» Correct Answer - A::C Homopleptic complex The complex containing only one species or group as ligand is known as homoleptic ligand. e.g., `[Co(NH_(3))_(6)]^(3+), [Ni(CN)_(4)]^(2-)` Here, `[Co(NH_(3))_(6)]^(3+)` contain only `NH_(3)` as a ligand and `[Ni(CN)_(4)]^(2-)` contain `CN` as a ligand. While other two complexes `[Co(NH_(3))_(4) Cl_(2)]^(+)` and `[Ni(NH_(3))_(4)Cl_(2)]` contain `NH_(3)` and `Cl` as ligands. Hence, options (a) and (c) are correct choices. |
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| 417. |
Increasing order of `Delta_0` of the following complex isA. `Cr(NH_3)_6^(3+)ltCr(H_2O)_6^(3+)ltCr(NO_2)_6^(3-)`B. (b) `Cr(H_(2)O)_6^(3+)gtCr(NH_3)_6^(3+)gtCr(NO_2)_6^(3-)`C. (c) `Cr(H_(2)O)_6^(3+)ltCr(NH_3)_6^(3+)ltCr(NO_2)_6^(3-)`D. (d) `Cr(NH_3)_6^(3+)ltCr(NO_2)_6^(3-)ltCr(H_(2)O)_6^(3+)` |
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Answer» Correct Answer - C For the same cation, stronger the ligand, higher the `Delta_0Cr(H_2O)_6^(+3)ltCr(NH_3)_6^(+3)ltCr(NO_2)_6^(-3)` |
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| 418. |
The colour of the coordination compounds depends on the crystal field splitting. What will be the correct order of absorption of wavelength of light of the visible region, for the complexes, `[Co(NH_(3)_(6)]^(3+). [Co(CN)_(6)]^(3+). [Co(H_(2)O)_(6)]^(3+)`A. `[Co(CN)_(6)]^(3-) gt [Co(NH_(3))_(6)]^(3+)gt [Co(CN)_(6)]^(3+)`B. `[Co(NH_(3))_(6)]^(3+)gt [Co(H_(2)O)_(6)]^(3+)gt [Co(CN)_(6)]^(3-)`C. `[Co(H_(2)O)_(6)]^(3+) gt [Co(NH_(3))_(6)]^(3+)gt [Co(CN)_(6)]^(3-)`D. `[Co(CN)_(6)]^(3-)gt [Co(NH_(3))_(6)]^(3+)gt[Co(H_(2)O)_(6)]^(3+)` |
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Answer» Correct Answer - C The CFSE of the ligands are in the order ` H_(2) Olt NH_(3)lt CN^(-)` Therefore , wavelength will be in the opposite order as `[Co(H_(2)O)_(6)]^(3+) gt [Co(NH_(3))_(6) ]^(3+) gt [Co (CN)_(6)]^(3-)` |
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| 419. |
The colour of the coordination compounds depends on the crystal field splitting. What will be the correct order of absorption of wavelength of light of the visible region, for the complexes, `[Co(NH_(3)_(6)]^(3+). [Co(CN)_(6)]^(3+). [Co(H_(2)O)_(6)]^(3+)`A. `[Co(CN)_(6)]^(3-) gt [Co(NH_(3))_(6)]^(3+) gt [Co(H_(2)O)_(6)]^(3+)`B. `[Co(NH_(3))_(6)]^(3+) gt [Co(H_(2)O)_(6)]^(3+) gt [Co(CN)_(6)]^(3-)`C. `[Co(H_(2)O)_(6)]^(3+) gt [Co(NH_(3))_(6)]^(3+) gt [Co(CN)_(6)]^(3-)`D. `[Co(NH_(3))_(6)]^(3+) gt [Co(CN)_(6)]^(3-) gt [Co(H_(2)O)_(6)]^(3+)` |
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Answer» The CFSE of the ligands is in the order : `H_(2)O lt NH_(3) lt CN^(-)` Hence , excitation energies are in the order . `[Co(H_(2)O)_(6)]^(3+) lt [Co(NH_(3))_(6)]^(3+) lt [Co(CN)_(6)]^(3-)` From the relation ` E = (hv)/(lambda) implies E prop (1)/(lambda)` The order of absorption of wavelength of light in the visible region is : `[Co(H_(2)O)_(6)]^(3+) gt [Co(NH_(3))_(6)]^(3+) gt [Co(CN)_(6)]^(3-)` |
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| 420. |
Discuss briefly giving an example in each case the role of coordinationcompounds in:(i) biological systems (iii) analytical chemistry(ii) medicinal chemistry and (iv) extraction/metallurgy of metals |
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Answer» Application of coordination compounds (a) Used in qualitative and quantitative analyses (b) Determination of hardness of water (c) Extraction of Au and Ag complex formation (d)Refining of Ni through complex formation (e) Use of Rhodium complex in hydrogenation of alkene (f) Use of EDTA in lead poisoning etc. |
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| 421. |
`t_(2g)` orbitals in octahedral complexes areA. `d_(xy),d_(yz),d_(xz)`B. `d_(xy),d_(x^(2)-y^(2)),d_(z^(2))`C. `d_(x^(2)-y^(2)),d_(z^(2))`D. `d_(xy),d_(x^(2)-y^(2))` |
| Answer» Correct Answer - A | |
| 422. |
Haemoglobin is a complex of_______ chlorophyll is a complex of_______ and vitamin `B_(12)` is a complex of_________ . |
| Answer» Correct Answer - `Fe^(2+) ,Mg^(2+),Co^(2+)` | |
| 423. |
Using `IUPAC` norms write the fomulas for the following (i). Tetrahydroxozincate(II). (ii). Potassium tetrachloridopalladate(II). (iii). Diamminedlchloridoplatinum(II). (iv). Potassium tetracyanidonickelate(II). (v). Pentaamminenitrito-O-Cobalt(III). (vi). Hexaamminecobalt(III) sulphate (vii). Potassium tri(oxalato)chromate(III). (viii). Hexaammlneplatinum(IV) (ix). Tetrabromidocuprate(II). (x). Pentaamminenitrito-N-cobalt(IlI). |
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Answer» (i)`[Zn(OH)_(4)]^(2-)` (ii) `K_(2)[PdCl_(4)]` (iii) `[Pt(NH_(3))_(2)Cl_(2)]` (iv) `K_(2)[Ni(CN)_(4)]` (v) `[Co(NH_(3))_(5)(ONO)]^(2+)` (vi) `[Co(NH_(3))_(6)]^(2)(SO_(4))_(3)` (vii) `K_(3)[Cr(C_(2)O_(4))_(3)]` (viii) `[Pt(NH_(3))_(6)]4+` (ix)`[CuBr_(4)]^(2-)` (x) `[Co(NH_(3))_(5)(NO_(2))]^(2+)` |
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| 424. |
The question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses: Assertion: In the coordination complex `[Pt(NH_3)_4Cl_2]Br_2`, a yellow precipitate of `AgBr` is obtained on treating it with `AgNO_3(aq)`. Reason: Bromide ions are present as counter ions in the ionization sphere.A. (a) If both assertion and reason are true and the reason is the correct explanation of the assertion.B. (b) If both assertion and reason are true but reason is not the correct explanation of the assertion.C. (c) If assertion is true but reason is false.D. (d) If assertion is false but reason is true. |
| Answer» Correct Answer - A | |
| 425. |
(a) `[Ti(H_(2)O)_(6)]^(3+)` absorbs light of wavelength 5000Å. Name one ligand which would form a titanium (III) complex absorbing light to lower wavelength than 5000Å and one ligand which would form a complex absorbing light of wavelength higher than 5000 Å. (b) Calculate the magnetic moments (spin only ) of the following complexes `(i)[PtCl_(6)]^(2-) " " (ii) [Cr(CO)_(6)] " " (iii) [Ir(NH_(3))_(6)]^(3+)" " (iv) [Pd(en)_(2)]^(2+)` |
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Answer» Correct Answer - (a) `CN^(-),F^(-)` (b) (i) 0 (ii)0 (iii)0 (iv)0(a) C N − , F − CN-,F- (b) (i) 0 (ii)0 (iii)0 (iv)0 |
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| 426. |
An aqueous solution of titanium bromide shows zero magnetic moment. Assuming the complex as octahedral in aqueous solution, the formula of the complex is .A. `[Ti(H_(2)O)_(6)]Cl_(2)`B. `[Ti(H_(2)O)_(6)]Cl_(4)`C. `[TiCl_(3)(H_(2)O)_(3)]`D. `[TiCl_(2)(H_(2)O)_(4)]` |
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Answer» Correct Answer - 2 `[Ti(H_(2)O)_(5)]Cl_(4)` Coordination number 6 `{:(implies,"octahedral complex"),(implies,"no unparied electrons"),(implies,"magnetic moment"=0" "B.M.):}` |
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| 427. |
The question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses: Assertion: Charge on the complex of ferric ion with EDTA is minus one. Reason: EDTA is a hexadentate ligand.A. (a) If both assertion and reason are true and the reason is the correct explanation of the assertion.B. (b) If both assertion and reason are true but reason is not the correct explanation of the assertion.C. (c) If assertion is true but reason is false.D. (d) If assertion is false but reason is true. |
| Answer» Correct Answer - B | |
| 428. |
The question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses: Assertion: The complex `[Cr(SCN)(NH_3)_5]Cl_2` is linkage isomeric with `[Cr(NCS)(NH_3)_5]Cl_2`. Reason: `SCN^(-)` is an ambident ligand in which there are two possible coordination sites.A. (a) If both assertion and reason are true and the reason is the correct explanation of the assertion.B. (b) If both assertion and reason are true but reason is not the correct explanation of the assertion.C. (c) If assertion is true but reason is false.D. (d) If assertion is false but reason is true. |
| Answer» Correct Answer - A | |
| 429. |
The coordination number of Pt in `[Pt(NH_3)_4Cl_2]` ion isA. (a) `2`B. (b) `4`C. (c) `6`D. (d) `8` |
| Answer» Correct Answer - C | |
| 430. |
In which of the following complexes oxidation state of metal is zeroA. (a) `[Pt(NH_3)_2Cl_2]`B. (b) `[Cr(CO)_6]`C. (c) `[Cr(NH_3)_3Cl_3]`D. (d) `[Cr(en)_2Cl_2]` |
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Answer» Correct Answer - B The oxidation state of metal in metal carbonyl is zero. |
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| 431. |
The question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses: Assertion: Co-ordination number of cobalt in the complex `[Co(en)_3]^(3+)` is six. Reason: Ethylenediamine acts as a bidentate ligand.A. (a) If both assertion and reason are true and the reason is the correct explanation of the assertion.B. (b) If both assertion and reason are true but reason is not the correct explanation of the assertion.C. (c) If assertion is true but reason is false.D. (d) If assertion is false but reason is true. |
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Answer» Correct Answer - A In `H_2overset(uarr)overset(..)N-H_2C-CH_2-overset(uarr)overset(..)NH_2` two ammine nitrogen atoms act as donor atoms. So, it acts as a bidentate ligand. Hence, there are six `sigma`-bonds between metal and ligands, thereby given coordination number six. |
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| 432. |
`[Pt(NH_3)_4Cl_2]Br_2` and `[Pt(NH_3)_4Br_2]Cl_2` are related to each other asA. (a) optical isomersB. (b) coordinate isomersC. (c) ionization isomersD. (d) linkage isomers |
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Answer» Correct Answer - C Ionisation isomers as they furnish different ions in solution. |
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| 433. |
The oxidation number of `Cr` in `[Cr(NH_3)_6]Cl_3` isA. (a) `8`B. (b) `6`C. (c) `4`D. (d) `3` |
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Answer» Correct Answer - D `x+6xx(0)+3xx(-1)=0` `x-3=0`, `x=+3`. Oxidation number of `Cr` is `=+3` |
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| 434. |
Which of the following statements is correct ?A. `[Ni(CN)_(4)]^(2-)` complex is more stable than `[Ni(dmg)_(2)]` due to higher `CFSE` value .B. With `d^(2)sp^(3)` hybridisation `[FeCl(CN)_(4)(O_(2))]^(4-)` complex is diamagnetic .C. `[VO(CO)_(6)]` is not very stable and easily reduces to `[VO(CO)_(6)]^(Θ)` .D. Liagands such as `CO,CN^(Θ),NO^(o+)` are pi electron donor due to the presence of filled pi-molecular orbital . |
| Answer» Correct Answer - C | |
| 435. |
An aqueous solution of titanium bromide shows zero magnetic moment. Assuming the complex as octahedral in aqueous solution the formula of the complex is .A. `[TiBr_(6)]^(3-)`B. `[Ti(H_(2)O)_(6)Br_(4)`C. `[TiBr_(6)]^(2-)`D. `Ti(H_(2)O)_(4)Br_(2)]` |
| Answer» Correct Answer - B | |
| 436. |
The IUPAC name of `[Co(NH_(3))_6]Cl_3` isA. (a) hexammine cobalt (III) chlorideB. (b) hexammine cobalt (II) chlorideC. (c) triammine cobalt (III) trichlorideD. (d) None of these |
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Answer» Correct Answer - A hexammine cobalt (III) chloride |
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| 437. |
IUPAC name for `K[Ag(CN)_2]` isA. (a) potassium argentocyanideB. (b) potassium silver cyanideC. (c) potassium dicyanidoargentate (I)D. (d) potassium dicyanidosilver (II) |
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Answer» Correct Answer - C potassium dicyanidoargentate (I) |
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| 438. |
Which of the folowing statement (s) is//are incorrect?A. Metal carbonyls are the examples of only o-boned organometallic complexesB. Metal carbonyls are the examples of only o-boned organometallic complexesC. Metal carbonyls are the examples of only o-boned organometallic complexes which involve both o and pi-bonds between metal and carbon of the carbonyl group .D. Metal carbonyls involve both o and `pi` bonds between metal and oxygen of the carbonyl group . |
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Answer» Correct Answer - A::B::D The o and `pi` bondings are through `C` to `CO` . |
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| 439. |
Antitumor reagent isA. FerroceneB. Zeigler-natta saltC. `[Ag(CN)_(2)]^(-)`D. cis-platin |
| Answer» Correct Answer - D | |
| 440. |
The hardness of water is measured byA. EDTA methodB. Distillation methodC. Conductivity methodD. All of these |
| Answer» Correct Answer - D | |
| 441. |
Geometrical isomerism can be shown byA. `[Ag(NH_(3))(CN)]`B. `Na_(2)[Cd(NO_(2))_(4)]`C. `[PtCl_(4)I_(2)]`D. `[Pt(NH_(3))_(3)Cl][Au(CN)_(4)]` |
| Answer» Correct Answer - C | |
| 442. |
In which of the following compounds, the oxidation number of the started transition metal is zero.A. `[Ni(CO)_(4)]`B. `[Pt(C_(2)H_(4))Cl_(3)`C. `[Co(NH_(3))_(6)]Cl_(2)`D. `[Fe(H_(2)O)_(3)](OH)_(2)` |
| Answer» Correct Answer - A | |
| 443. |
Which reagent can be used to identify `Ni^(2+)` ion ?A. ResorcinolB. Dimethyl glyoximeC. Diphenyl benzidineD. Potassium ferrocyanide |
| Answer» Correct Answer - B | |
| 444. |
Wilkinsion catalyst isA. `NiCl_(4)`B. `(Ph_(3)P_(3)` RhClC. `AlCl_(3)+TiCl_(4)`D. `Fe(CO)_(5)` |
| Answer» Correct Answer - B | |
| 445. |
Which of the following is not organometallic complex ?A. Grignard reagentB. FerroceneC. Trans-platinD. Diethyl zinc |
| Answer» Correct Answer - C | |
| 446. |
Which one is not an organometallic compound ?A. `RMgX`B. `(C_(2)H_(5))_(4)Pb`C. `(CH_(3))_(4)Sn`D. `C_(2)H_(5)ONa` |
| Answer» Correct Answer - D | |
| 447. |
The IUPAC name of `[Cr(NH_3)_6]^(3+)` isA. (a) hexamminechromium (VI) ionB. (b) hexamminechromium (III) ionC. (c) hexamminechromium (II) ionD. (d) hexamminechloride |
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Answer» Correct Answer - B In the given ion `[Cr(NH_3)_6]^(3+)`, the oxidation state of chromium is `+3` and here `6NH_3` ligands are attached to the central metal atom. Therefore its IUPAC name is hexamminechromium (III) ion. |
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| 448. |
`[NiCl_(4)]^(2-)` is paramagnetic and therefore its geometry is :A. pyramidalB. bi-pyramidalC. tetrahedralD. square planar |
| Answer» Correct Answer - C | |
| 449. |
`[NiCI_(4)]^(2-)` is diamagnetic in nature . |
| Answer» Correct Answer - F | |
| 450. |
In `[NiCl_(4)]^(2-)` ,the number of unparied electron isA. B. C. D. |
| Answer» Correct Answer - B | |