Coordination Compounds PYQs Set 15 (PDF)

Set 15 of 18 · Questions 421-450 of 522

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NEET Chemistry · Coordination Compounds · Set 15 (Q421-450)

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421.
The IUPAC name of $K_{3}$ Fe $(C N)_{6}$ is :
1. (1) $Potassium hexacyanoferrate(II)$
2. (2) $Potassium hexacyanoferrate(III)$
3. (3) $Potassium hexacyanoiron(II)$
4. (4) $Tripotassium hexacyanoiron(II)$
422.
Observe the following complexes
$(Mn (CN)_{6})^{3 -}, (Fe (CN)_{6})^{- 3}, (Co (C_{2} O_{4})_{3})^{3 -}, (MnCl_{6})^{3 -}, (Fe (CN)_{6})^{4 -}, (CoF_{6})^{3 -}$
From the above, the number of inner orbital complexes with paramagnetic nature is
1. (1) $2$
2. (2) $1$
3. (3) $3$
4. (4) $4$
423.
Which of the following will show optical isomerism ?
1. (1) $[Cu(N H_{3})_{4}]^{2 +}$
2. (2) $[Z n C l_{4}]^{2-}$
3. (3) $[Cr(C_{2} O_{4})_{3}]^{3-}$
4. (4) $[Co(CN)_{6}]^{3-}$
424.
The correct order of ligands arranged in increasing field strength.
1. (1) $F^{-} < Br^{-} < I^{-} < NH_{3}$
2. (2) $Br^{-} < F^{-} < H_{2} O < NH_{3}$
3. (3) $H_{2} O < - OH < CN^{-} < NH_{3}$
4. (4) $Cl^{-} < - OH < Br^{-} < CN^{-}$
425.
According to valence bond theory the metal atom or ion can make use of which of the following orbitals to yield hybrid orbitals, that can form bonds with ligands.
1. (1) $(n - 1) d, (n - 1) s, np$
2. (2) $(n - 1) d, ns, np$
3. (3) $(n - 1) d, ns, (n-1)p$
4. (4) $nd, (n-1)s, (n - 1) p$
426.
The correct combination is :
1. (1) $[N i C l_{4}]^{2-} - square-planar; [Ni(CN)_{4}]^{2-} - paramagnetic$
2. (2) $[Ni(CN)_{4}]^{2-} - tetrahedral; [Ni(CO)_{4}] - paramagnetic$
3. (3) $[N i C l_{4}]^{2-} - paramagnetic; [Ni (C O)_{4}] - tetrahedral$
4. (4) $[N i C l_{4}]^{2-} - diamagnetic; [Ni (C O)_{4}] - square-planar$
427.
$s p^{3} d^{2}$ hybridization is not displayed by :
1. (1) $P F_{5}$
2. (2) $S F_{6}$
3. (3) $[C r F_{6}]^{3-}$
4. (4) $B r F_{5}$
428.
Which of the following statements are incorrect?(A) Co+3 with strong field ligand forms high magnetic moment complex.(B) For Co+3 if pairing energy $(P) > Δ_{0}$ then the complex formed will have $t_{2 g}^{4}, e_{g}^{2}$ configuration(C) For $[Co (en)_{3}]^{3 +} λ_{absorbed}$ is less thenλabsorbed for $[CoF_{6}]^{3 -}$ (D) If $Δ_{0} = 18000 cm^{- 1}$ for Co+3 then with same ligands for it $Δ_{t} = 16000 cm^{- 1}$
1. (1) $A, D$
2. (2) $B, C$
3. (3) $A, B$
4. (4) $A$
429.
Number of complexes from the following with even number of unpaired " $d$ " electrons is
$(V (H_{2} O)_{6})^{3 +}, (Cr (H_{2} O)_{6})^{2 +}, (Fe (H_{2} O)_{6})^{3 +}, (Ni (H_{2} O)_{6})^{3 +}, (Cu (H_{2} O)_{6})^{2 +}$
[Given atomic numbers : $V = 23, Cr = 24, Fe = 26, Ni = 28 Cu = 29$ ]
1. (1) $2$
2. (2) $1$
3. (3) $4$
4. (4) $5$
430.
Simplified absorption spectra of three complexes $((i)$ , $(ii)$ and $(iii))$ of $Mn^{n +}$ ion are provided below; their $λ_{max}$ values are marked as $A$ , $B$ and $C$ respectively. The correct match between the complexes and their $λ_{max}$ values is

(i) $[M (NCS)_{6}]^{(- 6 + n)}$ (ii) $[MF_{6}]^{(- 6 + n)}$
(iii) $[M (NH_{3})_{6}]^{n +}$
1. (1) $A - (i), B - (ii), C - (iii)$
2. (2) $A - (ii), B - (iii), C - (i)$
3. (3) $A - (ii), B - (i), C - (iii)$
4. (4) $A - (iii), B - (i), C - (ii)$
431.
For the square planar complex [M abcd] (where, M =central metal ; a, b, c and d are monodentate ligands) the number of possible geometrical isomers are
1. (1) $1$
2. (2) $2$
3. (3) $3$
4. (4) $4$
432.
Which statement is not true with respect to nitrate ion test ?
1. (1) $A dark brown ring is formed at the junction of two solutions.$
2. (2) $Ring is formed due to nitroferrous sulphate complex.$
3. (3) $The brown complex is [Fe (H_{2} O)_{5} (NO)] S O_{4} .$
4. (4) $Heating the nitrate salt with cone. H_{2} S 0_{4}, light brown fumes are evolved.$
433.
The order of energy absorbed which is responsible for the color of complexes
A. $(Ni (H_{2} O)_{2} (en)_{2})^{2 +}$
B. $(Ni (H_{2} O)_{4} (en))^{2 +}$ and
C. $(Ni (en)_{3})^{2 +}$ is
1. (1) $B > A > C$
2. (2) $A > B > C$
3. (3) $C > B > A$
4. (4) $C > A > B$
434.
The crystal field stabilisation energy $($ CFSE) for $[C o C l_{6}]^{4 -}$ is 18000 $c m^{- 1}$ The CFSE for $[C o C l_{4}]^{2 -}$ will be
1. (1) $6000 c m^{- 1}$
2. (2) $16000 c m^{- 1}$
3. (3) $18000 c m^{- 1}$
4. (4) $8000 c m^{- 1}$
435.
The hybridization and magnetic behaviour of cobalt ion in $(Co (NH_{3})_{6})^{3 +}$ complex, respectively is
1. (1) $s p^{3} d^{2} and diamagnetic$
2. (2) $d^{2} s p^{3} and paramagnetic$
3. (3) $d^{2} s p^{3} and diamagnetic$
4. (4) $s p^{3} d^{2} and paramagnetic$
436.
Match List I with List II
$List - I A. K_{2} (Ni (CN)_{4}) B. (Ni (CO)_{4}) C. (Co (NH_{3})_{6}) Cl_{3} D. Na_{3} (CoF_{6}) List - II I. sp^{3} II. sp^{3} d^{2} III. dsp^{2} IV. d^{2} sp^{3}$
Choose the correct answer from the options given below:
1. (1) $A-III, B-I, C-IV, D-II1$
2. (2) $A-III, B-I, C-II, D-IV$
3. (3) $A-I, B-III, C-II, D-IV$
4. (4) $A-III, B-II, C-IV, D-I$
437.
$Match the LIST-I with LIST-II (Complex/ Species) (Shape & magnetic moment)$
$LIST-I$ $LIST-II$
$A. (Ni (CO)_{4})$ $I. Tetrahedral, 2.8 BM$
$B. (Ni (CN)_{4})^{2 -}$ $II. Square planar, 0 BM$
$C. (NiCl_{4})^{2 -}$ $III. Tetrahedral, 0 BM$
$D. (MnBr_{4})^{2 -}$ $IV. Tetrahedral, 5.9 BM$
$Choose the correct answer from the options given below:$
1. (1) $A-I, B-II, C-III, D-IV$
2. (2) $A-IV, B-I, C-III, D-II$
3. (3) $A-III, B-II, C-I, D-IV$
4. (4) $A-III, B-IV, C-II, D-I$
438.
Which of the following complexes is used to be as an anticancer agent ?
1. (1) $mer-[Co(NH3)3Cl]$
2. (2) $Cis - [Pt Cl2(NH3)2]$
3. (3) $cis - K2[Pt Cl2Br2]$
4. (4) $Na2CoCl4$
439.
Match List – I with List - II
List – I List - II(Complex) (Hybridisation & Magnetic characters)
(A) $(MnBr_{4})^{2 -}$ (I) $d^{2} s^{3} &$ diamagnetic(B) $(FeF_{6})^{3 -}$ (II) $sp^{3} d^{2} &$ paramagnetic(C) $(Co (C_{2} O_{4})_{3})^{3 -}$ (III) sp3& diamagnetic(D) $(Ni (CO)_{4})$ (IV) sp3& paramagneticChoose the correct answer from the options given below :
1. (1) $(A) -(IV), (B) - (II), (C) - (I), (D) - (III)$
2. (2) $(A) - (III), (B) - (I), (C) - (II), (D) - (IV)$
3. (3) $(A) -(IV), (B) - (I), (C) - (II), (D) - (III)$
4. (4) $(A) - (III), (B) - (II), (C) - (I), (D) - (IV)$
440.
An example of a sigma bonded organometallic compound is
1. (1) $Ruthenocene$
2. (2) $Grignard's reagent$
3. (3) $Ferrocene$
4. (4) $Cobaltocene$
441.
Which is diamagnetic?
1. (1) $[C o (F)_{6}]^{3 -}$
2. (2) $[N i (C N)_{4}]^{2 -}$
3. (3) $[N i C 1_{4}]^{2 -}$
4. (4) $[F e (C N)_{6}]^{3 -}$
442.
The following ligand is:
1. (1) $hexadentate$
2. (2) $tetradentate$
3. (3) $bidentate$
4. (4) $tridentate$
443.
The number of possible optical isomers for the complexes $M A_{2} B_{2}$ with $s p^{3}$ and $d s p^{2}$ hybridized metal atom, respectively, is :
1. (1) $0 and 0$
2. (2) $2 and 2$
3. (3) $0 and 2$
4. (4) $0 and 1$
444.
Match List - I with List - II.
$List - I (Complex) (A) (CoF_{6})^{3 -} (B) (NiCl_{4})^{2 -} (C) (Co (NH_{3})_{6})^{3 +} (D) (Ni (CN)_{4})^{2 -} List - II (Hybridisation of central metal ion) (I) d^{2} sp^{3} (II) sp^{3} (III) sp^{3} d^{2} (IV) dsp^{2}$
Choose the correct answer from the options given below :
1. (1) $(A)-(I), (B)-(IV), (C)-(III), (D)-(II)$
2. (2) $(A)-(I), (B)-(II), (C)-(III), (D)-(IV)$
3. (3) $(A)-(III), (B)-(IV), (C)-(I), (D)-(II)$
4. (4) $(A)-(III), (B)-(II), (C)-(I), (D)-(IV)$
445.
The total number of possible isomers for square-planar $[P t (C l) (N O_{2}) (N O_{3}) (S C N)]^{2-}$ is :
1. (1) $8$
2. (2) $12$
3. (3) $16$
4. (4) $24$
446.
A reaction of cobalt(III) chloride and ethylenediamine in a 1 : 2 mole ratio generates two isomeric products A (violet coloured) and B(green coloured). A can show optical activity, but, B is optically inactive. What type of isomers does A and B represent?
1. (1) $Ionisation isomers$
2. (2) $Linkage isomer$
3. (3) $Coordination isomers$
4. (4) $Geometrical isomers$
447.
The denticity of an organic ligand, biuret is :
1. (1) $2$
2. (2) $4$
3. (3) $3$
4. (4) $6$
448.
The anion of acetylacetone (acac) forms $C o (a c a c)$ chelate with $C o^{3 +}$ . The rings of the chelate are
1. (1) $five membered$
2. (2) $four membered$
3. (3) $six membered$
4. (4) $three membered$
449.
The complex that can show fac– and mer– isomers is :
1. (1) $[C o C l_{2} (e n)_{2}]$
2. (2) $[Pt(N H_{3})_{2} C l_{2}]$
3. (3) $[C o (N H_{3})_{4} C l_{2}]^{+}$
4. (4) $[Co (N H_{3})_{3} (N O_{2})_{3}]$
450.
The d-electron configurations of Cr2+, Mn2+, Fe2+ and Co2+ are d4, d5, d6 and d7 respectively. Which one of the following will exhibit minimum paramagnetic behaviour ? (Atomic no. $Cr = 24, Mn = 25, Fe = 26, Co = 27$ ).
1. (1) $[Mn(H2O)6]2+$
2. (2) $[Fe(H2O)6]2+$
3. (3) $[Co(H2O)6]2+$
4. (4) $[Cr(H2O)6]2+$