Coordination Compounds PYQs Set 5 (PDF)

Set 5 of 18 · Questions 121-150 of 522

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NEET Chemistry · Coordination Compounds · Set 5 (Q121-150)

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121.
What is coordination number of the metal in $(Co (en)_{2} Cl_{2})^{2 +}$ ?
1. (1) $3$
2. (2) $4$
3. (3) $5$
4. (4) $6$
122.
$Match each set of hybrid orbitals from LIST-I with complex(es) given in LIST-II.$
$LIST-I$ $LIST-II$
$(P) d s p^{2}$ $(1) [F e F_{6}]^{4-}$
$(Q) s p^{3}$ $(2) [Ti(H_{2} O)_{3} C l_{3}]$
$(R) s p^{3} d^{2}$ $(3) [Cr(N H_{3})_{6}]^{3 +}$
$(S) d^{2} s p^{3}$ $(4) [F e C l_{4}]^{2-}$
$(5) Ni(CO)_{4}$
$(6) [Ni(CN)_{4}]^{2-}$
$The correct option is$
1. (1) $P \to 5 ; Q \to 4, 6 ; R \to 2, 3 ; S \to 1$
2. (2) $P \to 5, 6 ; Q \to 4 ; R \to 3 ; S \to 1, 2$
3. (3) $P \to 6 ; Q \to 4, 5 ; R \to 1 ; S \to 2, 3$
4. (4) $P \to 4, 6 ; Q \to 5, 6 ; R \to 1, 2 ; S \to 3$
123.
The correct order for wavelengths of absorption in the visible region for the following complexes will be
1. (1) $(Ni (NH_{3})_{6})^{2 +} < (Ni (H_{2} O)_{6})^{2 +} < (Ni (NO_{2})_{6})^{4 -}$
2. (2) $(Ni (NO_{2})_{6})^{4 -} < (Ni (NH_{3})_{6})^{2 +} < (Ni (H_{2} O)_{6})^{2 +}$
3. (3) $(Ni (NH_{3})_{6})^{2 +} < (Ni (NO_{2})_{6})^{4 -} < (Ni (H_{2} O)_{6})^{2 +}$
4. (4) $(Ni (NO_{2})_{6})^{4 -} < (Ni (H_{2} O)_{6})^{2 +} < (Ni (NH_{3})_{6})^{2 +}$
124.
Which of the following will have maximum stabilization due to crystal fild?
1. (1) $[Ti(H_{2} O)_{6}]^{3 +}$
2. (2) $[Co(H_{2} O)_{6}]^{2 +}$
3. (3) $[Co(CN)_{6}]^{3 -}$
4. (4) $[Cu(N H_{3})_{4}]^{2 +}$
125.
As per IUPAC nomenclature, the name of the complex [Co $(H_{2} O)_{4} (N H_{3})_{2}$ ] $C l_{3}$ is :
1. (1) $Tetraaquadiaminecobalt (III) chloride$
2. (2) $Tetraaquadiamminecobalt (III) chloride$
3. (3) $Diaminetetraaquacobalt (III) chloride$
4. (4) $Diamminetetraaquacobalt (III) chloride$
126.
Pick out the correct statement with respect to [Mn(CN) $_{6}$ ] $^{3-}$ :
1. (1) $It is s p^{3} d^{2} hybridised and octahedral$
2. (2) $It is s p^{3} d^{2} hybridised an tetrahedral$
3. (3) $It is d^{2} s p^{3} hybridised and octahedral$
4. (4) $It is d s p^{2} hybridised and square planar.$
127.
The d-orbital electronic configuration of the complex among $(Co (en)_{3})^{3 +}, (CoF_{6})^{3 -}$ , $(Mn (H_{2} O)_{6})^{2 +}$ and $(Zn (H_{2} O)_{6})^{2 +}$ that has the highest CFSE is :
1. (1) $t_{2 g}^{6} e_{g}^{0}$
2. (2) $t_{2 g}^{3} e_{g}^{2}$
3. (3) $t_{2 g}^{4} e_{g}^{2}$
4. (4) $t_{2 g}^{6} e_{g}^{4}$
128.
Homoleptic complexes among the following are
I. $K_{3} (Al (C_{2} O_{4})_{3})$
II. $(CoCl_{2} (en)_{2})^{+}$
III. $K_{2} (Zn (OH)_{4})$
1. (1) $I only$
2. (2) $I and II only$
3. (3) $I and III only$
4. (4) $Ill only:$
129.
When $AgNO_{3}$ solution is added in excess to $1 M$ solution of $CoCl_{3} \cdot X NH_{3}$ , one mole of $AgCl$ is formed. What is the value of ' $X$ '?
1. (1) $1$
2. (2) $4$
3. (3) $3$
4. (4) $2$
130.
Crystal field splitting energies for octahedral $(Δ_{0})$ and tetrahedral $(Δ_{t})$ geometries caused by the same ligands are related through the expression
1. (1) $Δ_{0} = Δ_{t}$
2. (2) $4 Δ_{0} = 9 Δ_{t}$
3. (3) $9 Δ_{0} = Δ_{t}$
4. (4) $Δ_{0} = 2 Δ_{t}$
131.
Which of the following can be reduce easily
1. (1) $V (C O)_{6}$
2. (2) $Mo (C O)_{6}$
3. (3) $[C o (C O)_{4}]^{-}$
4. (4) $Fe (C O)_{5}$
132.
Crystal filed stabilization energy for high spin d4 octahedral complex is
1. (1) $-1.8 Δ0$
2. (2) $-1.6 Δ0 + P$
3. (3) $-1.2 Δ0$
4. (4) $-0.6 Δ0$
133.
The correct statement about of the magnetic prperties of [Fe(CN) $_{6}$ ] $^{3-}$ and [ $F e F_{6}$ ] $^{3-}$ is : (Z = 26)
1. (1) $both are paramagnetic$
2. (2) $both are diamagnetic$
3. (3) $[Fe(CN)_{6}]^{3-} is diamagnetic, [F e F_{6}]^{3-} is paramagnetic.$
4. (4) $[Fe(CN)_{6}]^{3-} is paramagnetic, [F e F_{6}]^{3-} is diamagnetic.$
134.
The Crystal Field Stabilization Energy $(CFSE)$ of $[CoF_{3} (H_{2} O)_{3}] (Δ_{0} < P)$ is
1. (1) $- 0.8 Δ_{0}$
2. (2) $- 0.8 Δ_{0} + 2 P$
3. (3) $- 0.4 Δ_{0}$
4. (4) $- 0.4 Δ_{0} + P$
135.
Which of the following will give maximum number of isomers?
1. (1) $[C o (N H_{3})_{4} C l_{2}]$
2. (2) $[N i (e n) (N H_{3})_{4}]^{2 +}$
3. (3) $[N i (C_{2} O_{4}) (e n)_{2}]^{2 -}$
4. (4) $[C r (S C N)_{2} (N H_{3})_{4}]^{+}$
136.
The $d$ electron configurations of $C r^{2 +}, M n^{2 +}, F e^{2 +}$ and $N i^{2 +}$ are $3 d^{4}, 3 d^{5}, 3 d^{6}$ and $3 d^{8}$ respectively Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour?
1. (1) $[F e (H_{2} O)_{6}]^{2 +}$
2. (2) $[N i (H_{2} O)_{6}]^{2 +}$
3. (3) $[C r (H_{2} O)_{6}]^{2 +}$
4. (4) $[M n (H_{2} O)_{6}]^{2 +} .$
137.
Element not present in Nessler's reagent is
1. (1) $N$
2. (2) $Hg$
3. (3) $I$
4. (4) $K$
138.
$(Cr (NH_{3})_{6}) (Cr (SCN)_{6})$ and $(Cr (NH_{3})_{2} (SCN)_{4})$ $(Cr (NH_{3})_{4} (SCN)_{2})$ are the examples of what type of isomerism?
1. (1) $Ionisation isomerism$
2. (2) $Linkage isomerism$
3. (3) $Coordination isomerism$
4. (4) $Solvate isomerism$
139.
Which of the following complex ions has electrons that are symmetrically filled in both $t_{2 g}$ and $e_{g}$ orbitals ?
1. (1) $[F e F_{6}]^{3-}$
2. (2) $[Mn(CN)_{6}]^{4-}$
3. (3) $[C o F_{6}]^{3-}$
4. (4) $[Co(N H_{3})_{6}]^{2 +}$
140.
The atomic number of cobalt is 27 . The EAN of cobalt in $Na_{3} (Co (NO_{2})_{4} Cl_{2})$ is
1. (1) $35$
2. (2) $24$
3. (3) $36$
4. (4) $34$
141.
The difference in the number of unpaired electrons of a metal ion in its high-spin and low-spin octahedral complexes is two. The metal ion is:
1. (1) $Ni^{2 +}$
2. (2) $Fe^{2 +}$
3. (3) $Co^{2 +}$
4. (4) $Mn^{2 +}$
142.
Given below are two statements:
Statement (I): A solution of $(Ni (H_{2} O)_{6})^{2 +}$ is green in colour.
Statement (II): A solution of $(Ni (CN)_{4})^{2 -}$ is colourless.
In the light of the above statements, choose the most appropriate answer from the options given below:
1. (1) $Both Statement I and Statement II are incorrect$
2. (2) $Both Statement I and Statement II are correct$
3. (3) $Statement I is incorrect but Statement II is correct$
4. (4) $Statement I is correct but Statement II is incorrect$
143.
Which complex cannot ionise in solution?
1. (1) $(CoCl_{3} (NH_{3})_{3})$
2. (2) $K_{4} (Fe (CN)_{6})$
3. (3) $K_{2} (Pt (F_{6}))$
4. (4) $(Pt (NH_{3})_{6}) Cl_{4}$
144.
Identify from the following species in which $d^{2} sp^{3}$ hybridization is shown by central atom:
1. (1) $(Co (NH_{3})_{6})^{3 +}$
2. (2) $BrF_{5}$
3. (3) $(Pt (Cl)_{4})^{2 -}$
4. (4) $SF_{6}$
145.
The coordination numbers of $Co$ and $Al$ in $(Co (Cl) (en)_{2}) Cl$ and $K_{3} (Al (C_{2} O_{4})_{3})$ respectively, are: $(en =$ ethane $- 1, 2 -$ diamine $)$
1. (1) $5 and 3$
2. (2) $3 and 3$
3. (3) $6 and 6$
4. (4) $5 and 6$
146.
The crystal field stabilization energy $(CFSE)$ of $(Fe (H_{2} O)_{6}) Cl_{2}$ and $K_{2} (NiCl_{4}) respectively are :$
1. (1) $- 0.6 Δ_{0} and - 0.8 Δ_{t}$
2. (2) $- 0.4 Δ_{0} and - 0.8 Δ_{t}$
3. (3) $- 2.4 Δ_{0} and - 1.2 Δ_{t}$
4. (4) $- 0.4 Δ_{0} and - 1.2 Δ_{t}$
147.
Crystal Field Splitting Energy (CFSE) for $(CoCl_{6})^{4 -}$ is $18000 cm^{- 1}$ . The Crystal Field Splitting Energy (CFSE) for $(CoCl_{4})^{2 -}$ will be
1. (1) $8000 cm^{- 1}$
2. (2) $10, 000 cm^{- 1}$
3. (3) $18000 cm^{- 1}$
4. (4) $16000 cm^{- 1}$
148.
Which from following formulae is of sodium hexanitrocobaltate(III)?
1. (1) $Na_{3} (Co (NO_{2})_{6})$
2. (2) $Na_{2} (Co (NO_{2})_{6})$
3. (3) $(Co (NaNO_{2})_{6})$
4. (4) $Na_{3} (Co (ONO)_{6}) (2023)$
149.
Which of the following complex ions is expected to absorb visible light?.
1. (1) $[T i (e n)_{2} (N H_{3})_{2}]^{4 +}$
2. (2) $[C r (N H_{3})_{6}]^{3 +}$
3. (3) $[Z n (N H_{3})_{6}]^{2 +}$
4. (4) $[S c (H_{2} O)_{3} (N H_{3})_{3}]^{3 +} [At. nos. Z n = 30, S c = 21, T i = 22, C r = 24]$
150.
The correct order for the wavelength of absorption in the visible region is :
1. (1) $[Ni(NO2)6]4- < [Ni(NH3)6]2+ < [Ni(H2O)6]2+$
2. (2) $[Ni(NO2)6]4- < [Ni(H2O)6]2+ < [Ni(NH3)6]2+$
3. (3) $[Ni(H2O)6]2+ < [Ni(NH3)6]2+ < [Ni(NO2)6]4+$
4. (4) $[Ni(NH3)6]2+ < [Ni(H2O)6]2+ < [Ni(NO2)6]4-$