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Transition Metals and Their Complexes

Comprehensive quiz covering transition metals, their properties, complexes, crystal field theory, ores, and catalysts for GATE/NET/SLET chemistry examinations.

14 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following statements is/are not correct?

  1. Mn metal is used as a scavenger in making steel.
  2. All known isotopes of Tc are radioactive, except Tc98.
  3. Re is used in the making of electric furnace windings and spectrophotometer filaments.
  1. Only 1
  2. Only 2
  3. Only 3
  4. 1 and 2
  5. 2 and 3
Question 2 Multiple Choice (Single Answer)

Which of the following d-electronic configurations will give maximum CFSE in an octahedral complex?

  1. Low spin-d4
  2. High spin-d4
  3. Low spin-d5
  4. High spin-d5
  5. High spin-d7
Question 3 Multiple Choice (Single Answer)

The clusters of H3Ru3NiCp(CO)9 are used to catalyse

  1. azane synthesis
  2. flue gas
  3. carbonic oxide methanation
  4. Hydrodesulfurization
  5. butyl hydride hydrogenolysis
Question 4 Multiple Choice (Single Answer)

Which of the following is/are the ore(s) of titanium?

  1. Ilmenite
  2. Hausmannite
  3. Linnaeite
  1. Only 1
  2. Only 2
  3. Only 3
  4. 1 and 2
  5. 2 and 3
Question 5 Multiple Choice (Single Answer)

Transitional elements are named transition elements because their characters are

  1. in between s- and p-block elements
  2. like that of p- and d-block elements
  3. members of I – A group
  4. like inactive elements
  5. like active elements
Question 6 Multiple Choice (Single Answer)

Which of the following statements is/are incorrect?

  1. CuCl2 is used as a catalyst in the manufacture of ammonia by Haber process.
  2. CuCl exhibits blue colour in an aqueous solution.
  3. Fractional crystallisation of metals to get the purest form is known as zone-refining.
  1. Only 1
  2. Only 2
  3. Only 3
  4. 1 and 2
  5. 2 and 3
Question 7 Multiple Choice (Single Answer)

Which of the following statements is/are incorrect?

  1. In floatation process, ZnO and SO3 are formed from sulphide ores.
  2. Fe is used as coating material to prevent the corrosion of Zn.
  3. Cd metal is used in nuclear reactors as a neutron excitation material.
  4. Mercury is used extensively in the production of sodium hydroxide and chlorine gas commercially.
  1. Only 1
  2. 2 and 3
  3. 3 and 4
  4. 1, 2 and 3
  5. 2, 3 and 4
Question 8 Multiple Choice (Single Answer)

Match the following
Column - I Column - II
A. Hf 1. Polymerisation
B. Al(C2H5)3/TiCl4 2. Making of lead-free petrol
C. VC2 3. Neutron moderator
D. Pt-Re alloys 4. Acetylene production
  1. A - 2, B - 1, C - 4, D - 3
  2. A - 3, B - 4, C - 1, D - 2
  3. A - 3, B - 1, C - 4, D - 2
  4. A - 4, B - 2, C - 1, D - 2
  5. A - 4, B - 1, C - 2, D - 3
Question 9 Multiple Choice (Single Answer)

Which metal ion represents zero value of CFSE in octahedral complexes if it associated with a weak field ligand?

  1. Fe(III)
  2. Fe(II)
  3. Cr(II)
  4. Mn(I)
  5. Mn(III)
Question 10 Multiple Choice (Single Answer)

Match the list - A (metal), list - B (ore) and list - C (ore type) and select the correct answer using the codes given below the lists
List - A List - B List - C
P. Cu 1. Smaltite i. sulphide
Q. Zn 2. Chalcocite ii. arsenide
R. Fe 3. Franklinite iii. carbonate
S. Co 4. Siderite iv. oxide
  1. P - 3 - i, Q - 2 - iv, R - 4 - iii, S - 1 - ii
  2. P - 2 - i, Q - 3 - iv, R - 1 - iii, S - 4 - ii
  3. P - 2 - i, Q - 3 - ii, R - 1 - iii, S - 4 - iv
  4. P - 2 - i, Q - 3 - iv, R - 1 - ii, S - 4 - iii
  5. P - 2 - i, Q - 3 - iv, R - 4 - iii, S - 1 - ii
Question 11 Multiple Choice (Single Answer)

Which of the following statements is/are incorrect?

  1. The central metal atom shows +4 oxidation states in potassium chromate and potassium dichromate.
  2. Limonite and sphalerite are ores of zinc.
  3. Zinc oxide is known as white lead with the formula (PbCO3)2.Pb(OH)2 and is used as a whitening material.
  1. Only 1
  2. Only 2
  3. Only 3
  4. 1 and 2
  5. 2 and 3
Question 12 Multiple Choice (Single Answer)

Match the entries in Group - I with Group - II
Group - I Group - II
A. Wilkinson’s catalyst 1. Pt/PtO
B. Adams catalyst 2. [PH3P]3.Rh.Cl
C. Lazier catalyst 3. TiCl4/Al(Et)3
D. Ziegler-Natta catalyst 4. 2CuO.Cr2O3
  1. A - 2, B - 1, C - 4, D - 3
  2. A - 2, B - 4, C - 1, D - 3
  3. A - 1, B - 2, C - 4, D - 3
  4. A - 4, B - 1, C - 2, D - 3
  5. A - 4, B - 2, C - 1, D - 3
Question 13 Multiple Choice (Single Answer)

Match the entries in Group - I with Group - II
Group - I (Ores) Group - II (Corresponding metal)
P. Patronite 1. V
Q. Crocoite 2. Ni
R. Garnierite 3. Pt
S. Sperrylite 4. Cr
5. Cu
  1. P - 1, Q - 4, R - 2, S - 3
  2. P - 3, Q - 4, R - 2, S - 5
  3. P - 3, Q - 4, R - 1, S - 2
  4. P - 1, Q - 2, R - 5, S - 3
  5. P - 4, Q - 3, R - 2, S - 1
Question 14 Multiple Choice (Single Answer)

Match the following salt names with their molecular formula
(i) Fischer salt (a) [Pt(NH3)4][PtCl4]
(ii) Zeise’s salt (b) Fe2[Fe(CN)6]
(iii) Magnus’ green salt (c) K3[Co(NO2)6]
(iv) Turnbull’s blue (d) K3[Fe(CN)6]
(v) Gmelin’s salt (e) K[PtCl3(C2H4)]
  1. (i) - c, (ii) - e, (iii) - a, (iv) - b, (v) - d
  2. (i) - c, (ii) - e, (iii) - a, (iv) - d, (v) - b
  3. (i) - d, (ii) - e, (iii) - a, (iv) - c, (v) - b
  4. (i) - d, (ii) - a, (iii) - e, (iv) - c, (v) - d
  5. (i) - c, (ii) - a, (iii) - e, (iv) - b, (v) - d
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