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Inorganic Chemistry: p-block, Coordination, and Solid State

Comprehensive test covering p-block elements (boron, phosphorus, sulfur), coordination complexes, catalysts, borane clusters, crystal structures, and solid-state defects

17 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following statements is/ are false?
P. In Raschig process hydrazine is prepared from the reduction of ammonia with sodium hypochlorite in dilute aqueous solution.
Q. Borazine is known as inorganic benzene.
R. Boric acid is a dibasic acid.

  1. Only P
  2. Only Q
  3. Only P and Q
  4. Only Q and R
  5. Only P and R
Question 2 Multiple Choice (Single Answer)

Which of the following groups shows the isoelectronic species?

  1. CO, N2, O2, NO+
  2. CO, N2, O2+, CN-
  3. CO, F2, NO+, CN-
  4. CO, N2, NO+, CN-
  5. CO, N2+, NO+, CN-
Question 3 Multiple Choice (Single Answer)

Identify the false statements.
P. Hydrazine is a colourless gas and is used as a rocket fuel.
Q. PCl3 has more Lewis acid strength than PI3.
R. H2S has T-shaped geometry.
S. The sulphur atom exhibits +3 oxidation state in sodium dithionate.

  1. P and Q
  2. Q and R
  3. R and S
  4. P and S
  5. P, R and S
Question 4 Multiple Choice (Single Answer)

Among the following, an Arachno-carborane is

  1. B3C2H11
  2. B3C2H7
  3. B5CH9
  4. B7C2H13
  5. B10C2H12
Question 5 Multiple Choice (Single Answer)

The complex with tetrahedral geometry is ____________.

  1. [NiCl4]2-
  2. [Ni(CN)4]2-
  3. Cis-platin
  4. Carboplatin
  5. Zeise’s salt
Question 6 Multiple Choice (Single Answer)

Match the Group-I (oxy acids of phosphorus) with Group-II (oxidation state of P atom).
Group-I 
        </strong>|<strong>Group-II</strong>|

|A. Orthophosphoric acid|1. +1|
|B. Hypophosphoric acid|2. +3|
|C. Phosphorous acid|3. +4|
|D. Metaphosphoric acid|4. +5|

  1. A - 4, B - 3, C - 2, D - 4
  2. A - 2, B - 1, C - 3, D - 4
  3. A - 2, B - 1, C - 4, D - 1
  4. A - 1, B - 2, C - 3, D - 4
  5. A - 4, B - 3, C - 4, D - 1
Question 7 Multiple Choice (Single Answer)

Identify the unmatched pair.

  1. Wilkinson’s catalyst - Ph3RhCl/Et3Al
  2. Lindlar catalyst - PtO2
  3. Lazier’s catalyst - Cu2Cr2O5
  4. Vaska's complex - IrCl(CO)(PPh3)2
  5. Adkins catalyst - Cr/CuO
Question 8 Multiple Choice (Single Answer)

Which of the following is not an example of Closo-carboranes?

  1. B3C2H11
  2. B4C2H6
  3. B6C2H8
  4. B9C2H11
  5. B8C2H10
Question 9 Multiple Choice (Single Answer)

Match the entries in Group-I with Group-II
Group-I (Ores) 
        </strong>|<strong>Group-II (Corresponding metal)</strong>|

|P. Patronite|1. V|
|Q. Crocoisite|2. Ni|
|R. Garnierite|3. Pt|
|S. Cooperate|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 10 Multiple Choice (Single Answer)

The Styx number for pentaborane-11 is __________.

  1. 2002
  2. 3203
  3. 4012
  4. 4120
  5. 4220
Question 11 Multiple Choice (Single Answer)

Identify the incorrect statements.
P. Pentaborane-11shows symmetrical square pyramidal geometry.
Q. CsBr crystal has face centred cubic structure.
R. MgAl2O4 and Fe3O4 are identical in crystal structure.

  1. P only
  2. Q only
  3. R only
  4. P, Q
  5. Q, R
Question 12 Multiple Choice (Single Answer)

Match the entries in Column-I with Column-II
Column - I (Crystals) 
        </strong>|<strong>Column - II (Corresponding structures)</strong>|

|A. TiO2|1. perovskite|
|B. Zn2TiO4|2. rutile|
|C. CaTiO3|3. spinel|
|D. CaTiO3|4. inverse spinel|

  1. A - 3, B - 4, C - 1, D - 2
  2. A - 2, B - 1, C - 4, D - 3
  3. A - 1, B - 2, C - 4, D - 3
  4. A - 1, B - 2, C - 3, D - 4
  5. A - 2, B - 4, C - 4, D - 3
Question 13 Multiple Choice (Single Answer)

Match the Column-I with Column-II and select the correct answer using the codes given below.
Column-I (metal salts) 
        </strong>|<strong>Column-II (their common defects)</strong>|

|P. NaCl|1. metal excess defect|
|Q. FeO|2. metal deficiency defect|
|R. FeS| |
|S. NiO| |
|T. AgBr| |

  1. P - 1, Q - 2, R - 2, S - 2, T - 1
  2. P - 1, Q - 1, R - 2, S - 1, T - 1
  3. P - 2, Q - 1, R - 2, S - 1, T - 2
  4. P - 1, Q - 2, R - 1, S - 2, T - 1
  5. P - 2, Q - 1, R - 2, S - 2, T - 1
Question 14 Multiple Choice (Single Answer)

An intrinsic semiconductor has a band gap of 1.5 eV. The wavelength of the electromagnetic radiation required to cause the material photoconducting, is ________.

  1. 3525 Å
  2. 7827 Å
  3. 8272 Å
  4. 8573 Å
  5. 9368 Å
Question 15 Multiple Choice (Single Answer)

The IUPAC name for the heteropoly complex, Na3[PVMo12O40] is ___________.

  1. Tris sodium 12-molybdophosphate
  2. Tris sodium 12-molybdophosphorus(V)
  3. Sodium 12-molybdophosphate
  4. Sodiumphospho(V) molybdenum-12
  5. Tris sodiumphosphate molybdenum-12
Question 16 Multiple Choice (Single Answer)

Select the correct match using the List-A (complex/ion) and List-B (coordination number)
List-A 
        </strong>|<strong>List-B</strong>|

|P. Mn(NO)3CO|1. 3|
|Q. Mn2(CO)10|2. 2|
|R. Mn[C(SiMe3)2]2|3. 6|
|S. MnO3+|4. 4|

  1. P-3, Q-1, R-2, S-4
  2. P-4, Q-1, R-2, S-3
  3. P-4, Q-3, R-2, S-1
  4. P-2, Q-4, R-1, S-3
  5. P-3, Q-2, R-4, S-1
Question 17 Multiple Choice (Single Answer)

Identify the false statement(s).
P. B-F bond in BF3 is larger than in BF4- molecule.
Q. Borax is used as an indicator.
R. Borazine is isoelectronic with benzene and exhibits D3h symmetry.

  1. P only
  2. Q only
  3. R only
  4. P and Q
  5. Q and R
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