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Test: Coordination Compounds - 1 - NEET MCQ


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25 Questions MCQ Test Chemistry Class 12 - Test: Coordination Compounds - 1

Test: Coordination Compounds - 1 for NEET 2024 is part of Chemistry Class 12 preparation. The Test: Coordination Compounds - 1 questions and answers have been prepared according to the NEET exam syllabus.The Test: Coordination Compounds - 1 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Coordination Compounds - 1 below.
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Test: Coordination Compounds - 1 - Question 1

Which among the following is an ambidentate ligand?

Detailed Solution for Test: Coordination Compounds - 1 - Question 1

Ambidentate Ligand: Nitro

  • An ambidentate ligand is a type of polydentate ligand that can bind to a central atom in multiple ways because it has two or more donor atoms, but uses only one of them in forming a coordinate bond at a time.
  • Nitro (NO2-) is an example of an ambidentate ligand. It can coordinate to the central metal atom either through the nitrogen atom (forming a nitro complex) or through one of the oxygen atoms (forming a nitrito complex).
  • The other options provided do not have this property. Oxalate is a bidentate ligand, meaning it simultaneously uses both of its oxygen atoms to bind to the central atom. Carbonyl is a monodentate ligand, it can only bind through the carbon atom of the C=O group. Acetate is also a monodentate ligand, it can only bind through the oxygen atom of the C=O group.

Therefore, among the given options, only Nitro is an ambidentate ligand.

Test: Coordination Compounds - 1 - Question 2

Which of the following represents chelating ligand?

Detailed Solution for Test: Coordination Compounds - 1 - Question 2

Explanation of Chelating Ligand
A chelating ligand is a molecule that forms multiple bonds with a single metal ion. In other words, it can bind to a metal ion at more than one point, creating a ring-like structure. This process is known as chelation. Chelating ligands have two or more donor atoms, which allow them to form multiple bonds with a single metal ion. These ligands are used in various fields such as medicine, chemistry, and environmental science due to their ability to sequester metal ions.

Examination of Options
A: Cl- Chloride ion (Cl-) is a monodentate ligand, meaning it can bind to a metal ion at only one point. Therefore, it is not a chelating ligand.
B: DMG DMG, or Dimethylglyoxime, is a type of ligand that can bind to a metal ion at two points, forming a five-membered ring. Thus, DMG is a chelating ligand.
solution
C: H2O Water (H2O) is a monodentate ligand, meaning it can bind to a metal ion at only one point. Therefore, it is not a chelating ligand.
D: OH- Hydroxide ion (OH-) is a monodentate ligand, meaning it can bind to a metal ion at only one point. Therefore, it is not a chelating ligand.

Conclusion
Therefore, out of the given options, only DMG (Dimethylglyoxime) is a chelating ligand. Hence, the correct answer is B: DMG.

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Test: Coordination Compounds - 1 - Question 3

The coordination number of Cr in  [Cr (NH3)3 (H2O)3]

Detailed Solution for Test: Coordination Compounds - 1 - Question 3
  • The coordination number refers to the number of bonds formed between the central metal ion and surrounding ligands.
  • In [Cr(NH3)3(H2O)3], chromium (Cr) is surrounded by three ammonia (NH3) molecules and three water (H2O) molecules.
  • Each ligand forms one bond with the chromium ion, totaling six bonds.
  • Thus, the coordination number of chromium in this complex is 6.
Test: Coordination Compounds - 1 - Question 4

Which of the following complex will give white precipitate with barium chloride solution?

Detailed Solution for Test: Coordination Compounds - 1 - Question 4

Since the reagent is BaCl2(aq), displacement reaction will take place. The resulting solution, if insoluble in water, will form a white precipitate. Both BaNO2 and BaCl2 are soluble in water and hence will not form a precipitate. BaSO4, however, is insoluble in water and hence forms a white precipitate.

Test: Coordination Compounds - 1 - Question 5

The IUPAC name [CoCl(NO2)(en)2]Cl is

Detailed Solution for Test: Coordination Compounds - 1 - Question 5

Name of ligands name first in alphabetical order followed by anme of central ion.

Test: Coordination Compounds - 1 - Question 6

The effective atomic number of Fe in Fe(CO)is

Detailed Solution for Test: Coordination Compounds - 1 - Question 6

Test: Coordination Compounds - 1 - Question 7

The oxidation state of Ag in tollen’s reagent is

Detailed Solution for Test: Coordination Compounds - 1 - Question 7

oxidation state of Ag in tollen’s reagent is +1.

Test: Coordination Compounds - 1 - Question 8

Which is not true about a ligand?

Detailed Solution for Test: Coordination Compounds - 1 - Question 8

Multidentate ligand always act as chelating Ligand

Test: Coordination Compounds - 1 - Question 9

In which of the following complexes, the nickel metal is in the highest oxidation state?

Detailed Solution for Test: Coordination Compounds - 1 - Question 9

In A Ni has +4 oxidation state.

Test: Coordination Compounds - 1 - Question 10

KCl.MgCl2.6H2O is a

Detailed Solution for Test: Coordination Compounds - 1 - Question 10

KCl.MgCl2.6H2O is double salt

Test: Coordination Compounds - 1 - Question 11

Which of the following can be termed as mixed complex?

Detailed Solution for Test: Coordination Compounds - 1 - Question 11

In A one and more different types of ligands are present.

Test: Coordination Compounds - 1 - Question 12

Which of the following ligand gives chelate complexes?

Detailed Solution for Test: Coordination Compounds - 1 - Question 12

Oxalate is a bidentate ligand.

Test: Coordination Compounds - 1 - Question 13

In the formation of complex entity, the central atom/ion acts as

Detailed Solution for Test: Coordination Compounds - 1 - Question 13

Central Metal ion behave as a Lewis Acid while Ligand act as a lewis Base.

Test: Coordination Compounds - 1 - Question 14

Which of the following is a negative ligand?

Detailed Solution for Test: Coordination Compounds - 1 - Question 14

C5H5a negative ligand.

Test: Coordination Compounds - 1 - Question 15

The correct IUPAC name of  Mn3(C0)12 is

Detailed Solution for Test: Coordination Compounds - 1 - Question 15

Ligands are named 1st followed by the name of central metal ion.

Test: Coordination Compounds - 1 - Question 16

Which is used in cancer therapy?

Detailed Solution for Test: Coordination Compounds - 1 - Question 16

Cis Platin (cis – [Pt(NH3)2(Cl)2] is a anti cancer drug.

Test: Coordination Compounds - 1 - Question 17

The IUPAC name of AlCl3.4(EtOH) is

Detailed Solution for Test: Coordination Compounds - 1 - Question 17

This is double salt so name is written in sequential manner.

Test: Coordination Compounds - 1 - Question 18

Sodium pentacyanonitrosylferrate(II) is also called?

Detailed Solution for Test: Coordination Compounds - 1 - Question 18

Na2[Fe(CN)5NO] is Sodium nitroprusside.

Test: Coordination Compounds - 1 - Question 19

A complex involving dsp2 hybridization has

Detailed Solution for Test: Coordination Compounds - 1 - Question 19

dsp2 is square planar geometry.

Test: Coordination Compounds - 1 - Question 20

In the complex Fe(CO)x, the value of x is

Detailed Solution for Test: Coordination Compounds - 1 - Question 20

Complex carbonyls follow Sidwick's EAN rule i.e compound with EAN 36 will be relatively more stable than other metal carbonyls. Iron pentacarbonyl has EAN number of 36 = Z−X+Y = (26−0+2x)
[Z = atomic number, X = oxidation state of metal, Y= total electrons donated by ligand]
∴x = 5. So, the formula will be Fe(CO)5.

Test: Coordination Compounds - 1 - Question 21

Which among the following has square pyramidal geometry?

Detailed Solution for Test: Coordination Compounds - 1 - Question 21

Bis(acetylacetonato)oxovanadium(IV) has square pyramidal geometry.

Test: Coordination Compounds - 1 - Question 22

The hybridization of nickel in tetracarbonyl nickel is

Detailed Solution for Test: Coordination Compounds - 1 - Question 22

[Ni(CO)4] has tetrahedral geometry so hybridisation is sp3

Test: Coordination Compounds - 1 - Question 23

According to Werner’s theory , the primary valences of the central atom

Detailed Solution for Test: Coordination Compounds - 1 - Question 23

Primary valency is equal to no. of ligands attachted which are negatively charges.

Test: Coordination Compounds - 1 - Question 24

The EAN of Ni in [Ni(CN)4]2-- is

Detailed Solution for Test: Coordination Compounds - 1 - Question 24

EAN = 28 (Z) – 2 (oxidation number) + 2*4 (CN) = 34

Hence A

Test: Coordination Compounds - 1 - Question 25

In the complex PtCl4.3NH3 the number of ionisable chlorines is

Detailed Solution for Test: Coordination Compounds - 1 - Question 25

The complex [PtCl3(NH3)3]Cl has only one ionisable chlorine

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