In NCERT Class 12 Chemistry Chapter 5, "Coordination Compounds," students learn about the formation, properties, and bonding in coordination compounds. This chapter delves into the significance of ligands, coordination number, and their role in various chemical reactions. Coordination compounds have widespread applications in industrial chemistry, medicine, and catalysis, making this chapter crucial for understanding advanced chemical bonding.
This article provides important resources for preparing for the CBSE and CUET exams, including MCQs, previous year questions, and downloadable PDFs to aid in your revision of Class 12 Chemistry Chapter 5 MCQs and previous year questions.
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NCERT Class 12 Chemistry Chapters
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Chapter Number
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Chapter Name
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Chapter I
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Chapter II
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Chapter III
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Chapter IV
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Chapter VI
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Chapter VII
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Chapter VIII
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Chapter IX
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Chapter X
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This section includes multiple-choice questions (MCQs) from previous years and expert-curated questions designed for Class 12 Chemistry Chapter 5: Coordination Compounds. Below are 5 sample questions, with a link to download the full set of MCQs in PDF format.
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1. |
What is the secondary valency of Cobalt in [Co(en2)Cl2]+ ? (a) 6 (b) 4 (c) 2 (d) 8 |
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2. |
How many ions are produced from the complex [Co(NH3)5Cl] Cl2 in solution? (a) 4 (b) 2 (c) 3 (d) 5 |
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3. |
One mole of CrCl3.6H2O compound reacts with excess AgNO3 solution to yield two moles of AgCl (s). The structural formula of the compound is (a) [Cr(H2O)5 Cl] Cl2 . H2O (b) [Cr(H2O)3 Cl3] . 3H2O (c) [Cr(H2O)4 Cl2] Cl . 2H2O (d) [Cr(H2O)6] Cl3 |
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Which of the following ligands is an ambidentate ligand? (a) CO (b) NO2 (c) NH3 (d) H2O |
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5. |
Two statements are given one labelled as Assertion (A) and the other labelled as Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below. Assertion (A): EDTA is used to determine the hardness of water. Reason (R): EDTA is a bidentate ligand. (a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A). (b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A). (c) Assertion (A) is true, but Reason (R) is false. (d) Assertion (A) is false, but Reason (R) is true. |
Here are 5 sample subjective questions based on previous years' CBSE exams (2 marks and above) for Class 12 Chemistry Chapter 5: Coordination Compounds. For the full set of subjective questions, download the PDF.
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When a coordination compound PtC14.6NH3 is mixed with AgNO3, 4 moles of AgC1 are precipitated per mole of the compound. Write: (i) Structural formula of the complex (ii) IUPAC name of the complex (CBSE 2016, 2M) |
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In coordination compounds, metals show two types of linkages, primary and secondary. Primary valencies are ionisable and are satisfied by negatively charged ions. Secondary valencies are non-ionisable and are satisfied by neutral or negative ions having lone pair of electrons. Primary valencies are non-directional while secondary valencies decide the shape of the complexes. (i) If PtCl2 . 2NH3 does not react with AgNO3, what will be its formula? (ii) What is the secondary valency of [Co(en)3]3+ ? (iii) (1) Write the formula of Iron(III) hexacyanoferrate (II). (2) Write the IUPAC name of [Co(NH3)5Cl] Cl2. OR (iii) Write the hybridization and magnetic behaviour of [Ni(CN)4]2 –. [Atomic number : Ni = 28] (CBSE 2023, 4M) |
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(i) What is a chelate complex? Give one example. (ii) What are heteroleptic complexes? Give one example. (CBSE 2023, 2M) |
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4. |
Write the IUPAC names of the following : (i) [Co(NH3)5(ONO)]2+ (ii) K2[NiCl4] (CBSE 2023, 2M) |
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Write IUPAC names of the following coordination entities: (a) [Co(NH3)4Cl(NO2)]Cl (b) [PtCl2(en)2]2+ (CBSE 2023, 2M) |
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NCERT Science Subjects
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Chapter Name |
Sub Topics of Chapter 5: Coordination Compounds |
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Coordination Compounds |
5.1 Ligands |
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5.2 Coordination Number and Geometry |
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5.3 Types of Ligands and Bonding in Complexes |
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5.4 Isomerism in Coordination Compounds |
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5.5 Applications of Coordination Compounds |
Class 12 Chemistry Chapter 5, "Coordination Compounds," plays a crucial role in understanding the advanced chemistry of transition metals. The chapter explains the formation of coordination complexes, the role of ligands, and how these complexes contribute to various chemical phenomena and applications.
By mastering the concepts of coordination compounds, students can grasp complex chemical reactions, bonding theories, and real-life applications such as catalysis, medicine, and industrial processes. This knowledge is essential for excelling in CBSE and CUET exams.
