NCERT Class 12 Chemistry Chapter 5 Coordination Compounds Test Mock Test
This free online test covers Chapter 5, Coordination Compounds, from the NCERT Class 12 Chemistry-I textbook. The 30 questions are written directly from the chapter — definitions, processes, worked examples and the points the book italicises — so a score here tells you how much of the chapter actually stuck, not how well you guess. Each answer carries an explanation that says why the right option is right and why the other three fail, which is where most of the learning happens. Attempt it after your first read of the chapter, then again before the exam. There is no negative marking, and you can review the full solution the moment you submit.
Duration
30 mins
Questions
30 MCQs
Total Marks
30 pts
Negative
0 per wrong
Topics Covered in This Paper
Sample Questions
Q1.One mole of the yellow compound CoCl3.6NH3 gives three moles of AgCl with excess silver nitrate, while one mole of the purple CoCl3.5NH3 gives only two. Werner explained this by proposing that:
- ASix groups in all stay bound directly to the cobalt ion, and only the chloride ions outside that group are precipitated
- BSome of the chloride is converted to chlorate during the reaction
- CAmmonia reacts with silver nitrate and so uses up some of the reagent
- DThe cobalt ion changes its oxidation state as ammonia is removed
Q2.In Werner's theory, primary and secondary valences differ in that:
- APrimary valences are non-ionisable while secondary valences are ionisable
- BPrimary valences are ionisable and are satisfied by negative ions, while secondary valences are non-ionisable and are satisfied by neutral molecules or negative ions
- CPrimary valences are equal to the coordination number and are fixed for a metal
- DPrimary valences determine the spatial arrangement of the groups around the metal
Q3.Double salts such as carnallite, KCl.MgCl2.6H2O, and potash alum differ from complexes such as K4[Fe(CN)6] in that a double salt:
- ADissociates completely into simple ions when dissolved in water
- BContains no water of crystallisation in its formula
- CCannot be formed by combining two stable compounds in a stoichiometric ratio
- DRetains its identity in solution while the complex breaks up into simple ions
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Disclaimer: The questions provided here are extracted and digitized from previous year papers using automated processes. They may contain typographical errors, formatting issues, or minor variations from the actual examination paper. While we have done our best to verify the accuracy of the official answer keys, discrepancies may occasionally exist. Please refer to the official commission website for the most authentic paper.
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FAQ
Frequently asked questions
Frequently Asked Questions
- How many questions are in the NCERT Class 12 Chemistry Chapter 5 Coordination Compounds Test mock test?
- This paper has 30 multiple-choice questions carrying 30 marks in total, to be attempted in 30 minutes.
- Is the NCERT Class 12 Chemistry Chapter 5 Coordination Compounds Test mock test free to attempt?
- Yes. You can attempt the full paper online for free on AI Test Planet, and see your score and correct answers immediately after submitting.
- Does this paper have negative marking?
- No, there is no negative marking on this paper, so an attempted guess costs you nothing.
- Are solutions and explanations available?
- Yes. After you submit, every question shows the correct answer with a step-by-step explanation, along with a topic-wise breakdown of your performance.