Q50.Identify incorrect statement : (1) Cu2O is colourless. (2) Copper (I) compounds are colourless except when colour results from charge transfer. (3) Copper (I) compounds are diamagnetic. (4) Cu2 S is black.
What This Question Tests
This question assesses the understanding of common properties of copper (I) compounds, particularly their color and magnetic nature based on electronic configuration.
Concepts Tested
📚 NCERT Sections This Tests
5.19 — [Cr(Nh3)6] 3+ Is Paramagnetic While [Ni(Cn)4] 2– Is Diamagnetic. Explain Why?
Chemistry Class 11 · Chapter 5
5.19 [Cr(NH3)6] 3+ is paramagnetic while [Ni(CN)4] 2– is diamagnetic. Explain why? 5.20 A solution of [Ni(H2O)6] 2+ is green but a solution of [Ni(CN)4] 2– is colourless. Explain. 5.21 [Fe(CN)6] 4– and [Fe(H2O)6] 2+ are of different colours in dilute solutions. Why?
4.11 — Explain Giving Reasons:
Chemistry Class 11 · Chapter 4
4.11 Explain giving reasons: (i) Transition metals and many of their compounds show paramagnetic behaviour. (ii) The enthalpies of atomisation of the transition metals are high. (iii) The transition metals generally form coloured compounds. (iv) Transition metals and their many compounds act as good catalyst.
5.13 — Aqueous Copper Sulphate Solution (Blue In Colour) Gives:
Chemistry Class 11 · Chapter 5
5.13 Aqueous copper sulphate solution (blue in colour) gives: (i) a green precipitate with aqueous potassium fluoride and (ii) a bright green solution with aqueous potassium chloride. Explain these experimental results.
📋 Question Details
- Chapter
- d-block & f-block Elements
- Topic
- Properties of Copper compounds
- Year
- 2013
- Shift
- 23 Apr Online
- Q Number
- Q50
- Type
- Conceptual
- NCERT Ref
- Class 12 Chemistry Ch 8: The d- and f-Block Elements
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