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प्रश्न
Match the solutions given in Column I and the colours given in Column II.
| Column I (Aqueous solution of salt) |
Column II (Colour) |
| (i) \[\ce{FeSO2.7H2O}\] | (a) Green |
| (ii) \[\ce{NiCl2.4H2O}\] | (b) Light pink |
| (iii) \[\ce{MnCl2.4H2O}\] | (c) Blue |
| (iv) \[\ce{CoC12,6H2O}\] | (d) Pale green |
| (v) \[\ce{Cu2 Cl2}\] | (e) Pink |
| (f) Colourless |
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उत्तर
| Column I (Aqueous solution of salt) |
Column II (Colour) |
| (i) \[\ce{FeSO2.7H2O}\] | (d) Pale green |
| (ii) \[\ce{NiCl2.4H2O}\] | (a) Green |
| (iii) \[\ce{MnCl2.4H2O}\] | (b) Light pink |
| (iv) \[\ce{CoC12,6H2O}\] | (e) Pink |
| (v) \[\ce{Cu2 Cl2}\] | (f) Colourless |
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संबंधित प्रश्न
Which of the following cations are coloured in aqueous solutions and why ?
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Mn3+, Cr3+, V3+ and Ti3+. Which one of these is the most stable in an aqueous solution?
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| Example | Magnetic Moment (BM) |
| K2[MnCl4] | 5.9 |
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(C) Spiegeleisen
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When a brown compound of manganese (A) is treated with \[\ce{HCl}\] it gives a gas (B). The gas taken in excess, reacts with \[\ce{NH3}\] to give an explosive compound (C). Identify compounds A, B and C.
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| Column I (Property) | Column II (Metal) | |
| (i) | Element with highest second ionisation enthalpy |
(a) \[\ce{Co}\] |
| (ii) | Element with highest third ionisation enthalpy |
(b) \[\ce{Cr}\] |
| (iii) | \[\ce{M}\] in \[\ce{M(CO)6}\] is | (c) \[\ce{Cu}\] |
| (iv) | Element with highest heat of atomisation |
(d) \[\ce{Zn}\] |
| (e) \[\ce{Ni}\] |
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Carbonyl \[\ce{M(CO)5}\]
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The trend of which property is represented by the following graph?
