Q. No.What is the difference in the spin-only magnetic moment (in B.M.) between manganese (Mn) in KMnO4 and manganese species in the product (X) of the given reaction?
\(\mathrm{KMnO}_4 \xrightarrow{\mathrm{H}^{+}} \mathrm{X} \text { (product having } \mathrm{Mn} \text { ) }\)
1. 2
2. 4
3. 0
4. 6
\(\mathrm{KMnO}_4 \xrightarrow{\mathrm{H}^{+}} \mathrm{X} \text { (product having } \mathrm{Mn} \text { ) }\)
1. 2
2. 4
3. 0
4. 6
Subtopic: d-Block Elements- Properties & Uses |
Level 3: 35%-60%
JEE
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The electronic configuration of Platinum (atomic number: 78) is:
| 1. | \(\mathrm{[Xe] 4f^{14} 5d^9 6s^1}\) | 2. | \(\mathrm{[Kr] 4f^{14} 5d^{10}}\) |
| 3. | \(\mathrm{[Xe] 4f^{14} 5d^{10}}\) | 4. | \(\mathrm{[Xe] 4f^{14} 5d^8 6s^2}\) |
Subtopic: d-Block Elements- Properties & Uses |
Level 3: 35%-60%
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Subtopic: d-Block Elements- Properties & Uses |
Level 3: 35%-60%
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The correct order of the following elements with respect to their density is:
1. Cr < Zn < Co < Cu < Fe
2. Zn < Cu < Co < Fe < Cr
3. Zn < Cr < Fe < Co < Cu
4. Cr < Fe < Co < Cu < Zn
Subtopic: d-Block Elements- Properties & Uses |
Level 3: 35%-60%
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When \(V_2O_5\) reacts with base and acid, X and Y are formed respectively. X and Y are:
1. \(X = VO^{3-}_4 ,~~~Y = VO^{+} _2\)
2. \(X = VO^{3-}_4 ,~~~Y = VO^{+}_4 \)
3. \(X = VO^{+}_4 ,~~~Y = VO^{3-}_4 \)
4. \(X = VO^{2+} ,~~~Y = V_2O_{3} \)
1. \(X = VO^{3-}_4 ,~~~Y = VO^{+} _2\)
2. \(X = VO^{3-}_4 ,~~~Y = VO^{+}_4 \)
3. \(X = VO^{+}_4 ,~~~Y = VO^{3-}_4 \)
4. \(X = VO^{2+} ,~~~Y = V_2O_{3} \)
Subtopic: d-Block Elements- Properties & Uses |
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Which of the following has the highest negative standard electrode potential ?
1. Ti
2. Cu
3. Mn
4. Zn
Subtopic: d-Block Elements- Properties & Uses |
Level 4: Below 35%
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White ppt of AgCl dissolves in \(NH_4OH\) due to the formation of:
1. AgOH
2. \(Ag_2O\)
3. \([Ag(NH_3)_2]Cl \)
4. \([Ag(NH_3)_4]Cl \)
1. AgOH
2. \(Ag_2O\)
3. \([Ag(NH_3)_2]Cl \)
4. \([Ag(NH_3)_4]Cl \)
Subtopic: d-Block Elements- Properties & Uses |
60%
Level 2: 60%+
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In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment?
(i) [FeF6]3–
(ii) [Co(NH3)6]3+
(iii) [NiCl4]2–
(iv) [Cu(NH3)4]2+
1. (i) > (iii) > (iv) > (ii)
2. (ii) > (iii) > (i) > (iv)
3. (iii) > (iv) > (ii) > (i)
4. (ii) > (i) > (iii) > (iv)
Subtopic: d-Block Elements- Properties & Uses |
75%
Level 2: 60%+
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Subtopic: d-Block Elements- Properties & Uses |
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The pair in the actinide series that can have the highest oxidation state is:
1. Np, Pu
2. U, Am
3. U, Cm
4. Am, Cm
1. Np, Pu
2. U, Am
3. U, Cm
4. Am, Cm
Subtopic: d-Block Elements- Properties & Uses |
75%
Level 2: 60%+
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