Q. No.Assuming complete ionization, same moles of which of the following compounds will require the least amount of acidified KMnO4 for complex oxidation?
1.
2.
3.
4.
Subtopic: d-Block Elements- Properties & Uses |
52%
From NCERT
NEET - 2015
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Which of the following processes does not involve the oxidation of iron?
| 1. | Rusting of iron sheets |
| 2. | Decolourisation of blue CuSO4 solution by iron |
| 3. | Formation of Fe(CO)5 from Fe |
| 4. | Liberation of H2 from steam by iron at high temperature |
Subtopic: d-Block Elements- Properties & Uses |
69%
From NCERT
NEET - 2015
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The pair of compounds that can exist together is:
1. FeCl3, SnCl2
2. HgCl, SnCl2
3. FeCl2, SnCl2
4. FeCl3, Kl
Subtopic: d-Block Elements- Properties & Uses |
52%
From NCERT
AIPMT - 2014
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Identify the correct order of solubility in aqueous medium:
1. ZnS > Na2S > CuS
2. Na2S > CuS > ZnS
3. Na2S > ZnS > Cus
4. Cus > ZnS > Na2S
2. Na2S > CuS > ZnS
3. Na2S > ZnS > Cus
4. Cus > ZnS > Na2S
Subtopic: d-Block Elements- Properties & Uses |
AIPMT - 2013
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Hints
The incorrect statement among the following regarding interstitial compounds is:
1. They are chemically reactive.
2. They are much harder than the pure metal.
3. They have a higher melting point than pure metals.
4. They retain metallic conductivity.
Subtopic: d-Block Elements- Properties & Uses |
80%
From NCERT
AIPMT - 2013
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Sc(Z = 21) is a transition element but Zn (Z = 30) is not because:
| 1. | Both Sc3+ and Zn2+ ions are colourless and form white compounds |
| 2. | In the case of Sc, 3d orbitals are partially filled but in Zn, these are fully filled. |
| 3. | The last electron is assumed to be added to the 4s level in the case of Zn |
| 4. | Both Sc and Zn do not exhibit variable oxidation states. |
Subtopic: d-Block Elements- Properties & Uses |
89%
From NCERT
NEET - 2013
Please attempt this question first.
Hints
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Which of the following statements is false?
| 1. | On passing H2S through acidified K2Cr2O7 solution, a milky colour is observed. |
| 2. | Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis. |
| 3. | K2Cr2O7 solution in an acidic medium is orange. |
| 4. | K2Cr2O7 solution becomes yellow in increasing the pH beyond 7 |
Subtopic: d-Block Elements- Properties & Uses |
69%
From NCERT
AIPMT - 2012
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The catalytic activity of transition metals and their compounds is ascribed mainly to:
1. their unfilled d-orbitals
2. their ability to adopt variable oxidation states
3. their chemical reactivity
4. their magnetic behaviour
Subtopic: d-Block Elements- Properties & Uses |
85%
From NCERT
AIPMT - 2012
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Which one of the following does not correctly represent the correct order of the property indicated against it?
| 1. | Ti3+< V3+< Cr3+< Mn3+: increasing magnetic moment |
| 2. | Ti < V < Cr < Mn : increasing melting point |
| 3. | Ti < V < Mn < Cr : increasing 2nd ionization enthalpy |
| 4. | Ti < V < Cr < Mn : increasing number of oxidation states |
Subtopic: d-Block Elements- Properties & Uses |
62%
From NCERT
AIPMT - 2012
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Subtopic: d-Block Elements- Properties & Uses |
62%
From NCERT
AIPMT - 2012
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
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NEET 2023 - Target Batch - Aryan Raj Singh
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