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.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe pair of compounds that can exist together is:
1. FeCl3, SnCl2
2. HgCl, SnCl2
3. FeCl2, SnCl2
4. FeCl3, Kl
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich 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 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following exhibits only a +3 oxidation state?
1. | Th | 2. | Ac |
3. | Pa | 4. | U |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology