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Q. No.| 1. | \(\mathrm{CrO}_4^{2-} \) | 2. | \(\mathrm{Cr}_2 \mathrm{O}_7^{2-} \) |
| 3. | \(\mathrm{MnO}_4^{-} \) | 4. | \(\mathrm{MnO}_4^{2-}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch Column I with Column II and mark the most appropriate option:
| Column I (Metal ion) |
Column II (Spin magnetic moment) |
| A. Co3+ | i. √8 B.M. |
| B. Cr3+ | ii. √35 B.M. |
| C. Fe3+ | iii. √15 B.M. |
| D. Ni2+ | iv. √24 B.M. |
| A | B | C | D | |
| 1. | iv | iii | ii | i |
| 2. | i | ii | iii | iv |
| 3. | iv | i | ii | iii |
| 4. | iii | iv | i | ii |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyName the gas that can readily decolourise acidified KMnO4 solution.
(1) CO2
(2) SO2
(3) NO2
(4) P2O5
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA gas that can readily decolorize an acidified KMnO4 solution is:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyHgCl2 and I2 both, when dissolved in water containing ions the pair of species formed is:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe reason for a greater range of oxidation states in actinoids is attributed to:
1. Actinoid contraction
2. 5f, 6d and 7s levels having comparable energies.
3. 4f and 5d levels being close in energies.
4. The radioactive nature of actinoids
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe incorrect statement regarding the lanthanons is ;
| 1. | Europium shows +2 oxidation state |
| 2. | The basicity decreases as the ionic radius decreases from Pr to Lu |
| 3. | All the lanthanons are much more reactive than aluminium |
| 4. | Ce (+4) solutions are widely used as oxidising agents in volumetric analysis |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyZinc can be coated on iron to produce galvanised iron, but the reverse is not possible because:
| 1. | Zinc is lighter than iron. |
| 2. | Zinc has a lower melting point than iron. |
| 3. | Zinc has a lower negative reduction potential than iron. |
| 4. | Zinc has a higher negative reduction potential than iron. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen copper is heated with conc. HNO3 it produces:
1. Cu(NO3) and NO
2. Cu(NO3)2, NO and NO2
3. Cu(NO3)2 and N2O
4. Cu(NO3)2 and NO2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | [Xe] 4f6 5d1 6s2, [Xe]4f7 5d1 6s2, and [Xe] 4f9 6s2
|
| 2. | [Xe] 4f6 5d1 6s2, [Xe] 4f75d1 6s2, and [Xe]4f8 5d1 6s2
|
| 3. | [Xe] 4f7 6s2, [Xe]4f7 5d1 6s2, and [Xe] 4f9 6s2
|
| 4. | [Xe] 4f7 6s2, (Xe]4f8 6s2, and [Xe]4f8 5d1 6s2 |
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