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Q. No.Aluminium becomes passive in nitric acid because it-
1. Is a noble metal
2. Forms a thin film of oxide
3. Has a positive reduction potential
4. None of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe stability of the +1 oxidation state increases in the sequence:
1. Al <Ga<In<Tl
2. Tl<In<Ga<Al
3. In<Tl<Ga<Al
4. Ga<In<Al<Tl
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBorax bead test is responded by:
1. Divalent metals
2. Heavy metals
3. Light metals
4. Metal which forms coloured metaborates
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the species given in Column I with the properties mentioned in Column II.
| Column I | Column II |
| A. \(\text{BF}^-_4\) | 1. Oxidation state of the central atom is +4 |
| B. AlCl3 | 2. Tetrahedral shape |
| C. SnO | 3. Lewis acid |
| D. PbO2 | 4. Can be further oxidized |
Codes:
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAluminium chloride in acidified aqueous solution forms a complex 'A'.
The formula of A and hybridisation state of Al in 'A' is respectively:
1. [Al(H2O)6]3+, sp3d2
2. [Al(H2O)4]3+, sp3
3. [Al(H2O)4]3+, dsp2
4. [Al(H2O)]3+, d2sp3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch the species given in Column I with properties given in Column II.
| Column I | Column II | ||
| A. | Diborane | 1. | Used as a flux for soldering metals |
| B. | Quartz | 2. | Crystalline form of silica |
| C. | Borax | 3. | Banana bonds |
| D. | Aluminosilicate | 4. | Used as a catalyst in petrochemical industries |
| A | B | C | D | |
| 1. | 3 | 4 | 1 | 2 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 3 | 2 | 1 | 4 |
| 4. | 4 | 1 | 3 | 2 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIonization enthalpy () for the elements of Group 13 follows the order.
| 1. | B > Al > Ga > In > Tl | 2. | B < Al < Ga < In < Tl |
| 3. | B < Al > Ga < In > Tl | 4. | B > Al < Ga > In < Tl |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAluminium reacts with concentrated HCl and concentrated NaOH to liberate which of the following gases respectively-
| 1. | \(\mathrm{H}_2 ~\text{and} ~\mathrm{H}_2 \) | 2. | \(\mathrm{O}_2 ~\text{and} ~\mathrm{O}_2 \) |
| 3. | \(\mathrm{O}_2 ~\text{and} ~\mathrm{H}_2 \) | 4. | \(\mathrm{H}_2 ~\text{and} ~\mathrm{O}_2 \) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct order of atomic radii of the group 13 elements is-
1. B < Al < In < Ga < Tl
2. B < Al < Ga < In < Tl
3. B < Ga < Al < Tl < In
4. B < Ga < Al < In < Tl
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biologyon hydrolysis gives -
1.
2.
3.
4.
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