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Q. No.In which of the following pairs, both the species are not isostructural?
1. \(\mathrm{SiCl}_4, \mathrm{PCl}_4^{+}\)
2. Diamond, silicon carbide
3. \(\mathrm{NH}_3, \mathrm{PH}_3\)
4. \(\mathrm{XeF}_4, \mathrm{XeO}_4\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe stability of +1 oxidation state among Al, Ga, In and Tl increases in the sequence?
1. Ga < ln < Al < Tl
2. Al < Ga < ln < Tl
3. Tl < ln < Ga < Al
4. ln < Tl < Ga < Al
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA compound among the following having a similar structure to graphite is:
1. B
2. B4C
3. B2H6
4. BN
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of these is not a monomer for a high molecular mass silicone polymer?
| 1. | Me2SiCl2 | 2. | Me3SiCl |
| 3. | PhSiCl3 | 4. | MeSiCl3 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe basic structural unit of silicates is:
1. SiO44–
2. SiO32–
3. SiO42–
4. SiO
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | Quartz is extensively used as a piezoelectric material. |
| 2. | Silicones are a group of organosilicon polymers, which have (-R2SiO-) as a repeating unit. |
| 3. | Basic structural unit in silicates is the SiO44– tetrahedron. |
| 4. | Feldspars are not aluminosilicates. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA compound among the following that is least likely to behave as a Lewis base is:
| 1. | NH3 | 2. | BF3 |
| 3. | OH- | 4. | H2O |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | Sheet silicate | 2. | Pyrosilicate |
| 3. | Three dimensional silicate | 4. | Linear chain silicate |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following oxide is amphoteric?
1. CO2
2. SnO2
3. CaO
4. SiO2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following statements is incorrect?
| 1. | NaHCO3 on heating gives Na2CO3. |
| 2. | Pure sodium metal dissolves in liquid ammonia to give a blue solution. |
| 3. | NaOH reacts with glass to give sodium silicate. |
| 4. | Aluminium reacts with excess NaOH to give Al(OH)3. |
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