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. \(\mathrm{XeF}_4, \mathrm{XeO}_4\)
 

Subtopic:  Carbon Family - Preparations, Properties & Uses |
 63%
From NCERT
NEET - 2015
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The 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

Subtopic:  Boron Family- Preparations, Properties & Uses |
 89%
From NCERT
NEET - 2015
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A compound among the following having a similar structure to graphite is:

1. B
2. B4C
3. B2H6
4. BN

Subtopic:  Carbon Family - Preparations, Properties & Uses |
 63%
From NCERT
AIPMT - 2013
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Which of these is not a monomer for a high molecular mass silicone polymer?

1. Me2SiCl2 2. Me3SiCl
3. PhSiCl3 4. MeSiCl3
Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 57%
From NCERT
AIPMT - 2013
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The basic structural unit of silicates is:

1. SiO44–

2. SiO32–

3. SiO42–

4. SiO

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 74%
From NCERT
AIPMT - 2013
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Incorrect statement among the following is: 
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.
Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 74%
From NCERT
NEET - 2013
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A compound among the following that is least likely to behave as a Lewis base is:

1. NH3 2. BF3
3. OH- 4. H2O
Subtopic:  Anomalous Behaviour of B & C |
 79%
From NCERT
AIPMT - 2011
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Silicate, among the following, has only one oxygen atom of \([SiO_4]^{4-}\) shared with the next unit:
1. Sheet silicate 2. Pyrosilicate
3. Three dimensional silicate 4. Linear chain silicate
Subtopic:  Carbon Family - Preparations, Properties & Uses |
 59%
From NCERT
AIPMT - 2011
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Which of the following oxide is amphoteric?

1. CO2 

2. SnO2

3. CaO 

4. SiO2

Subtopic:  Properties of Glass, Pb & Sn compounds |
 92%
From NCERT
AIPMT - 2011
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Which 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.

Subtopic:  Boron Family- Preparations, Properties & Uses |
 57%
From NCERT
AIPMT - 2011
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