In which of the following pairs, both the species are not isostructural?

1. SiCl4, PCl4+
2. Diamond, silicon carbide
3. NH3, PH3
4. XeF4,XeO4

 

Subtopic:  Carbon Family - Preparations, Properties & Uses |
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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 |
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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 |
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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 |
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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 |
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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 |
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Silicate, among the following, that has only one oxygen atom of [SiO4]4- shared with the next unit is :

1.  Sheet silicate
2.  Pyrosilicate
3.  Three dimensional silicate
4.  Linear chain silicate

Subtopic:  Carbon Family - Preparations, Properties & Uses |
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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 |
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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 |
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Which one of the following anions is present in the chain structure silicates?

1. Si2O76-

2. (Si2O52-)n

3. (SiO32-)n

4. SiO44-

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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