The correct statement regarding polymeric silicon dioxide is -

1.  Each silicon atom is surrounded by four oxygen atoms and each oxygen atom is bonded to two silicon atoms

2.  Each silicon atom is surrounded by two oxygen atoms and each oxygen atom is bonded to two silicon atoms

3.  Silicon atom is bonded to two oxygen atoms

4.  These are double bonds between silicon and oxygen atoms

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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A compound among the following that is used in cosmetic surgery is -

1. Silica

2. Silicates

3. Silicones

4. Zeolites

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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When silicon is boiled with caustic soda solution, the gas is evolved is-

1. O2

2. SiH4

3. H2

4. None of the above

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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RCl Sicu-powderR2SiCl2H2OR2SiOH2 condensation A

Compound (A) is -

1. A linear silicone

2. A chlorosilane

3. A linear silane

4. A network silane

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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A compound among the following that is not a monomer for a high molecular mass silicone polymer is-

1. Me3SiCl

2. PhSiCl3

3. MeSiCl3

4. Me2SiCl2

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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Silicon carbide is used as:

1.  Dehydrating agent

2.  Abrasive

3.  Solvent

4.  Catalyst

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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R3SiCl on complete hydrolysis forms-

1.  R3SiOH

2.  R3SiOSiR3

3.  R3Si=O

4.  None of the above

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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Assertion: Silicones are water-repelling in nature.

Reason: Silicones are organosilicon polymers, which have (-R2SiO-) as repeating units.

1.  Both assertion and reason are true and the reason is the correct explanation of assertion.

2.  Both assertion and reason are true, but the reason is not the correct explanation of assertion.

3.  Assertion is true but the reason is false.

4.  Assertion is false but the reason is true.

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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An anion present in the chain structure silicate is -

1. Si2O76-

2. (Si2O52-)n

3. (SiO32-)n

4. SiO44-

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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Assertion: If aluminium atoms replace a few silicon atoms in three-dimensional network of silicon dioxide, the overall structure acquires a negative charge.

Reason: Aluminium is trivalent while silicon is tetravalent.

1. Both assertion and reason are true and the reason is the correct explanation of assertion.

2. Both assertion and reason are true and the reason is not the correct explanation of assertion.

3. Assertion is true but the reason is false.

4. Assertion is false but the reason is true.

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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