Aqueous solution of sodium silicate is:

(1) acidic

(2) alkaline

(3) neutral

(4) insoluble

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 69%
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Quartz is made of silicon and oxygen joined in a network arrangement that is similar to:

1. Diamond

2. Graphite

3. O2

4. None of the above

Subtopic:  Compounds of Boron- Preparations, Properties & Uses |
 60%
From NCERT
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The product obtained when silica reacts with hydrogen fluoride is:

1. SiF4

2. H2SiF6

3. H2SiF4

4. H2SiF3

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
From NCERT
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Silica reacts with Mg to form a magnesium compound (A). (A) react with dil. HCl and forms (B). (B) is:

(1) MgSiO

(2) MgO

(3) MgCl2

(4) SiCl4

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 69%
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Silica is reacted with sodium carbonate. Which is the gas liberated?

(1) CO

(2) O2

(3) O3

(4) CO2

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 72%
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Quartz is an example of:

(1) chain silicate

(2) sheet silicate

(3) cyclic silicate

(4) three dimensional network silicate

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 71%
From NCERT
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The products of the following reaction are;

SiO2+C

1. SiC and CO2

2. SiO and CO

3. SiC and CO

4. Si and CO2

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
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Which of the following shows bonding in silicone?

1. Si-C-Si-O-Si

2. Si-C-Si-C-Si

3.       l             l             l
-Si-O-Si-O-Si-

4. Si-Si-Si-Si

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 94%
From NCERT
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R3SiCl on polymerisation after hydrolysis forms:

(1) R3SiOH

(2) R3Si-O-SiR3

(3) R2Si=O

(4) None of these

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 54%
From NCERT
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Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is:

(1) R4Si

(2) RSiCl3

(3) R2SiCl2

(4) R3SiCl

Subtopic:  Properties of Structure of SiO2 & Other Compounds |
 53%
From NCERT
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