Which is formed when vapours are passed over hot Mg?
(1)
(2)
(3)
(4)
Asbestors is chemically:
1. silicate of calcium and magnesium
2. calcium alumino silicate
3. magnesium alumino silicates
4. calcium silicate + calcium aluminates
Aqueous solution of sodium silicate is:
(1) acidic
(2) alkaline
(3) neutral
(4) insoluble
Quartz is made of silicon and oxygen joined in a network arrangement that is similar to:
1. Diamond
2. Graphite
3.
4. None of the above
The product obtained when silica reacts with hydrogen fluoride is:
1. SiF4
2. H2SiF6
3. H2SiF4
4. H2SiF3
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)
(4)
Silica is reacted with sodium carbonate. Which is the gas liberated?
(1) CO
(2)
(3)
(4)
Quartz is an example of:
(1) chain silicate
(2) sheet silicate
(3) cyclic silicate
(4) three dimensional network silicate
The products of the following reaction are;
1. SiC and
2.
3. SiC and CO
4. Si and
Which of the following shows bonding in silicone?
1.
2.
3.
4.