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.
on polymerisation after hydrolysis forms:
(1)
(2)
(3)
(4) None of these
Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is:
(1)
(2)
(3)
(4)
The most commonly used reducing agent is:
(1)
(2) HF
(3)
(4)
Tin plague is the:
(1) conversion of stannous to stannic
(2) conversion of white tin to grey tin
(3) emission of sound while bending a tin rod
(4) atmospheric oxidation of tin
When chlorine is passed through molten tin, the product obtained is:
(1)
(2)
(3)
(4)
Iodine is decolourised by:
(1)
(2)
(3)
(4)