Ordinary glass is
Sodium silicate
Copper silicate
Calcium silicate
A mixture of calcium and sodium silicates with silica
Which of the following statements is not correct?
Lead salts are slow poisons
Lead metals is used in accumulators
Plumbosolvency increases by the presence of carbonates, sulphate, phosphates etc.
Lead is a soft metal
When the destructive distillation of coal is done, the non-volatile residue left in the retort is
Gas carbon
Coke
Coal-tar
Option 4 Goes Here
Which of the following halides is least stable and has doubtful existence?
CI4
SnI4
GeI4
PbI4
Annealing is best described as
Slow and gradual cooling
Sudden and rapid cooling
Cooling by water
Very slow cooling
For complete combustion of a fuel we shall need
High temperature
An excess of air
High air pressure
An excess of air and high temperature
Graphite is a good conductor of electricity because it contains
Bonded electrons
Mobile electrons
Strong C = C bonds
Sp2 hybridization
Destructive distillation of coal does not give
Carbides
An alloy, which does not contain copper is
Bell metal
Brozone
Brass
Solder
Which of the following is not hydrolyzed?
CCI4
SiCI4
SnCI4
PbCI4
