Graphite is a good conductor of electricity because it contains
Bonded electrons
Mobile electrons
Strong C = C bonds
Sp2 hybridization
An alloy, which does not contain copper is
Bell metal
Brozone
Brass
Solder
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
Identify the correct statement with respect to CO
It combines with water to give carbonic acid
It combines with haemoglobin of the blood
It is a powerful oxidizing agent
It is used to prepare aerated water
An important ore of lead is
Magnesite
Carnallite
Bauxite
Galena
Which of the following is not hydrolyzed?
CCI4
SiCI4
SnCI4
PbCI4
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
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
Which of the following is the chemically inactive allotropic form of carbon?
Diamond
Coal
Charcoal
Animal charcoal
If CO2 is passed in excess into limewater, the milkiness first formed disappears due to.
Reversal of the original reaction
Formation of volatile calcium derivative
Formation of water soluble calcium bicarbonate
The solution getting heated by exothermic reaction
