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
Ordinary glass is
Sodium silicate
Copper silicate
Calcium silicate
A mixture of calcium and sodium silicates with silica
Destructive distillation of coal does not give
Carbides
Glass is soluble in
HF
H2SO4
HCIO4
Aqua- regia
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
When steam is passed through red hot coke
CO2 and H2 are obtained
CO and B2 are formed
CO and H2 are obtained
Petrol gas is obtained
Number of unpaired electrons in the ground state of the carbon atom is
2
3
4
1
CO forms a volatile compound with
Nickel
Copper
Sodium
Aluminium
Which of the following is the chemically inactive allotropic form of carbon?
Diamond
Coal
Charcoal
Animal charcoal
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
