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
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
Annealing is best described as
Slow and gradual cooling
Sudden and rapid cooling
Cooling by water
Very slow cooling
CO forms a volatile compound with
Nickel
Copper
Sodium
Aluminium
Which one of the oxides is neutral?
CO
SnO2
AnO
SiO2
An important ore of lead is
Magnesite
Carnallite
Bauxite
Galena
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 is the chemically inactive allotropic form of carbon?
Diamond
Coal
Charcoal
Animal charcoal
Ordinary glass is
Sodium silicate
Copper silicate
Calcium silicate
A mixture of calcium and sodium silicates with silica
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
