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
Destructive distillation of coal does not give
Coke
Gas carbon
Carbides
Coal-tar
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
CO forms a volatile compound with
Nickel
Copper
Sodium
Aluminium
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
Ordinary glass is
Sodium silicate
Copper silicate
Calcium silicate
A mixture of calcium and sodium silicates with silica
Which of the following is not hydrolyzed?
CCI4
SiCI4
SnCI4
PbCI4
Which of the following is the chemically inactive allotropic form of carbon?
Diamond
Coal
Charcoal
Animal charcoal
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