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 halides is least stable and has doubtful existence?
CI4
SnI4
GeI4
PbI4
Graphite is a good conductor of electricity because it contains
Bonded electrons
Mobile electrons
Strong C = C bonds
Sp2 hybridization
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
Coke
Gas carbon
Carbides
Coal-tar
Which of the following is not hydrolyzed?
CCI4
SiCI4
SnCI4
PbCI4
When the destructive distillation of coal is done, the non-volatile residue left in the retort is
Option 4 Goes Here
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
In group IVA or 14 of the extended form of the periodic table, with increase in atomic number, the metallic character.
Increase
Decrease
Remains the same
First increases then decreases
An alloy, which does not contain copper is
Bell metal
Brozone
Brass
Solder
