What is the principle on which fractional distillation works?
Density of each fraction is different
Molecular weight of each fraction is different
Boiling point of each fraction is different
Melting point of each fraction is different
What is the expansion of PCRA?
Pollution Control Research Association
Petroleum Conservation Research Association
Petroleum Control Research Association
Petrol Coal Research Association
Coke is used in the manufacturing of which of the following metals?
Nickel
Chromium
Steel
Copper
Read the given statements and select the correct option.Statement 1: Coal, petroleum and natural gas can not be prepared in the laboratory.Statement 2: Their formation is a slow process and the required conditions cannot be created in the laboratory.
Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1
Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1
Statement 1 is true and statement 2 is false
Both statements 1 and 2 are false
Which of the following is the least polluting fuel for vehicles?
Coal
Petrol
CNG
Diesel
In LPG cylinder how is the gas liquefied?
By increasing the volume
By applying pressure
By increasing the temperature
By reducing the pressure
Coal tar is used in the manufacturing of which of the following products?
Synthetic dyes
Drugs
Explosives
All of the above
What is the slow process of conversion of dead vegetation into coal called?
Carbonization
Distillation
Filtration
Combustion
Which gas is obtained during the processing of coal?
Carbondioxide
Coal gas
Carbon monoxide
Sulphur dioxide
Heavy motor vehicles like trucks commonly run on which fuel?
LPG
