Which one of the following is a renewable resource?
Coal
Petroleum
Natural gas
Air
What is used in place of coal-tar for metaling the roads?
Coal tar
Bitumen
Coke
None of these
What is the main source of transportation of natural gas?
Cylinders
Barriers
Pipes
It cannot be transported.
What is the product obtained when the dry distillation of coal is taking place?
Water gas
Producer gas
Coal gas
Petroleum is mixture of?
Petrol
Diesel
Lubricating oil
All of these
___________ was used for street lighting for the first time in London.
none of these
Earlier 'it' was used for street lightning.Now 'it' is used as a source of heat rather than light.'It' is
Coal tar is a
Black, thick liquid.
Dark, oily liquid.
Tough, porous and black substance.
Gas.
