All from oil products, - gasoline, kerosene and diesel.
It depends on the type of aircraft
Not a good idea, as the fuel is considered contaminated. The fuel is usually recycled.
Those are external fuel tanks, which can be dropped from the plane in flight when they run out of fuel, increasing the aircraft's range. They are also usually dropped when entering a dogfight, in order to reduce weight and make the aircraft more aerodynamic.
air fuel
Aircraft fuel discharge a huge amount of energy in combustion rather than ordinary fuel such as petrol and diesel.
The fuel consumption of airbus A319 aircraft is 0.07 KM per liter.
Depends on the size and type of Aircraft. Link provided below llist fuel consumption for various Aircraft.
They are added fuel tanks so the aircraft can carry more than the normal amount of fuel ; for example, for longer range, or greater endurance.
You would have to specify a particular aircraft, "fighter aircraft" is too broad a definition.
When they put fuel in an airplane
fuel
conformal fuel tanks