Answer:
Carburetors are responsible for mixing air with fuel to obtain the correct ratio for a combustible vehicle's engine. The carburetor also helps to control the engine's speed when the gas pedal is pressed.
Or
Carburetor: is a device which is used in automobiles, with spark ignition engines, for the purpose of fuel metering, i.e. to mix the appropriate amount of fuel with the incoming air which is to be supplied to the engine cylinders.