Vapour lock is a. complete or partial stoppage of fuel supply due to vaporization of the fuel b. locking of carburetor due to high vapor pressure c. excess fuel supply to the engine d. supply of liquid fuel to the engine

Vapour lock is  a. complete or partial stoppage of fuel supply due to vaporization of the fuel  b. locking of carburetor due to high vapor pressure  c. excess fuel supply to the engine  d. supply of liquid fuel to the engine  
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ANSWER  a. complete or partial stoppage of fuel supply due to vaporization of the fuel
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