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  1. A stoichiometric air-fuel ratio is

    2. A.

     Chemically correct mixture
    B.

     Lean mixture
    C.

     Rich mixture for idling
    D.

     Rich mixture for over loads

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    Answer : Option A

    Explanation :

    A stoichiometric air-fuel ratio is Chemically correct mixture. Air–fuel ratio (AFR) is the mass ratio of air to a solid, liquid, or gaseous fuel present in a combustion process. If exactly enough air is provided to completely burn all of the fuel, the ratio is known as the stoichiometric mixture, often abbreviated to stoich.

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