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  1. The chief source of naphthalene is

    2. A.

     Coal-tar
    B.

     Diesel
    C.

     Charcoal
    D.

     Camphor

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    Answer : Option A

    Explanation :

    Most naphthalene is derived from coal tar. From the 1960s until the 1990s, significant amounts of naphthalene were also produced from heavy petroleum fractions during petroleum refining, but today petroleum-derived naphthalene represents only a minor component of naphthalene production.

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