SSC Ecology And Environment Sample Paper NCERT Sample Paper-6

  • question_answer
    Burning of plastics releases.

    A)  CFC                

    B)  \[S{{O}_{2}}\]

    C)  benzopyrene     

    D)  PCB

    Correct Answer: D

    Solution :

    [d] Polychlorinated Biphenyls (PCBs) belong to a broad family of man-made organic chemicals known as chlorinated hydrocarbons. Due to their non-flammability, chemical stability, high boiling point, and electrical insulating properties, PCBs were used in hundreds of industrial and commercial applications including electrical, heat transfer, and hydraulic equipment; as plasticizers in paints, plastics, and rubber products; in pigments, dyes, and carbonless copy paper; and many other industrial applications.

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