SSC General Science & Technology Sample Paper NCERT Sample Paper-4

  • question_answer
    Which of the following statements is/are correct?
    1. Barcode was first used on a chewing gum packet in Ohio market.
    2. Barcode is the distinctive black and white stripes that provide details relating to an object your purchase.

    A)  Only 1 

    B)  Only 2

    C)  1 and 2

    D)  None of these

    Correct Answer: C

    Solution :

    [c] A barcode is an optical machine-readable representation of data relating to the object, to which it is attached. Barcodes originally were scanned by Special optical scanners called barcode readers. Later, scanners and interpretive software became available on devices including desktop printers and smart phones.

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