2. Sample Papers
  3. 10th Class
  4. Social Science

10th Class Social Science Sample Paper Social Studies - Sample Test Paper-3

  • question_answer
    STD refers to:

    A)  Speed Telephone Dialing

    B)  Special Telephone Dialing

    C)  Super Trunk Dialing

    D)  Subscriber Trunk Dialing

    E)  None of these

    Correct Answer: D

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