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General Knowledge :: General Science

  1. Which of the following rays are more penetrating?

  2. A.
    Beta rays
    B.
    Alpha rays
    C.
    Gamma rays
    D.
    X-rays

  3. How many colours the sunlight spectrum has?

  4. A.
    Three
    B.
    Seven
    C.
    Four
    D.
    Five