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  • Question
  • Mesons are found in


  • Options
  • A. Laser beam
  • B. X-rays
  • C. Gamma rays
  • D. Cosmic rays

  • Correct Answer
  • Cosmic rays 


  • General Science problems


    Search Results


    • 1. One fathom is equal to

    • Options
    • A. 6 feet
    • B. 6 meters
    • C. 60 feet
    • D. 100 cm
    • Discuss
    • 2. Electric current is measure by

    • Options
    • A. commutator
    • B. anemometer
    • C. ammeter
    • D. voltmeter
    • Discuss
    • 3. Fathom is the unit of

    • Options
    • A. sound
    • B. depth
    • C. frequency
    • D. distance
    • Discuss
    • 4. One kilometre is equal to how many miles?

    • Options
    • A. 0.84
    • B. 0.5
    • C. 1.6
    • D. 0.62
    • Discuss
    • 5. Kilowatt is a unit to measure

    • Options
    • A. work
    • B. power
    • C. electricity
    • D. current
    • Discuss
    • 6. Which of the following is used as a moderator in nuclear reactor?

    • Options
    • A. Thorium
    • B. Graphite
    • C. Radium
    • D. Ordinary water
    • Discuss
    • 7. Nuclear fission is caused by the impact of

    • Options
    • A. neutron
    • B. proton
    • C. deuteron
    • D. electron
    • Discuss
    • 8. Atoms of an element differ from those of all other elements in

    • Options
    • A. atomic number and electronic configuration
    • B. number of neutrons and number of valence electrons
    • C. atomic number and number of valence electrons
    • D. number of neutrons and electronic configuration
    • Discuss
    • 9. Which radioactive pollutant has recently drawn to public, due to its occurrence in the building material?

    • Options
    • A. Thorium
    • B. Radium
    • C. Plutonium
    • D. Radan
    • Discuss
    • 10. Which among the following is a positively charged particle emitted by a radioactive element?

    • Options
    • A. Beta ray
    • B. Alpha ray
    • C. Cathode ray
    • D. Gamma ray
    • Discuss


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