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  • Question
  • When an electric bulb breaks , there is an explosive sound. That is due to


  • Options
  • A. the chemical reaction between the gases inside the bulb
  • B. the compressed gases inside rushing out suddenly
  • C. the air outside rushing in to fill the vacuum inside the bulb
  • D. None of these

  • Correct Answer
  • the air outside rushing in to fill the vacuum inside the bulb 

    Explanation

    The inside of the bulb being a vacuum, the outside air rushes in when the bulb is broken. The vibrations of the rushing air molecules produce the sound.


  • More questions

    • 1. The powers to legislate with respect to any matter not enumerated in any of the three lists are mentioned as residuary powers. Which of the following is empowered to determine finally as to whether or not a particular matter falls in this category


    • Options
    • A. Lok Sabha
    • B. Judiciary
    • C. Rajya Sabha
    • D. Parliament
    • Discuss
    • 2. Light travels at the fastest speed in

    • Options
    • A. glass
    • B. water
    • C. hydrogen
    • D. vacuum
    • Discuss
    • 3. Devaluation of currency will be more beneficial if


    • Options
    • A. prices of domestic goods remain constant
    • B. prices of exports remain constant
    • C. prices of imports remains constant
    • D. prices of exports rise proportionately
    • Discuss
    • 4. The first hand glider was designed by...?

    • Options
    • A. Leonardo DaVinci
    • B. The Wright brothers
    • C. Francis Rogallo
    • D. Galileo
    • Discuss
    • 5. Which of the following dances is a solo dance?

    • Options
    • A. Ottan Thullal
    • B. Kuchipudi
    • C. Yakshagana
    • D. Odissi
    • Discuss
    • 6. Eritrea, which became the 182nd member of the UN in 1993, is in the continent of

    • Options
    • A. Asia
    • B. Africa
    • C. Europe
    • D. Australia
    • Discuss
    • 7. The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is

    • Options
    • A. cineole
    • B. engenol
    • C. geraniol
    • D. limonene
    • Discuss
    • 8. In which decade was the telegraph invented?

    • Options
    • A. 1810s
    • B. 1840s
    • C. 1870s
    • D. 1890s
    • Discuss
    • 9. The speed of your net access is defined in terms of...

    • Options
    • A. RAM
    • B. MHz
    • C. Kbps
    • D. Megabytes
    • Discuss
    • 10. The famous character 'Pickwick' was created by

    • Options
    • A. Steven Spielberg
    • B. Leo Tolstoy
    • C. Walt Disney
    • D. Charles dickens
    • Discuss


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