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  • Question
  • Which one of the following types of waves are used in a night vision apparatus?


  • Options
  • A. Radio waves
  • B. Microwaves
  • C. Infra-red waves
  • D. None of the above

  • Correct Answer
  • Infra-red waves 


  • General Science problems


    Search Results


    • 1. The Ghatampur thermal power plant recently approved by Cabinet is to be setup in

    • Options
    • A. Rajasthan
    • B. Uttar Pradesh
    • C. Karnataka
    • D. Madhya Pradesh
    • Discuss
    • 2. What is Gol Gumbadh ?

    • Options
    • A. Mausoleum of Hyder Ali
    • B. Mausoleum of Aurangazeb
    • C. Mausoleum of Chand Bibi
    • D. Mausoleum of Mohammed Adil Shah
    • Discuss
    • 3. ?Sun Temple? is situated in the state of __________

    • Options
    • A. Rajasthan
    • B. Andhra Pradesh
    • C. Odisha
    • D. Tamil Nadu
    • Discuss
    • 4. Who among the following Sikh Gurus had laid the foundation of Amritsar?

    • Options
    • A. Guru Amar Das
    • B. Guru Ram Das
    • C. Guru Arjan Dev
    • D. Guru Har Govind
    • Discuss
    • 5. Which of the following is not true about Ajanta Caves?

    • Options
    • A. They are in Maharashtra
    • B. They are decorated with Buddhist Art
    • C. They depict the techniques used in Ancient India
    • D. They do not contain paintings of flora and fauna
    • Discuss
    • 6. The blue colour of the clear sky is due to

    • Options
    • A. Diffraction of light
    • B. Dispersion of light
    • C. Reflection of light
    • D. Refraction of light
    • Discuss
    • 7. As you go down into a well, your weight

    • Options
    • A. increases slightly
    • B. decreases slightly
    • C. remains exactly the same
    • D. None of the above
    • Discuss
    • 8. The weight of an object will be minimum when it is placed at ?

    • Options
    • A. The North Pole
    • B. The South Pole
    • C. The Equator
    • D. The center of the Earth
    • Discuss
    • 9. What does airbag, used for safety of car driver, contain?

    • Options
    • A. Sodium bicarbonate
    • B. Sodium azide
    • C. Sodium nitrite
    • D. Sodium peroxide
    • Discuss
    • 10. In fireworks, the green flame is produced because of

    • Options
    • A. Sodium
    • B. Potassium
    • C. Barium
    • D. Mercury
    • Discuss


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