General Science

  • Who discovered X-rays?

    • Thomas Edison
    • Marie Curie
    • Robert Burners
    • Wilhelm Conrad Röntgen ✅

    Wilhelm Conrad Röntgen, a German physicist, discovered X-rays on 8 November 1895 while conducting experiments with cathode rays.
    1. He named the newly discovered radiation X-rays because its nature was initially unknown.
    2. He received the first-ever Nobel Prize in Physics in 1901 for this discovery.
    3. X-rays are widely used in medical imaging to examine bones and internal body structures.

  • Solar cells are mainly made of which material?

    • Copper
    • Silicon ✅
    • Aluminum
    • Iron

  • Which of the following is a non-renewable energy source?

    • Wind Energy
    • Solar Energy
    • Fossil Fuels ✅
    • Hydropower

  • The scientist's _____ approach helped to conduct the experiment meticulously.

    • Erratic
    • Random
    • Impulsive
    • Methodical

  • Who said microbes are animalcule?

    • Darwin
    • Antony van Leeuwenhoek
    • Mendel
    • Louis Pasteur

  • The SI unit of "pressure" is:

    • Pascal (Pa)
    • Joule (J)
    • Kelvin (k)
    • Candela (cd)

  • The least count of Vernier Caliper is:

    • 0.1 mm
    • 1 mm
    • 10 mm
    • 100 mm

  • Who introduced the Law of Gravity?

    • Galileo
    • Albert Einstein
    • Isaac Newton
    • None of these