SCERT D. El. Ed - General Knowledge / General Science MCQs

SCERT D. El. Ed 2026 – General Knowledge MCQs

SCERT D. El. Ed 2026 – General Knowledge MCQs

Inventions

Q1. Who discovered X-rays?
  • A. Wilhelm Roentgen
  • B. Marie Curie
  • C. Henri Becquerel
  • D. Albert Einstein
Correct Answer: A. Wilhelm Roentgen
Explanation: Wilhelm Conrad Roentgen discovered X-rays in 1895.
Q2. Who invented dynamite?
  • A. Alfred Nobel
  • B. Thomas Edison
  • C. James Watt
  • D. Michael Faraday
Correct Answer: A. Alfred Nobel
Explanation: Alfred Nobel invented dynamite in 1867.
Q3. Who invented the electric light bulb?
  • A. Thomas Edison
  • B. Nikola Tesla
  • C. Benjamin Franklin
  • D. Michael Faraday
Correct Answer: A. Thomas Edison
Explanation: Thomas Edison invented the practical incandescent electric light bulb in 1879.
Q4. Who invented the radio?
  • A. Guglielmo Marconi
  • B. Alexander Graham Bell
  • C. Thomas Edison
  • D. J.L. Baird
Correct Answer: A. Guglielmo Marconi
Explanation: Guglielmo Marconi is credited with the invention of the radio.
Q5. Who invented the television?
  • A. John Logie Baird
  • B. Marconi
  • C. Edison
  • D. Galileo
Correct Answer: A. John Logie Baird
Explanation: John Logie Baird demonstrated the first working television in 1926.
Q6. Who invented the steam engine?
  • A. James Watt
  • B. Thomas Newcomen
  • C. George Stephenson
  • D. Henry Ford
Correct Answer: A. James Watt
Explanation: James Watt improved the steam engine in 1769, making it commercially viable.
Q7. Who discovered the law of gravitation?
  • A. Isaac Newton
  • B. Albert Einstein
  • C. Galileo Galilei
  • D. Stephen Hawking
Correct Answer: A. Isaac Newton
Explanation: Sir Isaac Newton formulated the law of universal gravitation in 1687.
Q8. Who discovered radium?
  • A. Marie and Pierre Curie
  • B. Henri Becquerel
  • C. Ernest Rutherford
  • D. Niels Bohr
Correct Answer: A. Marie and Pierre Curie
Explanation: Marie and Pierre Curie discovered radium in 1898.
Q9. Who invented the World Wide Web?
  • A. Tim Berners-Lee
  • B. Bill Gates
  • C. Steve Jobs
  • D. Vint Cerf
Correct Answer: A. Tim Berners-Lee
Explanation: Tim Berners-Lee invented the World Wide Web in 1989.
Q10. Who invented the printing press?
  • A. Johannes Gutenberg
  • B. William Caxton
  • C. Benjamin Franklin
  • D. James Watt
Correct Answer: A. Johannes Gutenberg
Explanation: Johannes Gutenberg invented the movable-type printing press around 1440.
Q11. Who invented the airplane?
  • A. Wright Brothers
  • B. Henry Ford
  • C. Charles Lindbergh
  • D. Howard Hughes
Correct Answer: A. Wright Brothers
Explanation: The Wright Brothers made the first powered airplane flight in 1903.
Q12. Who discovered the electron?
  • A. J.J. Thomson
  • B. Ernest Rutherford
  • C. James Chadwick
  • D. Niels Bohr
Correct Answer: A. J.J. Thomson
Explanation: J.J. Thomson discovered the electron in 1897.
Q13. Who developed the theory of relativity?
  • A. Albert Einstein
  • B. Isaac Newton
  • C. Max Planck
  • D. Niels Bohr
Correct Answer: A. Albert Einstein
Explanation: Albert Einstein proposed the theory of relativity in 1905 (special) and 1915 (general).
Q14. Who invented the computer mouse?
  • A. Douglas Engelbart
  • B. Bill Gates
  • C. Steve Jobs
  • D. Charles Babbage
Correct Answer: A. Douglas Engelbart
Explanation: Douglas Engelbart invented the computer mouse in 1964.
Q15. Edward Jenner is famous for inventing the vaccine against which disease?
  • A. Smallpox
  • B. Polio
  • C. Tuberculosis
  • D. Cholera
Correct Answer: A. Smallpox
Explanation: Edward Jenner developed the smallpox vaccine in 1796.
Q16. Who is considered the father of the modern computer?
  • A. Charles Babbage
  • B. Alan Turing
  • C. Bill Gates
  • D. Tim Berners-Lee
Correct Answer: A. Charles Babbage
Explanation: Charles Babbage is known as the father of the modern computer for designing the Analytical Engine.
Q17. Who invented the telephone?
  • A. Alexander Graham Bell
  • B. Thomas Edison
  • C. Nikola Tesla
  • D. Guglielmo Marconi
Correct Answer: A. Alexander Graham Bell
Explanation: Alexander Graham Bell patented the first practical telephone design in 1876.
Q18. Who discovered penicillin?
  • A. Alexander Fleming
  • B. Louis Pasteur
  • C. Edward Jenner
  • D. Robert Koch
Correct Answer: A. Alexander Fleming
Explanation: Scottish scientist Alexander Fleming discovered the antibiotic penicillin properties in 1928.

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