Tag: science & technology

Questions Related to science & technology

Multiple choice general knowledge science & technology
  1. Gasparo Berti

  2. Evangelista Torricelli

  3. Rene Descartes

  4. Lucien Vidie

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Evangelista Torricelli, an Italian physicist and mathematician, is credited with inventing the mercury barometer in 1643. He used it to demonstrate atmospheric pressure. Descartes and Vidie made later contributions to pressure measurement but did not invent the original device.

Multiple choice general knowledge science & technology
  1. Benjamin Franklin

  2. Heinrich Lenz

  3. Thomas Young

  4. Thomas Alva Edison

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Benjamin Franklin invented bifocal lenses around 1784. He created them to avoid switching between two pairs of glasses - one for reading and one for distance vision. The design has two distinct optical powers in each lens.

Multiple choice general knowledge science & technology
  1. Henry W. Wynne

  2. George Safford Parker

  3. Lewis E. Waterman

  4. Theodor Kovacs

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lewis E. Waterman invented the practical fountain pen in 1884 after losing a sale due to a leaking pen. His key innovation was the feed system that regulated ink flow using air pressure and capillary action, preventing leaks and ensuring consistent writing.

Multiple choice general knowledge science & technology
  1. Thomas Alva Edison

  2. Denis Papin

  3. Linda Hawkins

  4. Percy Spencer

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Denis Papin, a French physicist, invented the pressure cooker in 1679. He called it the 'steam digester' and used it to soften bones and extract nutrients. The high-pressure environment allowed water to boil at higher temperatures, cooking food faster.

Multiple choice general knowledge science & technology
  1. John Browning

  2. Richard Gatling

  3. Anton Kalashnikov

  4. Paul von Mauser

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Paul Mauser (with his brother Wilhelm) developed the Mauser rifle, one of the most famous bolt-action rifle designs in history. The Mauser Model 98 and its variants were used by militaries worldwide and set the standard for bolt-action rifles. The muzzle-loading predecessors were developed much earlier by various gunsmiths.

Multiple choice general knowledge science & technology
  1. The space russia

  2. The uno 45

  3. the supernova 45

  4. Russian Luna 2

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Luna 2, launched by the Soviet Union in September 1959, was the first spacecraft to reach the Moon's surface. It intentionally crashed into the Moon near the Palus Putredinis region, proving that spacecraft could successfully travel to another celestial body and impact its surface.