Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

a place where salt & fresh water mix in shallow waters

  1. estuaries

  2. community

  3. ecosystem

  4. everglades
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Estuaries are coastal areas where fresh water from rivers and streams mixes with salt water from the ocean. These transition zones are influenced by tides but are protected from waves, currents, and storms. They create unique ecosystems that support diverse plant and animal life adapted to changing salinity levels.

Multiple choice general knowledge science & technology

From which plant is morphine obtained?

  1. Sycamore

  2. Opium poppy

  3. Willow

  4. Cottonwood
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Morphine is an opiate alkaloid extracted from the opium poppy (Papaver somniferum). The plant's seed pods contain latex rich in morphine, codeine, and other alkaloids. This extraction process has been used for centuries for medicinal purposes.

Multiple choice general knowledge science & technology

What type of clock was first introduced by the US National Bureau of Standards in 1949?

  1. Atomic Clock

  2. Big Ben Alarm Clock

  3. Quartz clock

  4. Twelve O'Clock
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The first atomic clock, an ammonia maser, was developed at the US National Bureau of Standards (now NIST) and introduced in 1949. This groundbreaking invention revolutionized timekeeping by using atomic vibrations as the frequency standard, providing unprecedented accuracy.

Multiple choice general knowledge science & technology

Who invented the bifocal lens?

  1. J J Thomson

  2. Ben Franklin

  3. Benjamin Franklin

  4. Rene Theoplhie
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Benjamin Franklin invented bifocal lenses around 1784 to address his own vision problems. The design allowed for both near and distance vision correction in a single pair of glasses by placing different lens powers in the upper and lower halves of the frame.

Multiple choice general knowledge science & technology

Who discovered oxygen?

  1. Joseph Priestly

  2. Joseph Methew

  3. John Fernandis

  4. Rene Theoplhie
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Joseph Priestley discovered oxygen in 1774 through his experiments with mercuric oxide. Although Carl Wilhelm Scheele had likely produced oxygen earlier (1771-1772), Priestley published his findings first and is widely credited as one of oxygen's discoverers, alongside Scheele and Lavoisier who named it.

Multiple choice general knowledge science & technology

Who invented the stethoscope and when?

  1. Joseph Methew. In 1817

  2. Joseph Methew. In 1816

  3. Rene Theoplhie Laennec. In 1817

  4. Rene Theoplhie Laennec. In 1816
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rene Theophile Hyacinthe Laennec invented the stethoscope in 1816. He was a French physician who created this device to avoid the impropriety of placing his ear directly on women's chests to hear their heartbeats. Joseph Methew is not a historical figure associated with this invention.