Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

jeans by:

  1. Leonard Goodall

  2. Jacob Davis

  3. George Heilmeier

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

Jacob Davis, a tailor, collaborated with Levi Strauss to invent blue jeans in 1873, patenting the process of using copper rivets to strengthen stress points in pants. This invention created the durable work pants that became iconic denim jeans.

Multiple choice general knowledge science & technology

Which one of the following is known as "Biological Blueprint"?

  1. Mitochondria

  2. RNA

  3. Cell

  4. DNA
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

DNA contains the complete genetic instructions for an organism's development and functioning, earning it the 'biological blueprint' designation. RNA carries protein blueprints, cells are basic structural units, and mitochondria produce energy - none serve as the master blueprint.

Multiple choice general knowledge science & technology

airplane by:

  1. Wilbur & Orville Wright

  2. Valdemar Poulsen

  3. Fritz Pfleumer

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

The Wright brothers (Wilbur & Orville) made the first controlled, sustained powered aircraft flight in 1903. Poulsen invented the telegraphone (magnetic recording), Pfleumer developed magnetic tape, and Dickson created Band-Aids.

Multiple choice general knowledge science & technology

atomic bomb by:

  1. Charles Richard Drew

  2. Alessandro Volta

  3. Robert Oppenheimer

  4. Louis Braille
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

J. Robert Oppenheimer led the Manhattan Project as scientific director, overseeing development of the first atomic bombs during WWII. Drew pioneered blood plasma storage, Volta invented the electric battery, and Braille developed the tactile reading system.

Multiple choice general knowledge science & technology

The study of distribution and abundance of living organisms, and the interactions between organisms and their environment is known as __.

  1. Ecology

  2. Biology

  3. Mythology

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

Ecology specifically studies the relationships between organisms and their environment, including distribution and abundance patterns. Biology is broader, mythology studies legends, and histology examines tissues.

Multiple choice general knowledge science & technology

Acids

  1. produce H+ (or hydronium ion H3O+) in water

  2. taste sour

  3. neutralize bases

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Acids exhibit all these properties: they produce H+ or H3O+ ions in water, taste sour, and neutralize bases through acid-base reactions.

Multiple choice general knowledge science & technology

A weak acid

  1. does not dissolve in water

  2. ionizes slightly in water to give molecules and a few ions

  3. ionizes 100% in water to give all ions

  4. dissolves in water only as molecules
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Weak acids partially dissociate in water, establishing equilibrium between mostly undissociated molecules and few ions. Strong acids (like HCl) ionize completely.