Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

What country is planning a floating wind farm off its shores?

  1. Norway

  2. Japan

  3. Brazil

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

Norway has been a pioneer in developing floating wind farm technology, particularly in the North Sea. The Hywind project, developed by Statoil (now Equinor), was one of the world's first full-scale floating wind turbines. Japan has also explored floating wind farms, but Norway was the earliest and most prominent in planning and implementing this technology.

Multiple choice general knowledge science & technology

One company is experimenting with so-called "Oil 2.0," crude oil made from the droppings of what kind of organism?

  1. algae

  2. yeast

  3. insects

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

Several companies, including LS9 (later acquired by Renewable Energy Group), have experimented with producing synthetic crude oil, dubbed 'Oil 2.0,' using genetically modified yeast. The yeast excretes hydrocarbons that can be refined into petroleum-like fuel. Algae biofuel is a different approach that uses algae directly rather than yeast fermentation.

Multiple choice general knowledge science & technology

One new alternative energy idea involves piezoelectricity. What's that?

  1. the electricity generated by your exhaled carbon dioxide in certain weather conditions

  2. the electricity that's generated when a material changes shape or is put under pressure

  3. the electricity generated when wind blows through pine trees

  4. the electricity generated from anti-matter
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Piezoelectricity is the electric charge that accumulates in certain solid materials (like crystals, ceramics, and even some biological matter) in response to mechanical stress. When these materials are compressed, stretched, or deformed, they generate an electric voltage. This principle is used in various applications from lighters to sensors.

Multiple choice general knowledge science & technology

What's biogas digestion?

  1. when bird excrement can be processed into energy

  2. when the methane released by cow flatulence can be harnessed into energy

  3. when the methane released by decaying waste can be turned into electricity

  4. None among the given options
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Biogas digestion, also called anaerobic digestion, is a process where microorganisms break down biodegradable material (like food waste, agricultural waste, or manure) in the absence of oxygen. This produces methane-rich biogas that can be burned for electricity or heat. While cow methane is captured (not from flatulence directly but from manure management), option C correctly describes the general process.

Multiple choice general knowledge science & technology

E=mc^2 is the expression explained by

  1. thomas alwa edison

  2. albert einstein

  3. issac newton

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

E = mc^2 is the famous mass-energy equivalence formula derived by Albert Einstein in 1905 as part of his special theory of relativity. It shows that energy (E) equals mass (m) times the speed of light squared (c^2).

Multiple choice general knowledge science & technology

What is the only mammal with four knees?

  1. Cat

  2. Dog

  3. Elephant

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

The elephant is the only mammal with four knees. This is because elephants have unique front leg anatomy - what appear to be the front 'knees' are actually wrist joints that bend backward, giving the appearance of four knee joints. Other mammals like cats, dogs, and cows only have two true knee joints on their hind legs.