Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

What is Big Crunch?

  1. All the matter and space-time in the universe collapse into a dimensionless singularity

  2. A shortage or reduction of the resources in a BIG Project

  3. Galaxies moving away from each other and ultimately move faster than light to vanish forever

  4. A Big crushing noise
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Big Crunch is one hypothetical fate of the universe where expansion eventually reverses and all matter and space-time collapse back into a dimensionless singularity - essentially the reverse of the Big Bang. This would occur if dark energy is insufficient to overcome gravitational attraction.

Multiple choice general knowledge science & technology

“If anybody says he can think about quantum physics without getting giddy, that only shows he has not understood the first thing about them.” Who said these famous lines?

  1. Niels Bohr

  2. Hugh Everett

  3. John Wheeler

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

Niels Bohr, one of the founding fathers of quantum mechanics, famously made this statement emphasizing how quantum physics fundamentally challenges our classical intuition. The quote reflects the counterintuitive nature of quantum phenomena like superposition and uncertainty.

Multiple choice general knowledge science & technology

What is Inflation?

  1. the theorized exponential expansion of the universe at the end of the grand unification epoch

  2. the theorized exponential contraction of the universe at the end of the grand unification epoch

  3. The rising price of everything leading to diminishing pockets

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Inflation is the theorized exponential expansion of space that occurred at the end of the grand unification epoch, approximately 10^-36 to 10^-32 seconds after the Big Bang. This rapid expansion explains the universe's large-scale uniformity and structure.

Multiple choice general knowledge science & technology

“If anybody says he can think about quantum physics without getting giddy, that only shows he has not understood the first thing about them.” Who said these famous lines?

  1. Niels Bohr

  2. Hugh Everett

  3. John Wheeler

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

Niels Bohr, one of the founding fathers of quantum mechanics, famously made this statement emphasizing how quantum physics fundamentally challenges our classical intuition. The quote reflects the counterintuitive nature of quantum phenomena like superposition and uncertainty.

Multiple choice general knowledge science & technology

If somehow we pull the earth from solar system to some other isolated place in the universe, the gravitational field will

  1. Still be the same as gravitational field is same across the universe

  2. Reduce to zero as Sun is responsible for the gravity

  3. It will not be possible to do that

  4. earth will collapse under its own gravity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Earth has its own gravitational field due to its mass, independent of the Sun. The Sun's gravity keeps Earth in orbit but doesn't create Earth's surface gravity. If Earth were moved elsewhere in space, it would still retain its gravitational field because it still has mass. Option B is wrong because Earth's gravity comes from Earth itself, not the Sun.

Multiple choice general knowledge science & technology

What is Schrodinger's Cat?

  1. The cat of famous scientist schrodinger who became famous after being sold for 1 Million dollars after his death in 1950

  2. The system stops being the superposition of two states and becomes either one when the observation takes place.

  3. The cat particle in quantum mechanics which was discovered by Schrodinger

  4. The superstition involving cats and quantum mechanics
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Schrodinger's Cat is a famous thought experiment in quantum mechanics that illustrates the concept of superposition. A quantum system can exist in multiple states simultaneously until it is observed or measured, at which point it 'collapses' into one definite state. The cat in the box represents a quantum system that is both alive and dead until observed. Option A is nonsensical and not related to quantum mechanics.

Multiple choice general knowledge science & technology

What is Big Crunch?

  1. All the matter and space-time in the universe collapse into a dimensionless singularity

  2. A shortage or reduction of the resources in a BIG Project

  3. Galaxies moving away from each other and ultimately move faster than light to vanish forever

  4. A Big crushing noise
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Big Crunch is one of the possible scenarios for the ultimate fate of the universe, where the expansion of the universe eventually reverses and all matter and spacetime collapse back into a singularity - essentially the reverse of the Big Bang. This would happen if the density of the universe is high enough for gravity to eventually overcome expansion. Options B and C refer to other concepts entirely.

Multiple choice general knowledge science & technology

Which Aero Major was set up on 1916 as : "PACIFIC AERO PRODUCTS COMPNAY"

  1. Air India

  2. Lufthansa

  3. Boeing

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

Boeing was founded in 1916 as 'Pacific Aero Products Company' by William Boeing, later renamed Boeing Airplane Company in 1917. It became a major aerospace manufacturer. Lufthansa was founded in 1926, Air India in 1932, and MIG is a Russian aerospace corporation ( Mikoyan-Gurevich) established in 1939.