Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

Which script(of indian language) is base for many south-east asian language?

  1. Tamil

  2. Bengali

  3. Sanskrit

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

The Grantha script, which evolved from the Brahmi script, was indeed influential in the development of several Southeast Asian scripts. The Pallava script (a variant of Grantha) served as the basis for scripts like Thai, Lao, Khmer, and Burmese. While Tamil and Sanskrit were culturally influential, the Grantha/Pallava script was the direct scriptural ancestor for many Southeast Asian writing systems.

Multiple choice general knowledge science & technology

The universe is expanding at the same rate in each direction. Where is the centre if The Universe

  1. The sun

  2. It has no center

  3. The Milky way

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

The universe has no center because expansion happens everywhere simultaneously. The Big Bang occurred at all points in space, not from a single location. The Milky Way, Sun, and Earth are just one small part of the universe, not its center.

Multiple choice general knowledge science & technology

Besides ordinary matter, The Universe contains a lot of "Dark matter", which is an unknown substance. What fraction of the mass of The Universe is ordinary matter, like hydrogen and Helium

  1. 70-80 %

  2. 30-40 %

  3. 2-3 %

  4. 0-0.2 %
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ordinary (baryonic) matter makes up about 5% of the universe's total mass-energy content, with dark matter at ~27% and dark energy at ~68%. The 2-3% figure in option C is the closest approximation to the actual ~5% baryonic matter fraction.

Multiple choice general knowledge science & technology

The expansion of The Universe was discovered by observing that all galaxies are moving away from us. Who made this discovery

  1. Edwin Hubble

  2. Albert Einstein

  3. Fritz Zwicky

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

Edwin Hubble discovered cosmic expansion in 1929 by observing that distant galaxies are moving away from us, with more distant galaxies receding faster (Hubble's Law). This was the first evidence that the universe is expanding.

Multiple choice general knowledge science & technology

Quasars(Quasi-stellar objects) are brightest objects in The Universe Where does thier energy come from ?

  1. Nuclear burning

  2. Matter falling into a black hole

  3. Collisions of starts

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

Quasars are powered by supermassive black holes at galaxy centers. As matter falls into the black hole, it forms an accretion disk that heats up and releases enormous amounts of energy before crossing the event horizon.

Multiple choice general knowledge science & technology

The SDSS discovered the most distant quasar. How old was The Universe when the light left that quasar

  1. 100 Million years

  2. 500 Million years

  3. 2 Billion years

  4. 10 Billion years
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The SDSS has discovered quasars from when the universe was about 2-3 billion years old. The most distant quasars (z > 7) are from even earlier, but SDSS discoveries include many from the 2 billion year epoch.