Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

The presence of a black hole cannot be seen visually because even light cannot escape from its strong gravitational pull.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This statement is true. Black holes have gravitational fields so intense that nothing, not even electromagnetic radiation like light, can escape once it crosses the event horizon. This is why black holes are invisible - we can only detect them through their effects on nearby matter and gravitational influence.

Multiple choice general knowledge science & technology

when an object's internal pressure is insufficient to resist the object's own gravity, what will happen?

  1. Nova

  2. Super Nova

  3. Gravitational Collapse

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

When an object's internal pressure cannot resist its own gravity, it undergoes gravitational collapse. This is the fundamental process behind star formation and can lead to supernovae or black hole formation. A nova is a surface explosion on a white dwarf, fission is nuclear splitting, and a supernova is a stellar explosion - none describe the collapse process itself.

Multiple choice general knowledge science & technology

Which particle is said to be the source of mass called the God's Particle?

  1. Neutrino Particle

  2. Higgs Boson

  3. Anti - Matter

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

The Higgs boson is nicknamed the 'God Particle' in popular media because its discovery confirmed the mechanism that gives fundamental particles their mass. It was discovered at CERN in 2012. Neutrinos are nearly massless particles, antimatter is composed of antiparticles, and positrons are antimatter electrons - none are the source of mass.

Multiple choice general knowledge science & technology

A boat has a ladder that has six rungs; each rung is one foot apart. The bottom rung is one foot from the water. The tide rises at 12 inches every 15 minutes. High tide peaks in one hour. When the tide is at its highest, how many rungs are under water?

  1. 6

  2. 4

  3. three

  4. 0
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The boat rises with the tide. Since the ladder is attached to the boat, all rungs maintain their position relative to the water. If the bottom rung was 1 foot from water initially, it remains 1 foot from water at high tide.

Multiple choice general knowledge science & technology

A woman shoots her husband. Then she holds him under water for over 5 minutes. Finally, she hangs him. But 5 minutes later they both go out and enjoy a wonderful dinner together. How can this be?

  1. Both are died

  2. She is a photographer

  3. both are wrong

  4. both are right
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The answer relies on wordplay. 'Shoots' refers to taking a photograph, 'holds under water' is developing film in chemicals, and 'hangs' means hanging the photo to dry. A photographer and her subject (husband) can then go to dinner together.