HomeTestsSearchRankProfile
mediumMCQSSC CGL2026General Science
1 attempts0% success rate1 mark

Who invented the Vacuum Flask?

  1. A
    Charles Babbage
  2. B
    Alexander Fleming
  3. C
    Gregory Pincus
  4. D
    James Dewar

Solution & Step-by-step Explanation

The vacuum flask (also known as the Dewar flask) was invented by the Scottish physicist and chemist Sir James Dewar in 1892. He designed it to keep liquid gases at extremely low temperatures by minimizing heat transfer through conduction, convection, and radiation.

Practice this question

Try it yourself before checking the explanation above.

Who invented the Vacuum Flask?
A
Charles Babbage
B
Alexander Fleming
C
Gregory Pincus
D
James Dewar

Share This Question

inventionsphysicsinstruments

Related Questions

easyMCQ

Which one of the following statements is true?

easyMCQ

Which of the following statements is not correct?

easyMCQ

Which one of the following statements is correct?

easyMCQ

The product formed by the reaction of an aldehyde with a primary amine is:

easyMCQ

Which part of the tobacco plant is infected by Meloidogyne incognita?

easyMCQ

The term ecosystem was coined by:

Ready for a Full Test?

Practice with timed mock tests and track your performance across General Science.

Browse TestsLeaderboard

Discussion