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Railways PYQCBT 1 2016

RRB NTPC · Question 18

________ is one of the states of matter obtained by cooling a gas of very low density to extremely low temperatures. A. Gas B. Plasma C. Bose-Einstein Condensate (BEC) D. Plasma Condensate

  1. C

  2. B

  3. A

  4. D

Show answer & explanation

Answer: (A) C

Explanation

A Bose–Einstein Condensate forms when a very dilute gas of bosons is cooled to near absolute zero, so that most atoms occupy the lowest quantum state and behave as one 'super-atom'. It was predicted by Bose and Einstein and first made in 1995.