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Question of the day
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Question of the Day (03-May-19)

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The question below consists of a paragraph in which the first and last sentences are identified. Choose the option that has the most logical order of the intermediate sentences.
  1. In 2006 a possible sighting was reported of a predicted but previously unobserved fundamental particle called the axion.
  2. The theory describes the binding of the elementary particles called quarks in protons and neutrons.
  3. The sighting was based on an experiment by Emilio Zavattini and colleagues in the PVLAS (vacuum polarization with a laser) collaboration at the Italian Institute of Nuclear Physics, Trieste.
  4. The axion was believed to have no spin, no charge, and a very small mass, which would make it very difficult to detect.
  5. They used a magnetic field to rotate the polarization of light in a vacuum.
  6. The existence of the particle was postulated in 1977 to explain an anomalous result of the field equations of quantum chromodynamics.
  7. The result could be interpreted as a manifestation of the axion, but the properties of the particle appeared to be far different from those that had been originally postulated.

OPTIONS
 
 1)DECFB
 2)FBDCE
 3)CEDBF
 4)CEBDF
 5)DCFBE

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