Q. Consider the following statements about Quarks:
1. Quarks are elementary particles that come in 6 ‘flavours’: up, down, charm, strange, top, and bottom.
2. They usually combine together in groups of twos and threes to form hadrons such as the protons and Neutrons.
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

Explanation: About Quarks, Pentaquark and Tetraquark

  • Quarks are elementary particles that come in 6 ‘flavours’: up, down, charm, strange, top, and bottom.
  • They usually combine together in groups of twos and threes to form hadrons such as the protons and neutrons that make up atomic nuclei.
  • But they can also combine into four-quark and fivequark particles called tetraquarks and pentaquarks.
  • These exotic hadrons were predicted by theorist about six decades ago — around the same time as conventional hadrons — but they have been observed by the Large Hadron Collider and other experiments only in the past 20 years.

Source: EPIC July 2022