Physics 11th Chap 14 : Topic 15 - Maryam Publications

Physics Chapter 14 : Topic 15

Hadrons, Baryons and Mesons

1 / 34

A hadron is a particle that is:

A) Made of electrons and photons

B) Always electrically neutral

C) Made only of leptons

D) Composed of quarks and affected by the strong interaction

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According to the Standard Model, hadrons are mainly classified into:

A) Quarks and antiquarks

B) Leptons and bosons

C) Baryons and mesons

D) Fermions and photons

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A baryon consists of:

A) One quark and one antiquark

B) Two quarks only

C) Three quarks

D) Three antiquarks only

4 / 34

A meson is composed of:

A) Three quarks

B) Only one quark

C) Two antiquarks and one quark

D) One quark and one antiquark

5 / 34

Which of the following is a baryon?

A) Electron

B) Photon

C) Proton

D) Pion

6 / 34

Which of the following is a meson?

A) Pion

B) Proton

C) Electron

D) Neutron

7 / 34

The quark composition of a proton makes it a:

A) Meson

B) Gauge boson

C) Lepton

D) Baryon

8 / 34

The quark composition of a neutron is:

A) Three quarks

B) No quarks

C) Two quarks only

D) One quark and one antiquark

9 / 34

Which particle structure represents a meson?

A) $\mathbf{uuu}$

B) $\mathbf{uud}$

C) $\mathbf{udd}$

D) $\mathbf{u}$ anti$\ \mathbf{- \ d}$

10 / 34

Which particle structure represents a baryon?

A) $\mathbf{d}$ anti$\ \mathbf{- \ d}$

B) $\mathbf{uud}$

C) $\mathbf{u}$ anti$\ \mathbf{- \ u}$

D) $\mathbf{u}$ anti$\ \mathbf{- \ d}$

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The main difference between baryons and mesons is:

A) Their quark composition

B) Their speed of movement

C) Their electric charges only

D) Their temperature

12 / 34

Which statement about hadrons is correct?

A) All hadrons contain electrons.

B) All hadrons are made of quarks.

C) All hadrons are fundamental particles.

D) All hadrons have zero charge.

13 / 34

Which of the following is NOT a hadron?

A) Pion

B) Neutron

C) Electron

D) Proton

14 / 34

A particle made of three antiquarks is classified as:

A) Lepton

B) Photon

C) Meson

D) Antibaryon

15 / 34

A meson contains:

A) Three quarks

B) Three electrons

C) A proton and neutron

D) A quark and its corresponding antiquark

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Which statement about baryons is true?

A) They have no mass.

B) They contain three quarks.

C) They contain only leptons.

D) They always contain a quark-antiquark pair.

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Which group contains only hadrons?

A) Electron, proton, photon

B) Proton, neutron, pion

C) Photon, neutrino, electron

D) Electron, photon, neutrino

18 / 34

The classification of hadrons depends mainly on:

A) Their temperature

B) Their quark arrangement

C) Their color only

D) Their size only

19 / 34

Which of the following combinations cannot form a baryon?

A) $\mathbf{uud}$

B) $\mathbf{uuu}$

C) $\mathbf{u}$ anti$\ \mathbf{- \ d}$

D) $\mathbf{udd}$

20 / 34

Which particle is an example of a baryon?

A) Photon

B) Pion

C) Kaon

D) Proton

21 / 34

Which particle is an example of a meson?

A) Antiproton

B) Kaon

C) Neutron

D) Proton

22 / 34

Hadrons are different from leptons because hadrons:

A) Are composed of quarks

B) Have no mass

C) Cannot interact

D) Always have positive charge

23 / 34

If a particle contains three quarks, it is most likely a:

A) Meson

B) Baryon

C) Lepton

D) Photon

24 / 34

If a particle contains one quark and one antiquark, it is:

A) A meson

B) A lepton

C) A neutrino

D) A baryon

25 / 34

The strong nuclear force acts directly on:

A) Leptons only

B) Electrons in atoms

C) Quarks inside hadrons

D) Photons only

26 / 34

Which statement correctly compares proton and pion?

A) Proton is baryon while pion is meson.

B) Both are mesons.

C) Both are baryons.

D) Proton is lepton while pion is baryon.

27 / 34

A hadron with baryon number $\mathbf{+ \ 1}$ is most likely:

A) A lepton

B) A baryon

C) A photon

D) A meson

28 / 34

Mesons generally have baryon number:

A) $\mathbf{+ \ 1}$

B) $\mathbf{+ \ 3}$

C) $\mathbf{0}$

D) $\mathbf{- \ 1}$

29 / 34

The reason protons and neutrons are not fundamental particles is that:

A) They cannot interact.

B) They have no mass.

C) They have no charge.

D) They are composed of smaller particles called quarks.

30 / 34

Which classification is correct?

A) Proton $\overset{\ \ \ \ \ \ \ \ \ \ \ \ \ }{\rightarrow}$ Meson, Pion $\overset{\ \ \ \ \ \ \ \ \ \ \ \ \ }{\rightarrow}$ Baryon

B) Photon $\overset{\ \ \ \ \ \ \ \ \ \ \ \ \ }{\rightarrow}$ Meson, Kaon $\overset{\ \ \ \ \ \ \ \ \ \ \ \ \ }{\rightarrow}$ Lepton

C) Proton $\overset{\ \ \ \ \ \ \ \ \ \ \ \ \ }{\rightarrow}$ Baryon, Pion $\overset{\ \ \ \ \ \ \ \ \ \ \ \ \ }{\rightarrow}$ Meson

D) Electron $\overset{\ \ \ \ \ \ \ \ \ \ \ \ \ }{\rightarrow}$ Baryon, Neutron $\overset{\ \ \ \ \ \ \ \ \ \ \ \ \ }{\rightarrow}$ Meson

31 / 34

Which combination correctly represents the structure of a baryon?

A) $\mathbf{q + q + q}$

B) $\mathbf{q + q\overline{}}$

C) $\mathbf{q\overline{} + q\overline{}}$

D) $\mathbf{q +}$ electron

32 / 34

Which combination correctly represents a meson?

A) $\mathbf{q\ q\ q\overline{}}$

B) $\mathbf{q\overline{}\ q\overline{}\ q\overline{}}$

C) $\mathbf{q\ q\ q}$

D) $\mathbf{q\ q\overline{}}$

33 / 34

A particle made from three quarks and its antiparticle made from three antiquarks are:

A) Boson and antiboson

B) Baryon and antibaryon

C) Meson and antimeson

D) Lepton and antilepton

34 / 34

Which statement about mesons is incorrect?

A) They are hadrons.

B) They experience strong interaction.

C) They contain three quarks.

D) They contain a quark and antiquark.

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