The top quark
a. is the only quark not yet detected experimentally
b. has been shown not to exist
c. was discovered at Fermilab
d. none of the above
[Ques. 2] Gluons
a. are carriers of the color force
b. posses color charge
c. can interact with each other via the color force
d. can form glueballs
e. all of the above
[Ques. 3] The color force between quarks is carried by
a. mesons
b. the strong force
c. leptons
d. gluons
e. none of the above
[Ques. 4] How many quark colors are there?
a. 1 c. 6
b. 3 d. none of the above
[Ques. 5] How many quark flavors are there?
a. 1 c. 6
b. 3 d. none of the above
[Ques. 6] What is the quark structure of an electron?
a. uud
b. udd
c. uuu
d. ddd
e. the question does not make sense
[Ques. 7] What is the quark structure of a neutron?
a. uud
b. udd
c. uuu
d. ddd
e. the question does not make sense
[Ques. 8] What is the quark structure of a proton?
a. uud
b. udd
c. uuu
d. ddd
e. the question does not make sense
[Ques. 9] Electrons are spin one-half, photons are
a. also spin one-half c. spin one
b. spin zero d. none of the above
[Ques. 10] Half integral spin means spin
a. 1/2 c. 1/2, 3/2, 5/2, ...
b. 1/2, 1, 3/2, 2, ... d. none of the above
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