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Radiochemistry and Nuclear Chemistry self-test # 10

Comprises Chapter 10

This is a self grading test of your knowledge. It consists of 20 randomly chosen questions with single or multiple answers. The questions with single answers have round buttons and the questions with perhaps more than one correct answer have square buttons. Answer the questions by clicking on the corresponding button in the list of alternative answers. On questions with a single answer (round buttons to click on), it is only possible to mark one of the alternative answers as correct.
Grading of the completed test is automatic when you click on the button marked "GRADE MY ANSWERS" at the end of the test.
Correct answers can be read by clicking on the button having the same number as the question. You find these buttons at the end of the test. You can also refresh your memory first by jumping directly to the answer buttons and click on them to get answers and read relevant parts of the book before doing this test.
On the questions with one or more possible answers (squares to click on) only the first click on each button is recorded as an answer. Hence you must click on the reset button below the question before you can change the original answer(s). Failure to do this will probably make the answers on this question regarded as wrong in the grading process.
Please observe that your teacher may require a deeper understanding of the treated subject than reflected by this test. In case you have any valuable comments or questions regarding this self-test, explain them in an e-mail to: jol@nc.chalmers.se 


Question # 1 (One or more answers) The cosmic radiation consisting of particles arises from several sources. Among the most important are

    A) the Earth
    B) the Moon
    C) the Sun
    D) Jupiter
    E) the Milky Way

In case of an error in the answers above, please click on this button before making any corrections 

Question # 2 (One answer) Which of the following particle types have not yet been found?

    A) baryons
    B) fermions
    C) photons
    D) gluons
    E) gravitons

Question # 3 (One answer) The word pions is used for

    A) poor farmers in South America
    B) a type of mesons
    C) cosmic radiation with an energy >1 GeV
    D) a type of baryons
    E) a type of leptons

Question # 4 (One answer) Which of the following "particles" is an "exchange particle" for the electromagnetic force?

    A) the baryon
    B) the electron
    C) the fermion
    D) the photon
    E) the hadron

Question # 5 (One or more answers) Matter of more than one kind exists. These kinds are called

    A) Anti-matter
    B) Confederate matter
    C) Homo matter
    D) Koino matter
    E) Kuiniform matter

In case of an error in the answers above, please click on this button before making any corrections 

Question # 6 (One or more answers) Bosons can have an intrinsic spin of

    A) 0
    B) ½
    C) 1
    D) 1½
    E) 2

In case of an error in the answers above, please click on this button before making any corrections 

Question # 7 (One answer) According to the QCD-model a neutron is made up of

    A) two up-quarks and a down-quark
    B) two up-quarks and two down-quarks
    C) one up-quark and one down-quark
    D) one up-quark and two down-quarks
    E) one up-quark and two top-quarks

Question # 8 (One answer) How many families of quarks are there?

    A) 2
    B) 3
    C) 4
    D) 5
    E) 6

Question # 9 (One or more answers) One assumes that there are three types of neutrinos. Which of the following are they?

    A) adamski neutrinos
    B) electron neutrinos
    C) mysko neutrinos
    D)     p neutrinos
    E)     t neutrinos

In case of an error in the answers above, please click on this button before making any corrections 

Question # 10 (One answer) With the term "matter waves" one understands

    A) sound waves in metals
    B) ocean waves in the sea
    C) the wave nature of matter
    D) the wave nature of light
    E) a vibrating violin string

Question # 11 (One answer) The main part of the cosmic radiation which arrives at the surface of the Earth consists of high energy

    A) a-particles
    B) electrons
    C) photons
    D) muons
    E) neutrons

Question # 12 (One answer) The anti-particle to the electron is called

    A) muon
    B) ozone
    C) positron
    D) proton
    E) neutrino

Question # 13 (One answer) How many elementary building blocks exists according to the standard model, including anti-particles?

    A) 3
    B) 6
    C) 12
    D) 18
    E) 24

Question # 14 (One answer) The charge of an up-quark is

    A) -2/3
    B) -1/3
    C) +1/3
    D) +2/3
    E) +3/3

Question # 15 (One or more answers) Which of the following are regarded as "Forces of Nature"?

    A) gravitation
    B) strong interaction
    C) electromagnetic force
    D) wind
    E) weak interaction

In case of an error in the answers above, please click on this button before making any corrections 

Question # 16 (One answer) The Standard Model assumes that all known "elementary particles" are composed of

    A) chaosons
    B) caviars
    C) crutons
    D) quarks
    E) k-zerons

Question # 17 (One answer) How large fraction of all ions in cosmic radiation is protons?

    A) <20%
    B) 20%
    C) 50%
    D) 70%
    E) ~100%

Question # 18 (One answer) If an atom had the same size as the Earth - how big would then a quark be?

    A) ~ ½ fm
    B) ~ ½ nm
    C) ~ ½ mm
    D) ~ ½ cm
    E) ~ ½ km

Question # 19 (One or more answers) Which of the following ones are classified as leptons?

    A) baryons
    B) electrons
    C) gluons
    D) muons
    E) neutrinos

In case of an error in the answers above, please click on this button before making any corrections 

Question # 20 (One answer) Pions are unstable and decay to

    A) one electron and one proton
    B) one muon and one     m-neutrino
    C) one farad and two     t-neutrinos
    D) two muons and one anti-neutrino
    E) three coulombs

Correct answers to each question can be obtained by clicking on the corresponding button below

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(Updated 2001-08-22)