Question : 31.Alpha, beta, and gamma radiation called ionizing radiation because, as : 1309634

 

 

31.Alpha, beta, and gamma radiation are called ionizing radiation because, as they travel through matter, they

a.cause ion pair formation

b.cause free radical formation

c.decay into ions

d.more than one correct response

e.no correct response

 

 

 

32.Which of the following statements about natural radioactive emissions is incorrect?

a.Beta particles are emitted from nuclei at speeds up to 0.9 the speed of light.

b.Alpha particles cannot penetrate the body’s outer layers of skin.

c.A piece of aluminum foil will stop gamma radiation.

d.More than one correct response.

e.No correct response.

 

 

 

33.A Geiger counter operates on the principle that radiation

a.exposes photographic film

b.ionizes atoms and molecules

c.causes the temperature of water to increase

d.more than one correct response

e.no correct response

 

 

34.Which of the following statements concerning nuclear fission is correct?

a.Neutrons are both reactants and products in the fission process.

b.Uranium-238 is the most important fissionable radioisotope.

c.A number of diagnostic procedures in nuclear medicine are now based on nuclear fission.

d.More than one correct response.

e.No correct response.

 

 

 

35.Which of the following statements concerning nuclear fusion is correct?

a.It is the process by which the sun generates its energy.

b.It is the basis for the generation of electrical energy in nuclear power plants.

c.It occurs at lower temperatures than does nuclear fission.

d.more than one correct response

e.no correct response

 

 

 

36.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) In alpha particle decay the product nucleus has the same atomic number as the parent nucleus.

(2) Nuclear fission is the process by which the sun generates its energy.

(3) All laboratory-produced radionuclides have half-lives of less than one hour.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

37.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) Atoms with unstable nuclei are called nuclides and atoms with stable nuclei are called isotopes.

(2) In radioactive decay, a radionuclide is transformed into the nuclide of another element.

(3) The magnitude of the decay rate for a radionuclide is a function of the nuclide’s temperature.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

38.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) Radioisotopes used in diagnostic medicine are usually gamma emitters.

(2) Ion pair formation involves the nonchemical removal of electrons from atoms to form ions.

(3) In beta decay the parent and daughter nuclides have the same mass number.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

39.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) Radioactive nuclides produced by bombardment reactions obey the same laws as naturally-occurring radioactive nuclides.

(2) The penetrating power of beta particles exceeds that of gamma rays.

(3) After three half-lives have elapsed, three-fourths of a radioactive sample would have decayed.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

40.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) The final product in a radioactive decay series is always a stable nuclide.

(2) The most important fissionable radionuclide is uranium-238.

(3) Beta particles have a charge of -1 and have no mass.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.