ENTRANCE TEST – 2012 Multiple Questions and Answers.




11.A radioactive nuclide decays by emitting an alpha particle, a beta particle and a gamma ray photon, the change in the nucleon number will be:
A. -4
B. -1
C. -2
D. -3

12.A half-life of sodium-24 is _______ which is used to estimate the volume of blood in a patient:
A. 6 hours
B. 15 hours
C. 8 hours
D. 15 days

13.Which of the following is unit of absorbed dose?
A. Sievert
B. Gray
C. Roentgen
D. Curie

14.The isotope of Iodine-131 is used in the treatment of
A. Blood cancer
B. Bone cancer
C. Lung tumor
D. Thyroid cancer

15.Which of the following effect is observed due to emission of β― during the phenomenon of radioactivity?
A. A increases by 1 and Z remains same
B. Z increases by 1 and A remains same
C. Z decreases by 1 and A remains same
D. A decreases by 1 and Z remains same

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