Q.31 A certain radioactive nuclide of mass number ‘x’ decays by βemission and αemission to a
second nuclide of mass number ‘t’. Which of following correctly relates ‘x’ and ‘t’?
A) x = t + 4 C) x – 3 = t
B) x = t – 4 D) x – 1 = t
second nuclide of mass number ‘t’. Which of following correctly relates ‘x’ and ‘t’?
A) x = t + 4 C) x – 3 = t
B) x = t – 4 D) x – 1 = t
Q.32 During the decay of radioactive isotopes 232 90X to a stable isotope, six αparticles and four β particles are emitted, what is the atomic number ‘Z’ and mass number ‘A’ of the stable isotopes.
A) Z = 70, A = 220 C) Z = 82, A = 212
B) Z = 78, A = 212 D) Z = 82, A = 208
Q.33 Cobalt 60 is used in medicine and is an intense source of:
A) α-particles C) γ-rays
B) β-particles D) Neutrons
Q.34 Sodium 24 has halflife of 15 hour and it is used in medicine to estimate:
A) Kidney Function C) Iron in Plasma
B) Plasma Blood Volume D) Thyroid Function
A) Z = 70, A = 220 C) Z = 82, A = 212
B) Z = 78, A = 212 D) Z = 82, A = 208
Q.33 Cobalt 60 is used in medicine and is an intense source of:
A) α-particles C) γ-rays
B) β-particles D) Neutrons
Q.34 Sodium 24 has halflife of 15 hour and it is used in medicine to estimate:
A) Kidney Function C) Iron in Plasma
B) Plasma Blood Volume D) Thyroid Function
Q.36 Wavelength of γrays is:
A) Equal to the X-rays C) Longer to the X-rays
B) Shorter to the X-rays D) Boarder to the X-rays
A) Equal to the X-rays C) Longer to the X-rays
B) Shorter to the X-rays D) Boarder to the X-rays