A. α & β
B. β & γ
C. γ & α
D. α, β, & γ
Related Mcqs:
- The atomic number of a radioactive element is not changed, when it emits _____________ rays?
A. α
B. β
C. γ
D. α & β - The 92U238 emits an a-particle. The product is____________________?
A. 90U234
B. 90U238
C. 90U236
D. 92U236 - The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?
A. A + Z
B. A – Z
C. A
D. Z - The half life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to ______________ gm?
A. 1/4
B. 1/8
C. 1/2
D. 1/16 - The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is ___________________?
A. 1
B. 0.5
C. 2
D. 4 - The mass number of an element is equal to the number of _____________ in the nucleus?
A. Electrons
B. Neutrons
C. Protons
D. Neutrons plus protons (i.e., nucleons) - The atomic mass of an element is fractional, because ______________________?
A. Of uncertainty principle
B. It may have isobars
C. It contains neutrons
D. It may have isotopes - Which of the following radiations is the least penetrating ?
A. α-rays
B. β-rays
C. γ-rays
D. X-rays - The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?
A. 159
B. 1837
C. 2537
D. 10000 - “Critical mass” is the minimum mass of nuclear fissile material required for the_______________________?
A. Sustainment of chain reaction
B. Power generation on commercial scale
C. Economic power generation
D. None of these
