A. Of uncertainty principle
B. It may have isobars
C. It contains neutrons
D. It may have isotopes
Related Mcqs:
- 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 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 atomic number of a radioactive element is not changed, when it emits _____________ rays?
A. α
B. β
C. γ
D. α & β - The atomic number of an element is equal to the number of ______________ present in its atom?
A. Neutrons
B. Electrons
C. Protons
D. Either B. or C. - When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as____________________?
A. Isomers
B. Isotopes
C. Isobars
D. Isotones - Energy equivalent to one atomic mass unit (amu) is ______________ MeV?
A. 9.31
B. 93.1
C. 931
D. 9310 - 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 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 mass number of an element is not changed, when it emits _______________ radiations?
A. α & β
B. β & γ
C. γ & α
D. α, β, & γ - “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
