Related Mcqs:

1. U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about _____________ percent?

   A. 85
   B. 50
   C. 3
   D. 97

2. 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

3. The electric power generation cost in nuclear power plant is less than that in a coal based thermal power plant, mainly because the________________?

   A. Fuel cost per unit power generated is less
   B. Thermal efficiency of the former is higher
   C. Maintenance cost of the former is less
   D. None of these

4. The decrease in the atomic number is not observed in case of________________?

   A. Electron capture
   B. β-emission
   C. α-emission
   D. Positron emission

5. The atomic number of a radioactive element is not changed, when it emits _____________ rays?

   A. α
   B. β
   C. γ
   D. α & β

6. The ratio of atomic radius to its nuclear radius is about___________________?

   A. 105
   B. 108
   C. 1012
   D. 1015

7. 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

8. Nuclides having the same atomic numbers are termed as___________________?

   A. Isotopes
   B. Isomers
   C. Isotones
   D. Isobars

9. 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

10. Energy equivalent to one atomic mass unit (amu) is ______________ MeV?

    A. 9.31
    B. 93.1
    C. 931
    D. 9310