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

Related Mcqs:

1. 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

2. Tarapur (INDIA) atomic power station____________________?

   A. Has two boiling water reactors of American design
   B. Has an installed capacity of 400 MW
   C. Is the first power reactor in India, which became critical in 1969
   D. All A., B. and C.

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

   A. α
   B. β
   C. γ
   D. α & β

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

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

5. 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

6. 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

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

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

8. 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

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