QUIZ 1-NUCLEI(Basic of nucleus)

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1. What is atomic number?

Total number of electrons and protons

Total number of electrons

Total number of protons

Total number of electrons, protons and neutrons

2. If a nucleus is represented as ₂₆X⁵⁶ then numbr of protons, neutrons, mass number and atomic number are

56,30,26,26

26,56,30,26

30,26,56,26

26,30,56,26

3. What is the nuclear radius of Fe^₁₂₅, if that of Al^₂₇ is 3.6 fermi?

2.16 fermi

21.6 fermi

0.6 fermi

6 fermi

4. Nuclear density of a nucleus is

changes abruptly

constant

more for heavy nucleus

less for lighter nucleus

5. What wil be the ratio of radius or nucleus (R₁:R₂) for two nucleus having mass number A₁=16 and A₂=54

8:27

3:2

1:1

2:3

6. What wil be the ratio of nuclear density of nucleus (D₁:D₂) for two nucleus having mass number A₁=16 and A₂=54

1:1

3:2

8:27

2:3

7. Is Mass number and atomic mass are same ?

True

False

8. Correct relation betwee radius of a nucleus(R) and its Mass number(A)

R=A^1/3

R=R_oA^1/3

R=R_oZ^1/3

R=R_oA^2/3

9. Two isotopes differ due to difference in

number of atoms

number of protons

number of electrons

number of neutrons

10. What are nucleons

Total number of protons,neutrons and electrons present in an atom.

Total number of Neutrons present in a nucleus.

Total number of protons present in a nucleus.

Total number of protons and neutrons present in a nucleus.

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