QUIZ 1-NUCLEI(Basic of nucleus)

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1. What is atomic number?

Total number of electrons, protons and neutrons

Total number of electrons and protons

Total number of protons

Total number of electrons

2. Is Mass number and atomic mass are same ?

False

True

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

2:3

8:27

1:1

3:2

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

R=R_oA^2/3

R=A^1/3

R=R_oZ^1/3

R=R_oA^1/3

5. Two isotopes differ due to difference in

number of neutrons

number of atoms

number of electrons

number of protons

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

2:3

1:1

8:27

3:2

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

26,30,56,26

56,30,26,26

30,26,56,26

26,56,30,26

8. Nuclear density of a nucleus is

less for lighter nucleus

changes abruptly

more for heavy nucleus

constant

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

6 fermi

2.16 fermi

0.6 fermi

21.6 fermi

10. What are nucleons

Total number of protons and neutrons present in a nucleus.

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

Total number of protons present in a nucleus.

Total number of Neutrons present in a nucleus.

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