Bihar Board - Class 12 Physics - Chapter 13: Nuclei Multiple Choice Questions (MCQs)
For Class 12 Bihar Board, the chapter Nuclei in Physics discuss the composition and properties of the atomic nucleus, covering topics like nuclear binding energy, radioactivity, and nuclear reactions. You can find multiple-choice questions that help in mastering these topics and preparing effectively for exams on Vidyakul.
Multiple Choice Question
1. The mass of an atom is measured in
(A) Kg
(B) Mg
(C) Atomic mass unit
(D) None
Answer: (C) atomic mass unit
2. 1amu =
(A) 1.661027Kg
(B) 1.6610-27 kg
(C) 1.66053910-27 kg
(D) None
Answer: (C) 1.66053910-27 kg
3. The atomic species of the same element differing in mass are called as
(A) Isotopes
(B) Isotones
(C) Isobars
(D) None
Answer: (A) isotopes
4. The nucleus of the lightest atom of hydrogen which has a relative abundance of 99.985% is called as
(A) Neutron
(B) Proton
(C) Electron
(D) Deuterium
Answer: (B) proton
5. The two isotopes of hydrogen are
(A) Helium
(B) Deuterium
(C) Tritium
(D) Both (B) and (C)
Answer: (D) Both (B) and (C)
6. The atomic number of an atom indicates
(A) Number of electrons
(B) Number of protons
(C) Number neutrons
(D) Both number of protons and neutrons
Answer: (B) number of protons
7. The atomic mass number of the atom indicates
(A) Total number of protons
(B) Total number of protons and electrons
(C) Total number of protons and neutrons
(D) Total number of electrons
Answer: (C) total number of protons and neutrons
8. The neutrons and protons are collectively called as
(A) Neutrons
(B) Mass
(C) Nucleons
(D) None
Answer: (C) nucleons
9. 197Au79, the atomic number is here
(A) 79
(B) 197
(C) 118
(D) None
Answer: (A) 79
10. 197Au79, the atomic mass number here
(A) 197
(B) 118
(C) 79
(D) None
Answer: (A) 197
11. 197Au79, the number of protons here
(A) 197
(B) 79
(C) 118
(D) None
Answer: (B) 79
12. 197Au79, the number of electrons here
(A) 197
(B) 79
(C) 118
(D) None
Answer: (B) 79
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