CBSE Class 12 Atoms Multiple Choice Questions with Answers. MCQ Questions Class 12 Atoms with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Atoms MCQs with Answers to know their preparation level.
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MCQ Questions Class 12 Atoms with Answers - Set - 4
Question 1:
The binding energy of a deuteron is about:
(a) 2.22 MeV
(b) 2.22 J
(c) 2.22 eV
(d) None of these
Correct Answer – (A)
Question 2 :
The total energy that will be released if a nucleus is built from its constituents is called the:
(a) binding energy of the nucleus
(b) binding energy of the solid
(c) binding energy of the atom
(d) None of these
Correct Answer – (A)
Question 3 :
Transmutation of nuclei was discovered by:
(a) Rutherford
(b) Becquerel
(c) Pauli
(d) None of these
Correct Answer – (A)
Question 4 :
P-decay produces:
(a) isobars
(b) isotopes
(c) isotones
(d) All the above
Correct Answer – (A)
Question 5 :
Fg and Fe represents the gravitational and electrostatic force respectively between two electrons situated at some distance the ratio Fg/Fe is if the order of:
(a) 9.8
(b) 109
(c) 1042
(d) 10-42
Correct Answer – (D)
MCQ Questions Class 12 Atoms with Answers
Question 6 :
The binding energy of 4/2 He is about:
(a) 28.3 eV
(b) 28.3 MeV
(c) 28.3 J
(d) 2.83 MeV
Correct Answer – (B)
Question 7 :
The energy equivalent to mass defect is called :
(a) binding energy
(b) internal energy
(c) external energy
(d) enthalpy
Correct Answer – (A)
Question 8 :
Natural radioactivity was discovered by:
(a) Joliot
(b) Becquerel
(c) Pauli
(d) None of these
Correct Answer – (B)
Question 9 :
Artificial radioactivity was discovered by:
(a) Joliot
(b) Becquerel
(c) Pauli
(d) None of these
Correct Answer – (A)
Question 10 :
According to Bohr’s theory of hydrogen atom, the radius r of stationary orbit are related to principal quantum number n as:
(a) rg ∝ 1/n2
(b) rg ∝ 1/n
(c) rg ∝ n
(d) rg ∝ /n2
Correct Answer – (D)
- NCERT Solutions Class 11 Chemistry Chapter 1 : Some Basic Concepts of Chemistry
- NCERT Solutions Class 11 Chemistry Chapter 2 : Structure Of The Atom
- NCERT Solutions Class 11 Chemistry Chapter 3 : Classification of Elements and Periodicity in Properties
- NCERT Solutions Class 11 Chemistry Chapter 4 : Chemical Bonding and Molecular Structure
- NCERT Solutions Class 11 Chemistry Chapter 5 : States of Matter
- NCERT Solutions Class 11 Chemistry Chapter 6 : Thermodynamics
- NCERT Solutions Class 11 Chemistry Chapter 7 : Equilibrium
- NCERT Solutions Class 11 Chemistry Chapter 8 : Redox Reactions
- NCERT Solutions Class 11 Chemistry Chapter 9 : Hydrogen
- NCERT Solutions Class 11 Chemistry Chapter 10 : The s-Block Elements
- NCERT Solutions Class 11 Chemistry Chapter 11 : The p-Block Elements
- NCERT Solutions Class 11 Chemistry Chapter 12 : Organic Chemistry: Some Basic Principles and Techniques
- NCERT Solutions Class 11 Chemistry Chapter 13 : Hydrocarbons
- NCERT Solutions Class 11 Chemistry Chapter 14 : Environmental Chemistry
