Atomic Theory -Multiple Choice Questions Quiz

Interactive MCQs on “Atomic Theory”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: Who proposed the first atomic theory based on philosophical reasoning?

(a) Albert Einstein
(b) John Dalton
(c) Ernest Rutherford
(d) Niels Bohr

Question 2: According to John Dalton's atomic theory, atoms are:

(a) Indivisible and indestructible particles
(b) Made up of protons, neutrons, and electrons
(c) Composed of positively charged protons and negatively charged electrons
(d) Always in motion around the nucleus

Question 3: Who discovered the electron and proposed the plum pudding model of the atom?

(a) Ernest Rutherford
(b) J.J. Thomson
(c) Niels Bohr
(d) Marie Curie

Question 4: Which scientist's experiment led to the discovery of the atomic nucleus?

(a) J.J. Thomson
(b) Niels Bohr
(c) Ernest Rutherford
(d) Max Planck

Question 5: According to Bohr's model of the atom, electrons:

(a) Move in random orbits around the nucleus
(b) Move in circular orbits at fixed energy levels
(c) Move in continuous orbits with varying energy
(d) Move at the speed of light around the nucleus

Question 6: The atomic number of an element is equal to the number of:

(a) Protons in the nucleus
(b) Electrons in the nucleus
(c) Protons and neutrons in the nucleus
(d) Neutrons in the nucleus

Question 7: Who introduced the concept of energy levels or shells for electrons in the atom?

(a) John Dalton
(b) J.J. Thomson
(c) Niels Bohr
(d) Ernest Rutherford

Question 8: What does the term 'isotope' refer to in atomic theory?

(a) Atoms with different numbers of protons and electrons
(b) Atoms with the same number of protons but different numbers of neutrons
(c) Atoms with the same number of neutrons but different numbers of protons
(d) Atoms with different numbers of electrons in their outermost shell

Question 9: What does the term 'quantum' refer to in atomic theory?

(a) The maximum number of electrons that can occupy a particular energy level
(b) The energy required to remove an electron from an atom
(c) The discrete energy levels that electrons can occupy around the nucleus
(d) The process of an electron moving from one energy level to another

Question 10: Who developed the modern quantum mechanical model of the atom, which uses mathematical equations to describe the behavior of electrons?

(a) John Dalton
(b) Werner Heisenberg
(c) Louis de Broglie
(d) Erwin Schrödinger