There are 5 tests with 10 questions in each test.
Questions are selected/reframed as theory and concept-based questions from the uploaded Structure of Atom material.
Submit the test to see your score.
Correct answers stay hidden until the password is entered.
Each question carries 1 mark.

Answer-reveal password: required only after submitting a test.

Test 1 — Atomic Models & Subatomic Particles

10 questions • 1 mark each

1. Who proposed the first atomic model mentioned in the source?

A. J.J. Thomson B. Ernest Rutherford C. Niels Bohr D. James Chadwick

2. Thomson's cathode-ray experiments provided evidence for the existence of:

A. Protons B. Electrons C. Neutrons D. Nuclei

3. According to the source, cathode rays are made of particles that are:

A. Positively charged B. Neutral C. Negatively charged D. Without charge

4. Bohr modified which earlier atomic model by introducing fixed orbits?

A. Dalton's model B. Thomson's model C. Rutherford's model D. Goldstein's model

5. Rutherford's scattering experiment showed that most alpha particles:

A. Bounced back B. Passed through the foil undeflected C. Were absorbed by the nucleus D. Changed into electrons

6. The very small number of alpha particles that were deflected through large angles indicated the presence of a:

A. Large electron cloud B. Small, concentrated nucleus C. Uniform positive sphere D. Neutron shell

7. Which property of the atom could be explained by Thomson's model according to the source?

A. Hydrogen spectrum B. Overall neutrality C. Fixed electron orbits D. Nuclear stability

8. A major problem with Rutherford's model was its inability to explain:

A. The existence of electrons B. The stability of the atom C. The presence of protons D. The existence of empty space

9. Bohr's model assumes that electrons in permitted stationary orbits:

A. Continuously radiate energy B. Do not radiate energy C. Have no energy D. Remain outside the atom

10. Bohr's model successfully explains the spectrum of:

A. Every multi-electron atom B. Hydrogen-like species having one electron C. Molecules only D. Solids only

Correct answers are locked.

Test 2 — Bohr Model, Energy & Spectra

10 questions • 1 mark each

1. The first use of quantum theory to explain atomic structure in the source is attributed to:

A. Rutherford B. Bohr C. Thomson D. Heisenberg

2. Bohr proposed that the energy of electrons in an atom is:

A. Continuous B. Quantized C. Always zero D. Independent of the orbit

3. In Bohr's model, electrons are allowed to move in:

A. Any arbitrary path B. Certain fixed orbits C. Only straight lines D. The nucleus itself

4. The allowed orbits in Bohr's model are also described as:

A. Energy levels B. Isotopes C. Nuclei D. Nodes

5. The best evidence for definite energy levels is that atomic spectra contain:

A. Only continuous bands B. Discrete spectral lines C. No lines D. Only infrared waves

6. When an electron moves from a higher energy level to a lower energy level, energy is:

A. Absorbed B. Emitted C. Destroyed D. Converted into matter

7. The Balmer series is associated with transitions ending at:

A. The first shell B. The second shell C. The third shell D. The fourth shell

8. The spectrum produced by radiation emitted after a substance absorbs energy is called an:

A. Absorption spectrum B. Emission spectrum C. Continuous spectrum D. Band-free spectrum

9. According to the source, the band spectrum is associated mainly with:

A. Molecules B. Individual nuclei C. Only protons D. Only neutrons

10. A key limitation of Bohr's model is that it cannot satisfactorily explain:

A. Hydrogen-like atoms B. Larger multi-electron atoms C. Quantized energy D. Stationary orbits

Correct answers are locked.

Test 3 — Quantum Numbers & Orbitals

10 questions • 1 mark each

1. The principal quantum number primarily identifies the:

A. Main energy level or shell B. Orientation of spin C. Orientation of an orbital D. Shape only

2. The azimuthal quantum number is associated with the:

A. Shape of an orbital B. Mass of the nucleus C. Number of neutrons D. Speed of light

3. The magnetic quantum number describes the:

A. Orientation of an orbital B. Size of the nucleus C. Mass of an electron D. Atomic number

4. The spin quantum number describes the:

A. Orientation of electron spin B. Shape of an orbital C. Main energy level D. Number of shells

5. An s-orbital has azimuthal quantum number:

A. 0 B. 1 C. 2 D. 3

6. The number of subshells in a principal shell is equal to:

A. n B. 2n C. n² D. 2n²

7. The subshell notation corresponding to l = 0 is:

A. s B. p C. d D. f

8. The subshell notation corresponding to l = 2 is:

A. s B. p C. d D. f

9. Two electrons occupying the same orbital are distinguished by their:

A. Principal quantum number B. Magnetic quantum number C. Spin quantum number D. Mass number

10. The 1s orbital is spherically symmetric because s-orbitals have:

A. Zero angular quantum number B. Maximum spin quantum number C. No principal quantum number D. Two nuclei

Correct answers are locked.

Test 4 — Electronic Configuration & Filling Rules

10 questions • 1 mark each

1. The principle stating that lower-energy orbitals are filled before higher-energy orbitals is:

A. Pauli exclusion principle B. Aufbau principle C. Hund's rule D. Uncertainty principle

2. The n + l rule is used to determine the:

A. Order of orbital filling B. Number of neutrons C. Atomic mass D. Shape of the nucleus

3. When two orbitals have different n + l values, the orbital with the lower n + l value generally has:

A. Higher energy B. Lower energy C. No energy D. Equal energy in every case

4. Hund's rule states that electrons occupy degenerate orbitals:

A. Pairing immediately B. Singly before pairing C. Only in opposite shells D. Only after ionisation

5. The Pauli exclusion principle states that no two electrons in an atom can have:

A. The same mass B. The same set of four quantum numbers C. The same energy ever D. The same shell

6. An orbital can accommodate a maximum of:

A. 1 electron B. 2 electrons C. 6 electrons D. 8 electrons

7. The p subshell can accommodate a maximum of:

A. 2 electrons B. 4 electrons C. 6 electrons D. 10 electrons

8. The source notes that chromium and copper show exceptions to simple Aufbau filling because:

A. Half-filled or completely filled configurations have extra stability B. They contain no electrons C. Their nuclei are unstable D. They have no d orbitals

9. After completion of an np⁶ configuration, the next orbital filled is generally:

A. (n + 1)s B. (n + 1)d C. (n + 1)f D. ns

10. The arrangement and distribution of electrons among shells and subshells is called:

A. Electronic configuration B. Atomic mass C. Nuclear charge D. Emission spectrum

Correct answers are locked.

Test 5 — Atomic Number, Mass Number, Isotopes & Modern Concepts

10 questions • 1 mark each

1. Atomic number is defined as the number of:

A. Neutrons in the nucleus B. Protons in the nucleus C. Protons plus neutrons D. Electrons plus neutrons

2. For a neutral atom, the number of electrons is equal to the number of:

A. Neutrons B. Protons C. Nucleons only D. Shells

3. Mass number is the total number of:

A. Electrons and protons B. Protons and neutrons C. Neutrons and electrons D. Only protons

4. The difference between mass number and atomic number gives the number of:

A. Electrons B. Neutrons C. Protons D. Orbitals

5. Isotopes have the same:

A. Mass number B. Atomic number C. Number of neutrons D. Physical properties in every case

6. Isotopes of an element may have different physical properties because they have different:

A. Atomic numbers B. Mass numbers C. Numbers of protons D. Element symbols

7. Atoms having the same mass number but different atomic numbers are called:

A. Isotopes B. Isobars C. Isoelectronic species D. Isotones

8. Species having the same number of electrons are described as:

A. Isotopes B. Isobars C. Isoelectronic species D. Isotones

9. Heisenberg's uncertainty principle rules out the idea of:

A. Quantized energy B. Definite electron paths or trajectories C. Atomic number D. Isotopes

10. The de Broglie concept associates a moving microscopic particle with:

A. A matter wave B. A fixed nucleus C. A new atomic number D. A mass number

Correct answers are locked.

Facebook SDK (Plugin)

RAVI TEST PAPERS

subscribe

NEET Structure of Atom 50 MCQS QUIZ AUGUST 21

Instructions

Test 1 — Atomic Models & Subatomic Particles

1. Who proposed the first atomic model mentioned in the source?

2. Thomson's cathode-ray experiments provided evidence for the existence of:

3. According to the source, cathode rays are made of particles that are:

4. Bohr modified which earlier atomic model by introducing fixed orbits?

5. Rutherford's scattering experiment showed that most alpha particles:

6. The very small number of alpha particles that were deflected through large angles indicated the presence of a:

7. Which property of the atom could be explained by Thomson's model according to the source?

8. A major problem with Rutherford's model was its inability to explain:

9. Bohr's model assumes that electrons in permitted stationary orbits:

10. Bohr's model successfully explains the spectrum of:

Test 2 — Bohr Model, Energy & Spectra

1. The first use of quantum theory to explain atomic structure in the source is attributed to:

2. Bohr proposed that the energy of electrons in an atom is:

3. In Bohr's model, electrons are allowed to move in:

4. The allowed orbits in Bohr's model are also described as:

5. The best evidence for definite energy levels is that atomic spectra contain:

6. When an electron moves from a higher energy level to a lower energy level, energy is:

7. The Balmer series is associated with transitions ending at:

8. The spectrum produced by radiation emitted after a substance absorbs energy is called an:

9. According to the source, the band spectrum is associated mainly with:

10. A key limitation of Bohr's model is that it cannot satisfactorily explain:

Test 3 — Quantum Numbers & Orbitals

1. The principal quantum number primarily identifies the:

2. The azimuthal quantum number is associated with the:

3. The magnetic quantum number describes the:

4. The spin quantum number describes the:

5. An s-orbital has azimuthal quantum number:

6. The number of subshells in a principal shell is equal to:

7. The subshell notation corresponding to l = 0 is:

8. The subshell notation corresponding to l = 2 is:

9. Two electrons occupying the same orbital are distinguished by their:

10. The 1s orbital is spherically symmetric because s-orbitals have:

Test 4 — Electronic Configuration & Filling Rules

1. The principle stating that lower-energy orbitals are filled before higher-energy orbitals is:

2. The n + l rule is used to determine the:

3. When two orbitals have different n + l values, the orbital with the lower n + l value generally has:

4. Hund's rule states that electrons occupy degenerate orbitals:

5. The Pauli exclusion principle states that no two electrons in an atom can have:

6. An orbital can accommodate a maximum of:

7. The p subshell can accommodate a maximum of:

8. The source notes that chromium and copper show exceptions to simple Aufbau filling because:

9. After completion of an np⁶ configuration, the next orbital filled is generally:

10. The arrangement and distribution of electrons among shells and subshells is called:

Test 5 — Atomic Number, Mass Number, Isotopes & Modern Concepts

1. Atomic number is defined as the number of:

2. For a neutral atom, the number of electrons is equal to the number of:

3. Mass number is the total number of:

4. The difference between mass number and atomic number gives the number of:

5. Isotopes have the same:

6. Isotopes of an element may have different physical properties because they have different:

7. Atoms having the same mass number but different atomic numbers are called:

8. Species having the same number of electrons are described as:

9. Heisenberg's uncertainty principle rules out the idea of:

10. The de Broglie concept associates a moving microscopic particle with:

You may like these posts

Post a Comment

NOV 1ST OFFER

CBSE 12TH TEST SERIES

TEST GROUP FEES

JOIN FREE CBSE WHATSAPP TEST GROUP

JOIN FREE NEET JEE TEST GROUP

TN SAMACHEER KALVI FREE TEST GROUP

ALL CLASSES LINKS

PDF MATERIALS

CLICK FOR MY YOUTUBE VIDEO'S

ALL SUBJECTS VERY IMPOTANT

DOWNLOAD PDF TEST PAPERS

WHATSAPP FREE TEST GROUP LINKS

FREE MCQS QUIZ TYPE

Categories

Ads

About Us

SOCIAL MEDIA

Footer Copyright