Start learning →

ISC Class 12 Atoms and Nuclei — practice questions

Explore 51 free Atoms and Nuclei questions in ISC Class 12 Physics. Open each question or exercise to read its content, reference answers and available explanation.

Practise Atoms and Nuclei with Quill →

Atoms and Nuclei questions and exercises with answers

Showing questions 1–30 of 51.

Complete the Law: Modern Physics (ISC 12)Read the answer and worked solution →Next Term: Modern Physics (ISC 12)Read the answer and worked solution →Line up three jumps in one bandRead the answer and worked solution →Which iso- term is itRead the answer and worked solution →Order the three decaysRead the answer and worked solution →Judge the assertion and the reasonRead the answer and worked solution →Type the nuclear numbersRead the answer and worked solution →Spot the false statementRead the answer and worked solution →Complete the size of the nucleusRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →The minimum wavelength $\lambda_{\min}$ in the continuous X-ray spectrum of an X-ray tube depends only onRead the answer and worked solution →Flip and pair: problem with the model that solved itRead the answer and worked solution →NEET · Physics · Bohr-Atom Transitions — Energy OrderRead the answer and worked solution →Which model does this belong to?Read the answer and worked solution →Bohr's postulatesRead the answer and worked solution →True or false: the nucleusRead the answer and worked solution →Charge and neutralityRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Tap every problem Bohr's model was built to solveRead the answer and worked solution →Flip and pair: model with its pictureRead the answer and worked solution →Strength or weakness?Read the answer and worked solution →Reading the models backRead the answer and worked solution →Assertion and reason: modelsRead the answer and worked solution →True or false: line spectraRead the answer and worked solution →Bohr's postulate quantises the angular momentum of an electron in a stationary orbit asRead the answer and worked solution →Which spectral series of hydrogen lies in the visible region of the electromagnetic spectrum?Read the answer and worked solution →Explained, or left unexplained?Read the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →The ratio of the longest wavelength in the Lyman series to the longest wavelength in the Balmer series of hydrogen isRead the answer and worked solution →

Worked practice questions

Complete the Law: Modern Physics (ISC 12)

Read exercise and reference answers
Missing parts
  1. Answer
    work function
    Choices
    1. work function
    2. kinetic energy
    3. momentum
  2. Answer
    threshold
    Choices
    1. threshold
    2. natural
    3. cut-off voltage
  3. Answer
    intensity
    Choices
    1. intensity
    2. wavelength
    3. charge
Complete the statement
Einstein's equation is hf = {0} + (1/2)mv^2. Below the {1} frequency, no electrons are emitted regardless of {2}.
Instructions
Pick the word that fills each blank.

Open this exercise →

Next Term: Modern Physics (ISC 12)

Read exercise and reference answers
Questions
  1. Question
    In Bohr's model, angular momentum is quantized as L =
    Correct
    n h / 2pi
    Choices
    1. n h / 2pi
    2. n h
    3. h / 2pi
  2. Question
    The energy of the ground state of hydrogen is
    Correct
    -13.6 eV
    Choices
    1. -13.6 eV
    2. -3.4 eV
    3. 0 eV
  3. Question
    Radioactive decay follows the law N =
    Correct
    N0 e^(-lambda t)
    Choices
    1. N0 e^(-lambda t)
    2. N0 e^(lambda t)
    3. N0 t
  4. Question
    The number of nucleons in a nucleus is the
    Correct
    mass number A
    Choices
    1. mass number A
    2. atomic number Z
    3. neutron number N
Instructions
Pick the correct completion for each prompt.

Open this exercise →

Line up three jumps in one band

Read exercise and reference answers
Grid
    1. Group
      Ultraviolet
      Item
      2 to 1
    2. Group
      Visible
      Item
      3 to 2
    3. Group
      Infrared
      Item
      4 to 3
    1. Group
      Visible
      Item
      4 to 2
    2. Group
      Ultraviolet
      Item
      3 to 1
    3. Group
      Infrared
      Item
      5 to 3
    1. Group
      Infrared
      Item
      6 to 3
    2. Group
      Ultraviolet
      Item
      4 to 1
    3. Group
      Visible
      Item
      5 to 2
Groups
  1. Item
    Ultraviolet
  2. Item
    Visible
  3. Item
    Infrared
Instructions
Tap a tile then a neighbour to swap them. Line up three electron jumps that land in one band.
_Source: Qallery verified question bank, Class 12 State Board, topic Atomic Structure_

Open this exercise →

How to practise

  1. Choose a Atoms and Nuclei question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Atoms and Nuclei practice for ISC Class 12. Read explanations as you go. No signup form needed to start.

Practise Atoms and Nuclei →

More Physics topics

Moving Charges and MagnetismCurrent ElectricityElectromagnetic Induction & Alternating CurrentSemiconductor ElectronicsRay Optics and Optical InstrumentsElectromagnetic WavesDual Nature of Radiation and MatterElectric Charges and Fields