NEET Chemistry: Structure of Atom — MCQ Test 4

Q6. A metal has a threshold frequency of \( 5.5 \times 10^{14} \, \text{Hz} \). What is the stopping potential when irradiated with light of frequency \( 8.0 \times 10^{14} \, \text{Hz} \)? (\( h = 6.626 \times 10^{-34} \, \text{J s} \), \( e = 1.6 \times 10^{-19} \, \text{C} \))

Q7. The ionization energy of \( \text{Be}^{3+} \) from its ground state is how many times that of a hydrogen atom? (\( E_H = 13.6 \, \text{eV} \))

Q8. What is the wavenumber of light emitted when an electron in a hydrogen atom transitions from \( n = 4 \) to \( n = 2 \)? (\( R_H = 1.097 \times 10^7 \, \text{m}^{-1} \))

Q9. Which particle has the highest charge-to-mass ratio?

Q10. The angular momentum of an electron in the sixth orbit of \( \text{Li}^{2+} \) is \( 6.33 \times 10^{-34} \, \text{J s} \). What is its radius? (\( h = 6.626 \times 10^{-34} \, \text{J s} \), \( r_1 \) for H = \( 5.29 \times 10^{-11} \, \text{m} \))

NEET Chemistry — Structure of Atom

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The frequency of a photon emitted during a transition from n=6n = 6 to n=3n = 3 in a hydrogen atom is: (E1=−2.18×10−18 JE_1 = -2.18 \times 10^{-18} \, \text{J}, h=6.626×10−34 J sh = 6.626 \times 10^{-34} \, \text{J s})

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Chemistry preparation, focusing specifically on the chapter Structure of Atom. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

0
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10
Medium
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Key concepts covered in this specific test include Frequency, Transition, Hydrogen, Orbitals, Velocities, and Electron.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1.

The frequency of a photon emitted during a transition from n=6n = 6 to n=3n = 3 in a hydrogen atom is: (E1=−2.18×10−18 JE_1 = -2.18 \times 10^{-18} \, \text{J}, h=6.626×10−34 J sh = 6.626 \times 10^{-34} \, \text{J s})

  • A.

    2.741×1014 Hz2.741 \times 10^{14} \, \text{Hz}

  • B.

    3.291×1014 Hz3.291 \times 10^{14} \, \text{Hz}

  • C.

    1.645×1014 Hz1.645 \times 10^{14} \, \text{Hz}

  • D.

    4.935×1014 Hz4.935 \times 10^{14} \, \text{Hz}

Q2.

How many orbitals are present in the n=3n = 3 energy level of an atom?

  • A.

    9

  • B.

    4

  • C.

    16

  • D.

    25

Q3.

The ratio of the velocities of an electron in the first orbit of H\text{H} to the second orbit of He+\text{He}^+ is: (v1v_1 for H = 2.19×106 m s−12.19 \times 10^6 \, \text{m s}^{-1})

  • A.

    2

  • B.

    0.5

  • C.

    4

  • D.

    1

Q4.

The ionization energy of H\text{H} is 13.6 eV13.6 \, \text{eV}. What is the energy required to excite an electron in He+\text{He}^+ from n=2n = 2 to n=4n = 4?

  • A.

    13.6 eV13.6 \, \text{eV}

  • B.

    10.2 eV10.2 \, \text{eV}

  • C.

    40.8 eV40.8 \, \text{eV}

  • D.

    6.8 eV6.8 \, \text{eV}

Q5.

A hydrogen atom emits a photon of wavelength 410.2 nm410.2 \, \text{nm}. What is the energy difference between the initial and final states? (h=6.626×10−34 J sh = 6.626 \times 10^{-34} \, \text{J s}, c=3.0×108 m s−1c = 3.0 \times 10^8 \, \text{m s}^{-1})

  • A.

    3.026×10−19 J3.026 \times 10^{-19} \, \text{J}

  • B.

    6.626×10−19 J6.626 \times 10^{-19} \, \text{J}

  • C.

    4.847×10−19 J4.847 \times 10^{-19} \, \text{J}

  • D.

    2.423×10−19 J2.423 \times 10^{-19} \, \text{J}

+ 5 more questions in the actual test

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