NEET Chemistry: Structure of Atom — MCQ Test 3

Q6. An atom has an electronic configuration of \( 1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 \). What is its atomic number?

Q7. The energy of an electron in the first orbit of \( \text{Li}^{2+} \) is \( -122.4 \, \text{eV} \). What is the ionization energy from the third orbit? (\( 1 \, \text{eV} = 1.6 \times 10^{-19} \, \text{J} \))

Q8. A photon of wavelength \( 250 \, \text{nm} \) strikes a metal surface. The ejected electron has a de Broglie wavelength of \( 1.0 \times 10^{-9} \, \text{m} \). What is the work function of the metal? (\( h = 6.626 \times 10^{-34} \, \text{J s} \), \( c = 3.0 \times 10^8 \, \text{m s}^{-1} \), \( m_e = 9.1 \times 10^{-31} \, \text{kg} \))

Q9. An atom has 26 protons, 30 neutrons, and 24 electrons. What is its net charge?

Q10. Which of the following particles has the smallest de Broglie wavelength if all move at the same speed?

NEET Chemistry — Structure of Atom

Free MCQ Test 3 of 20

15:00

Sign in to save your score and view detailed explanations

Sign In Free
1Question 1 of 10
Medium

A proton has a de Broglie wavelength of \( 1.5 \times 10^{-12} \, \text{m} \). What is its kinetic energy? (\( h = 6.626 \times 10^{-34} \, \text{J s} \), \( m_p = 1.67 \times 10^{-27} \, \text{kg} \))

More Sets — Structure of Atom

MCQ Test 110 MCQsMCQ Test 210 MCQsMCQ Test 310 MCQsMCQ Test 410 MCQsMCQ Test 510 MCQsMCQ Test 610 MCQsMCQ Test 710 MCQsMCQ Test 810 MCQsMCQ Test 910 MCQsMCQ Test 1010 MCQsMCQ Test 1110 MCQsMCQ Test 1210 MCQsMCQ Test 1310 MCQsMCQ Test 1410 MCQsMCQ Test 1510 MCQsMCQ Test 1610 MCQsMCQ Test 1710 MCQsMCQ Test 1810 MCQsMCQ Test 1910 MCQsMCQ Test 2010 MCQs

Accelerate Your NEET Preparation

Access our comprehensive suite of tools designed to help you master Chemistry and ace your medical entrance exam.

Question Bank

50,000+ detailed solved MCQs covering every concept.

Practice Tests

Chapter-wise timed mock tests to build speed and accuracy.

NEET PYQs

Previous Year Questions spanning the last 15 years.

AI Analytics

Deep insights into your weak areas and test performance.

Previous Chapter

Some Basic Concepts Of Chemistry

Next Chapter

The D And F Block Elements

Explore individual Chemistry questions →

5,000+ questions with detailed solved answers in our Question Bank

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
Easy
10
Medium
0
Hard

Key concepts covered in this specific test include Wavelength, Neutrons, Threshold, Stopping, Potential, and Irradiated.

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. A proton has a de Broglie wavelength of \( 1.5 \times 10^{-12} \, \text{m} \). What is its kinetic energy? (\( h = 6.626 \times 10^{-34} \, \text{J s} \), \( m_p = 1.67 \times 10^{-27} \, \text{kg} \))

  • A. \( 2.918 \times 10^{-17} \, \text{J} \)
  • B. \( 8.756 \times 10^{-17} \, \text{J} \)
  • C. \( 3.975 \times 10^{-17} \, \text{J} \)
  • D. \( 5.837 \times 10^{-17} \, \text{J} \)

Q2. How many neutrons are present in an atom with atomic number 19 and mass number 39?

  • A. 20
  • B. 19
  • C. 39
  • D. 58

Q3. A metal has a threshold wavelength of \( 500 \, \text{nm} \). What is the stopping potential when irradiated with light of wavelength \( 400 \, \text{nm} \)? (\( h = 6.626 \times 10^{-34} \, \text{J s} \), \( c = 3.0 \times 10^8 \, \text{m s}^{-1} \), \( e = 1.6 \times 10^{-19} \, \text{C} \))

  • A. \( 1.24 \, \text{V} \)
  • B. \( 0.621 \, \text{V} \)
  • C. \( 2.48 \, \text{V} \)
  • D. \( 0.31 \, \text{V} \)

Q4. A proton and an alpha particle have the same de Broglie wavelength. What is the ratio of their velocities? (\( m_p = 1.67 \times 10^{-27} \, \text{kg} \), \( m_{\alpha} = 6.64 \times 10^{-27} \, \text{kg} \))

  • A. 2
  • B. 4
  • C. 1
  • D. 0.25

Q5. How many electrons in an atom can have the quantum numbers \( n = 5 \) and \( l = 2 \)?

  • A. 14
  • B. 10
  • C. 6
  • D. 8

+ 5 more questions in the actual test

Frequently Asked Questions

Is this practice set completely free?

Yes, all our chapter-wise practice sets are 100% free. You can practice as many times as you want without any hidden charges.

Are these questions relevant for the latest NEET syllabus?

Absolutely. Our content team regularly updates the question bank to strictly align with the latest NTA NEET syllabus and NCERT textbooks.

Can I view the solutions after the test?

Yes, once you submit the test, you will get an instant scorecard along with the correct answers and detailed explanations for every question.

About TopperSquare

TopperSquare is India's most advanced, student-centric learning platform designed specifically for medical and engineering aspirants. Our mission is to democratize high-quality education by providing premium practice materials, deep performance analytics, and structured test series.

Whether you are starting your preparation or giving final touches before the exam day, TopperSquare equips you with the right tools—from chapter-wise tests to full-length mock exams—to help you achieve your dream rank.

More Chemistry Chapters for NEET

• Alcohols Phenols And Ethers• Aldehydes Ketones And Carboxylic Acids• Amines• Biomolecules• Chemical Bonding And Molecular Structure• Chemical Kinetics• Classification Of Elements And Periodicity In Properties• Coordination Compounds• Electrochemistry• Equilibrium• Haloalkanes And Haloarenes• Hydrocarbons• Organic Chemistry Some Basic Principles And Techniques• Redox Reactions• Solutions• Some Basic Concepts Of Chemistry• Structure Of Atom• The D And F Block Elements• Thermodynamics

Explore More NEET Subjects

Looking to strengthen other areas of your preparation? Check out our free chapter-wise question banks for all NEET subjects:

NEET biologyNEET chemistryNEET physicsAll NEET Questions

Why 32,000+ students choose TopperSquare

Everything you need to crack NEET

15,000+ Chapter MCQs

Physics, Chemistry, Biology — chapter-wise, topic-wise practice

AI Performance Analytics

Know your weak topics. Get a personalised study plan.

Full NEET Mock Tests

180 questions, timed, with detailed score analysis

PYQ Sets 2010–2024

15 years of past papers with solved explanations

Start Practising Free

No credit card · 30-second signup · Free forever plan included