Top 100 Manual Testing Interview Questions – Complete Job-Preparation Guide

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Introduction: Why Candidates Search for Top 100 Manual Testing Interview Questions

When preparing for a QA interview, most candidates type one thing into Google: top 100 manual testing interview questions. 

Why Do Candidates Search for Top 100 Manual Testing Interview Questions? 

Interviews do not follow a fixed pattern. Interviewers can ask anything—from basic concepts to real-time scenarios—depending on your experience level. 

Candidates search for top 100 manual testing interview questions because they want: 

  • One complete place to revise everything  
  • Confidence before interviews  
  • Coverage of interview questions for QA, not just theory  
  • Exposure to real-time manual testing questions  

A complete question set helps candidates prepare different interview styles and experience levels. 

Who Can Use This Guide? 

Whether you are: 

  • A fresher  
  • A junior tester  
  • An experienced QA professional  

this guide helps you prepare effectively for QA interviews. 

What This Guide Helps You Revise 

This guide helps you revise: 

  • Fundamentals  
  • Scenario-based questions  
  • Real company interview round questions  
  • Best answers to manual testing interview questions  

These topics are commonly asked in software testing interviews. 

What is Manual Testing? (Simple Definition with Example) 

Manual Testing is the most fundamental approach in the Software Testing Life Cycle (STLC). It is the process of manually testing software applications without the use of automation tools. The tester acts as the end-user and validates whether the software behaves as expected. Despite the growth of automation testing, manual testing remains essential because it helps in identifying usability issues, visual inconsistencies, and unexpected behavior that automation tools may miss.  

In this article, we’ll cover the basics of manual testing, different types of manual testing, and examples to understand how it works in real-life projects.  

Basics of Manual Testing  

Manual Testing focuses on ensuring that the application is functioning correctly based on the given requirements. Here are the core fundamentals:  

1. No Automation Tools Used  

Testers execute test cases manually, step by step.  

Tools like JIRA, Bugzilla, and Trello are used for tracking defects, but execution is done without code/scripts.  

2. End-User Perspective  

The tester plays the role of the actual user.  

Validates both functionality and user experience.  

3. Test Documentation  

Includes Test Plan, Test Cases, Test Scenarios, and Bug Reports.  

Example of a simple test case format:  

4. Validation and Verification  

Verification: Making sure the product is constructed appropriately (in accordance with specifications).  

Validation: Making sure the appropriate product is created for the final consumer.  

Manual Testing Types  

Depending on the requirements of the project, manual testing uses a variety of testing techniques. The most typical kinds are listed below:  

1. Unit Testing  

Performed individual components or modules.  

Developers usually do it, but manual testers may validate test data.  

2. Integration Testing  

ensures to work together two or more units.  

Example: Testing that the user dashboard and login page work together.  

3. System Testing  

validates the application as a whole.  

An e-commerce app’s overall testing, from login to checkout, is an example.  

4. Smoke Testing  

Build Verification Testing be another word on it.  

A quick check to make sure the fundamental features are operational.  

For example, checking if an app installs correctly and opens without crashing.  

5. Sanity Testing  

narrow and targeted testing after small changes.  

Example: The tester only rechecks login after resolving a login bug.  

6. Regression Testing  

ensures that new changes do not cause problems with existing features.  

Example: The tester rechecks the dashboard and login after adding an “Forgot Password” feature.  

7. Usability Testing  

emphasizes experience and user-friendliness.  

Example: Verifying that the “Sign Up” button is accessible and visible.  

8. Acceptance Testing  

This is done to confirm that the application satisfies business needs.  

often carried out during the User Acceptance Testing (UAT) stage.  

9. Exploratory Testing  

No predefined test cases; the tester explores the app.  

Helps in finding unexpected defects.  

10. Ad-hoc Testing  

informal testing that is not recorded.  

Example: Randomly trying invalid inputs to check system stability.  

Instances of Manual Testing in Actual Projects  

Example 1: Testing a Login Page  

Scenario: A banking application login page.  

Test Cases:  

Enter correct username & password → Should login successfully.  

Enter wrong password → Should show error message.  

Leave fields empty → Should not allow login.  

Check “Forgot Password” link → Should redirect properly.  

Example 2: E-Commerce Checkout Flow  

Scenario: Online shopping cart.  

Test Cases:  

Add items to cart → Items should be reflected in cart.  

Apply discount coupon → Correct discount applied.  

Enter invalid credit card → Show payment error.  

Successful payment → Generate order confirmation email.  

Example 3: Social media mobile app testing scenario.  

Test Cases:  

App installation on Android & iOS.  

Navigation in portrait & landscape mode.  

Upload image/video functionality.  

push alerts and notifications. 

Why Companies Ask Manual Testing Interview Questions 

1. Real project exposure  

They want to know: Have you actually worked on real applications?  

Not just theory. You should be able to explain:  

  • What project you worked on   
  • What features you tested   
  • What problems you faced  
    Basically: “Have you seen real bugs, real deadlines, real pressure?”   

2. Defect analysis and communication  

Not just finding bugs — but:  

  • Can you understand why the bug happened?   
  • Can you explain it clearly to developers without confusion or fights?  
    Good QA = clear communicator, not just bug reporter.   

3. Test planning ability  

They expect you to think ahead:  

  • What should be tested first?   
  • What can be skipped if there is less time?   
  • What is critical vs optional?  
    This shows you’re not blindly testing — you’re thinking.   

4. Ownership mindset  

This is very important.  

Instead of saying: “I tested my part”, you should think:  

  • “Is this feature really ready for user?”   
  • “Did we miss any edge cases?”  
    You act like the feature is your responsibility, not just a task.   

5. Risk-based testing skills  

You won’t have time to test everything. So:  

  • Focus on high-risk areas (payments, login, core features)   
  • Less focus on low-impact areas  
    This shows maturity and smart decision-making.  

At this level, companies expect you to act like a feature owner, not a test executor. 

Real Workplace Angle 

In real projects: 

  • Requirements are unclear 
     
  • Developers push urgent fixes 
     
  • Clients change expectations 

Interviewers want testers who can think practically, not just reciting definitions. 

Top 100 Manual Testing Interview Questions (With Short Answers) 

Below is a carefully curated list of top 100 manual testing interview questions, grouped for easy revision. 

A. Basic Manual Testing Interview Questions (1–20) 

  1. What is software testing? 
     
  1. What is manual testing? 
     
  1. Why is testing required? 
     
  1. What is a bug/defect? 
     
  1. What is the test case? 
     
  1. What is the test scenario? 
     
  1. Difference between verification and validation 
     
  1. What is STLC? 
     
  1. What is smoke testing? 
     
  1. What is sanity testing? 
     
  1. What is regression testing? 
     
  1. What is retesting? 
     
  1. Difference between severity and priority 
     
  1. What is black box testing? 
     
  1. What is white box testing? 
     
  1. What is exploratory testing? 
     
  1. What is UAT? 
     
  1. What is functional testing? 
     
  1. What is non-functional testing? 
     
  1. What is test data? 
     

B. STLC & Process-Based Questions (21–35) 

  1. Explain STLC phases 
     
  1. What is test planning? 
     
  1. What is a test plan? 
     
  1. What is entry and exit criteria? 
     
  1. What is test execution? 
     
  1. What is defect lifecycle? 
     
  1. What is the test closure? 
     
  1. What is the requirement analysis? 
     
  1. What is the traceability matrix? 
     
  1. What is test coverage? 
     
  1. What is defect leakage? 
     
  1. What is defect density? 
     
  1. What is the test environment? 
     
  1. What is the baseline? 
     
  1. What is configuration management? 
     

C. Test Case & Defect Questions (36–50) 

  1. How do you write test cases? 
     
  1. What makes a good test case? 
     
  1. Difference between test case and test scenario 
     
  1. What is a bug report? 
     
  1. What details are included in a bug report? 
     
  1. What is bug severity vs priority with example? 
     
  1. What is a rejected defect? 
     
  1. What is a deferred defect? 
     
  1. What is a reopened defect? 
     
  1. What is a duplicate defect? 
     
  1. How do you handle developer conflicts? 
     
  1. What is defect aging? 
     
  1. What is defect triage? 
     
  1. What is root cause analysis? 
     
  1. What is a bug tracking tool? 
     

D. Real-Time Manual Testing Questions (51–70) 

  1. How do you test a login page? 
     
  1. What will you do if requirements are unclear? 
     
  1. How do you prioritize test cases? 
     
  1. How do you test without test cases? 
     
  1. What do you do if time is limited? 
     
  1. How do you ensure test coverage? 
     
  1. How do you handle production bugs? 
     
  1. How do you test new features? 
     
  1. How do you support UAT? 
     
  1. What if a bug is found before it is released? 
     
  1. What if the developer says, “not a bug”? 
     
  1. How do you test negative scenarios? 
     
  1. How do you test error messages? 
     
  1. How do you test validations? 
     
  1. How do you test data integrity? 
     
  1. How do you test UI? 
     
  1. How do you test APIs manually (basic)? 
     
  1. How do you test browser compatibility? 
     
  1. How do you test performance manually? 
     
  1. How do you test security manually? 
     

E. Advanced & Experience-Based Questions (71–85) 

  1. What challenges have you faced as a tester? 
     
  1. How do you handle tight deadlines? 
     
  1. How do you manage multiple releases? 
     
  1. What metrics do you track? 
     
  1. What is risk-based testing? 
     
  1. How do you handle frequent requirement changes? 
     
  1. How do you mentor junior testers? 
     
  1. How do you estimate testing effort? 
     
  1. How do you improve the testing process? 
     
  1. What is the release sign-off? 
     
  1. What is the acceptance criteria? 
     
  1. What is defect prevention? 
     
  1. What is quality assurance vs quality control? 
     
  1. What is shift-left testing? 
     
  1. What is Agile testing? 
     

F. Scenario-Based Questions (86–100) 

  1. Login button not working 
     
  1. Application crashes after submit 
     
  1. Data not saved after refresh 
     
  1. Payment successful but order not created 
     
  1. App slow during peak hours 
     
  1. Session expires suddenly 
     
  1. Duplicate records created 
     
  1. Email notification not received 
     
  1. App works in Chrome but not Firefox 
     
  1. Error message incorrect 
     
  1. Broken links found 
     
  1. Cart items disappear 
     
  1. File upload fails 
     
  1. App logs out user automatically 
     
  1. Feature works for some users only 
     

Scenario-Based Manual Testing Interview Questions (Detailed Examples) 

1. Login Button Not Working 

Check: 

  • UI clicks  
  • Browser console  
  • Network calls  

Brief Explanation 

The tester should verify whether the button is clickable, check out browser console errors, and confirm whether network or API requests are triggered correctly. 

2. Payment Success but Order Missing 

Check: 

  • Backend logs  
  • Database entries  
  • Order service  

Brief Explanation 

The tester should verify whether the payment was completed successfully and identify why the order creation process failed. 

3. Data Lost After Refresh 

Verify: 

  • Save functionality  
  • Session handling  

Brief Explanation 

The tester should confirm whether the data is stored properly before refresh and whether session handling is functioning correctly. 

4. App Slow 

Observe: 

  • Response time  
  • Performance issues  

Brief Explanation 

The tester should analyze application response time and identify possible server, database, or network-related performance issues. 

5. Browser-Specific Issue 

Perform: 

  • Compatibility testing  

Brief Explanation 

The tester should verify whether the application behaves consistently across different browsers and identifies browser-specific issues. 

Real Company Interview Round Format + Preparation Tips 

Typical Interview Rounds 

1. HR Round 

This round evaluates: 

  • Communication skills  
  • Confidence  
  • Career goals  
  • Teamwork attitude  

2. Top Manual Testing Questions 

Interviewers ask questions related to: 

  • Testing fundamentals  
  • STLC  
  • Defect lifecycle  
  • Testing types  

These questions test conceptual understanding. 

3. Scenario-Based Questions 

This round focuses on: 

  • Practical problem-solving  
  • Real-time thinking  
  • Testing approach  

Candidates should explain scenarios clearly. 

4. Real-Time Manual Testing Questions 

Interviewers evaluate: 

  • Project experience  
  • Defect handling  
  • Production issue management  
  • Decision-making ability  

Real examples improve answer quality. 

Preparation Tips 

Important Tips for QA Interviews 

  • Revise basics first  
  • Practice scenarios aloud  
  • Use simple explanations  
  • Be honest and confident  

Regular practice helps improve communication and confidence. 

How to Answer Manual Testing Interview Questions Like a Pro 

Best Framework 

A strong answer should include: 

  1. Define the concept  
  1. Give a real example  
  1. Explain real-time usage  

This structure makes answers more practical and professional. 

Example Answer 

“Regression testing ensures existing features work after changes. For example, after fixing the login functionality, I test signup and dashboard features to ensure no existing functionality is affected.” 

This type of answer demonstrates: 

  • Concept clarity  
  • Practical understanding  
  • Real-time testing knowledge  

Common Mistakes Candidates Make 

Mistakes to Avoid 

  • Memorizing answers  
  • Not explaining logic  
  • Ignoring scenarios  
  • Poor communication  
  • Overconfidence  

Interviewers prefer practical and well-structured explanations. 

Final Revision Sheet – Quick Prep 

Must-Revise Topics 

  • Manual testing basics  
  • STLC  
  • Test cases and defects  
  • Scenario-based questions  
  • Real-time examples  

These topics are commonly asked in QA interviews and should be revised regularly before interviews. 

FAQs – Top 100 Manual Testing Interview Questions 

Q1. Are these enough to crack interviews? 
These questions and concepts provide a very strong foundation for QA interviews, but cracking interviews also depends on how confidently and practically you explain your answers. 

Preparing only questions is not enough. Interviewers also evaluate: 

  • Communication skills  
  • Logical thinking  
  • Real-time problem-solving ability  
  • Project understanding  
  • Confidence during discussion 

Q2. Are scenario-based questions mandatory? 
Yes, scenario-based questions are almost mandatory in most QA and manual testing interviews today. 

Companies use these questions to evaluate how candidates handle real-time testing situations instead of only checking theoretical knowledge. 

Why Interviewers Ask Scenario-Based Questions 

Interviewers ask scenario-based questions to check: 

  • Logical thinking ability  
  • Problem-solving skills  
  • Real-time testing knowledge  
  • Decision-making approach  
  • Communication skills  

These questions help companies understand how you would work on actual projects. 

Q3. Is automation needed? 
Automation is not mandatory for QA jobs, but it is increasingly becoming a necessity. As companies continue to prioritize mechanization in their testing processes, the demand for skilled experts in this sector is expected to rise. Automation testers typically advance into automation roles, which generally show faster salary progression due to the technical depth and demand for hybrid testing-development expertise.       

Q4. Are these suitable for freshers? 
Yes, these questions are very suitable for freshers preparing for QA and manual testing interviews. 

Most companies ask a combination of: 

  • Manual testing basics  
  • Scenario-based questions  
  • Real-time testing questions  
  • Communication-based questions  

Even freshers are expected to understand practical testing approaches. 

Q5. How long should I prepare? 
The preparation time depends on your current knowledge, experience level, and daily practice. However, many candidates can build a good foundation in a few weeks with consistent preparation. 

Recommended Preparation Time 

For Freshers 

Freshers usually need around: 

  • 4 to 8 weeks of consistent preparation  

This helps cover: 

  • Manual testing basics  
  • STLC and defect lifecycle  
  • Scenario-based questions  
  • Real-time interview questions  
  • Project explanation and communication skills  

Daily practice is more important than studying for long hours occasionally. 

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