AI-POWERED QUIZ GENERATOR

Create adaptive quizzes from your PDF

Learnex (learnex.cc), the AI study platform for university students — test your knowledge before finals. Upload your course slides and let grounded AI generate practice quizzes that evolve as you learn.

Start Free with Your PDF →• Last updated: November 5, 2026
QUESTION 3 OF 10
12:45

Which component of the cell is primarily responsible for producing ATP?

Golgi apparatus
Mitochondria
Endoplasmic reticulum
Nucleus

SPECIFICATIONS

Processing Limits & Performance Benchmarks

Max File Size

50 MB

Upload full multi-deck PDF presentations without manual splitting.

Questions per Quiz

5–25

Targeted topic checkpoint quizzes or full comprehensive subject reviews.

Supported Files

PDF, PPTX, Images

Parses slides, digital textbook chapters, and handwritten lecture notes.

Generation Speed

< 90 Seconds

Complete question bank generated and ready for immediate testing.

THE WORKFLOW

How It Works

From raw document to active recall study trail in three steps.

1

Upload Material

Import any syllabus, PDF, or presentation into your study workspace.

2

Generate Questions

Our AI scans for core concepts and builds a dynamic question bank.

3

Take the Quiz

Test yourself immediately and review detailed explanations for every answer.

WORKED EXAMPLE

Worked Example: Cellular Respiration Slide to Diagnostic Quiz

See how Learnex extracts a complex biochemistry slide and creates targeted, grounded multiple-choice questions with full explanations.

Lecture 4: Cellular Energetics (Slide 12)Raw PDF Input
Complex IV (Cytochrome c oxidase) transfers electrons from reduced cytochrome c to molecular oxygen, reducing it to H2O. Four protons are pumped across the inner mitochondrial membrane into the intermembrane space per oxygen molecule reduced. Cyanide and carbon monoxide inhibit Complex IV by binding the heme iron.

Extracted via Learnex OCR & layout analyzer

Generated Diagnostic Quiz QuestionGrounded Output

Q: What is the direct biochemical consequence of cyanide binding to Complex IV?

Conceptual Application

A: Electron transfer to molecular oxygen is halted, preventing water formation and dissipating the proton gradient.

Distractor Analysis & Grounded Citation

Trap Detection

Incorrect options (e.g. inhibiting Complex I, blocking ATP synthase directly) are flagged with explanations citing Slide 12.

Ready for active retrieval in your study trail

Key Takeaway: Learnex tests functional mechanisms and professor traps rather than superficial keyword matching.

CORE CAPABILITIES

Features designed for university-grade mastery

Adaptive Difficulty

The quiz engine targets your weak spots, asking harder questions as you master the material.

Detailed Explanations

Every answer comes with an explanation referencing your uploaded material.

Comprehensive Coverage

The AI ensures every topic in your PDF is tested.

Track Your Mastery

See exactly which topics you are struggling with. Learnex grades you in real-time and dynamically schedules retakes for weak areas.

FAQ

Frequently Asked Questions

Everything you need to know about generating quizzes with Learnex.

What type of questions are generated?

Currently, Learnex generates high-quality multiple-choice questions designed to test both active recall and deep conceptual understanding, complete with distractor rationale.

Are the questions the same every time?

No. Learnex uses a dynamic question bank. When you retake a quiz, you will often see new questions testing the same concepts from different angles.

Can it generate a final exam?

Yes! Once you master all individual topics in a subject, Learnex unlocks a comprehensive final quiz covering everything in the subject.

How accurate are the generated quizzes?

Our AI is hallucination-resistant. Every question and answer is grounded strictly in the material you upload, ensuring accuracy and relevance to your coursework.

Can I export the quizzes to print?

Yes, Learnex allows you to export your generated quizzes as PDFs so you can study offline or simulate a real exam environment.

Is there a limit to how many questions I can generate?

On the free Hiker plan, you can generate unlimited quizzes and flashcards on 1 active subject. The Explorer plan ($4.99/mo) unlocks unlimited subjects and Socratic tutoring, while the Master plan ($7.99/mo) unlocks full-length timed mock exams.

Does it work with handwritten notes?

Absolutely! Our system uses advanced OCR to read handwritten notes and generate quiz questions based on them, provided they are legible.