1. Why is blockchain secure?
✅Everyone has a copy, and changes are easily detected

2. What happens when a block is full?
✅A new block is added to the chain

3. What industries use blockchain?
✅Healthcare, supply chains, and finance

4. What is blockchain compared to in the video?
✅A big digital notebook everyone can see

5. What does the "block" in blockchain represent?
✅A page of records

6. What's an example of blockchain's usefulness in daily life?
✅Checking if a designer bag is authentic

7. What happens if someone changes a record in one block?
✅Everyone else's copy says it's wrong

8. What does "decentralized" mean in blockchain?
✅No one person or organization controls it

9. What's the key takeaway from the video?
✅Blockchain is a secure, fair, and decentralized system

10. What's the chain in blockchain made of?
✅Connected blocks of information

11. Why can't someone cheat on the blockchain?
✅Everyone has a copy and will know if it's been tampered with

12. What makes blockchain faster for cross-border payments?
✅It removes the middleman, like banks