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Based on the answers you didn't get right, here are reviews

1. For Question #1:
   Bitcoin miners get a reward for mining a block (a block = a ledger of transaction data). The current reward is 12.5 bitcoins. Unless you have free electricity and own thousands of powerful computers, don't bother trying to mine. Better to try and mine gold in your backyard instead and lose less money.
2. For Question #2:
   Bitcoin transactions are stored and transferred using a distributed ledger on a peer-to-peer network that is open, public and anonymous. Blockchain is the underpinning technology that maintains the Bitcoin transaction ledger. Neo would be proud.
3. For Question #3:
   When bitcoin was first created, its starting price was only $0.001. If you had bought $100 worth of bitcoins then, you'd now be sitting on $800,000,000 (assuming BTC/USD's recent price of $8,000). But since you're taking this quiz, it means you didn't buy $100 worth of bitcoins. Too bad.
4. For Question #4:
   The total number of bitcoins in the world is limited to 21 million. About 17 million have already been mined, An estimated 25-30% of mined bitcoins are considered "dead". That's over 4 million bitcoins that are lost forever and will never be used. Sad.
5. For Question #5:
   A blockchain is a decentralized and distributed digital ledger that is used to record transactions across many computers.
6. For Question #6:
   Silk Road was an online marketplace where users can purchase everything (using bitcoin) from illegal drugs to unlicensed firearms. It is hosted on the “Deep Web,” a collection of websites that are not indexed by search engines and thus hidden from public view.
7. For Question #7:
   Like gold, bitcoin has a limited and finite supply. Only 21 million bitcoins can be mined in total. Unlike gold though, you can't store bitcoins in a treasure chest.
8. For Question #8:
   On May 22, 2010, a programmer, named Laszlo Hanyecz, paid a fellow forum user 10,000 BTC for two Papa John’s pizzas. Now widely recognized as the first real-world transaction with bitcoin, May 22nd is now celebrated as "Bitcoin Pizza Day" by cryptocurrency enthusiasts. Makes you wonder though... if 20,000 BTC were sent, would pizzas be ordered from Pizza Hut instead? We'll never know.
9. For Question #9:
   The exact identity of Satoshi Nakamoto is still unknown. But...the truth is out there.
10. For Question #10:
    Bitcoin is pseudonymous, decentralized and immutable (can't be counterfeited).