Test your knowledge with this GK Quiz on Cryptocurrency. MCQs with answers, explanations, basics of Bitcoin, blockchain, wallets, and crypto terms.
GK Quiz on Cryptocurrency (With Answers & Explanations)
Cryptocurrency is transforming the global financial system by introducing digital, decentralized, and borderless money. This GK Quiz on Cryptocurrency is designed to strengthen your foundational knowledge in a simple, engaging, and exam-oriented way.
The questions cover:
- Origins of cryptocurrency
- Core technology and working principles
- Major cryptocurrencies and terms
- Real-world applications and global adoption
Each question includes a short explanation so you understand the concept, not just memorize facts.
1. Who is credited with creating Bitcoin?
a) Elon Musk
b) Satoshi Nakamoto
c) Vitalik Buterin
d) Bill Gates
Answer: b) Satoshi Nakamoto
Explanation: Satoshi Nakamoto is the pseudonymous creator of Bitcoin, who introduced it in 2008 through a whitepaper describing a peer-to-peer electronic cash system.
2. In which year was Bitcoin launched?
a) 2005
b) 2008
c) 2009
d) 2012
Answer: c) 2009
Explanation: Bitcoin officially launched in January 2009 when the Genesis Block (the first block of the blockchain) was mined.
3. What technology powers cryptocurrencies?
a) Cloud computing
b) Blockchain
c) Artificial Intelligence
d) Data mining
Answer: b) Blockchain
Explanation: Blockchain is a distributed digital ledger that records transactions securely across multiple computers, making data tamper-resistant.
4. What is the process of verifying cryptocurrency transactions called?
a) Mining
b) Printing
c) Encoding
d) Signing
Answer: a) Mining
Explanation: Mining involves validating transactions and adding them to the blockchain while earning cryptocurrency rewards.
5. Which cryptocurrency is known as the second largest after Bitcoin?
a) Ripple
b) Ethereum
c) Litecoin
d) Dogecoin
Answer: b) Ethereum
Explanation: Ethereum is the second-largest cryptocurrency and introduced smart contracts, expanding blockchain beyond digital payments.
6. What is a crypto wallet primarily used for?
a) Storing physical coins
b) Storing private keys
c) Mining coins
d) Printing currency
Answer: b) Storing private keys
Explanation: A crypto wallet stores private keys, which are needed to access, send, and manage cryptocurrencies.
7. What does decentralization mean in cryptocurrency?
a) Controlled by one bank
b) Managed by governments
c) No central authority
d) Printed physically
Answer: c) No central authority
Explanation: Cryptocurrencies operate on peer-to-peer networks without control by banks or governments.
8. What is the smallest unit of Bitcoin called?
a) Microbit
b) Satoshi
c) Nano coin
d) Crypto cent
Answer: b) Satoshi
Explanation: One Bitcoin can be divided into 100 million units, each called a satoshi.
9. What is a smart contract?
a) A legal document
b) A blockchain-based automated agreement
c) A bank contract
d) A trading license
Answer: b) A blockchain-based automated agreement
Explanation: Smart contracts automatically execute actions when predefined conditions are met, without intermediaries.
10. Which country made Bitcoin legal tender in 2021?
a) Japan
b) USA
c) El Salvador
d) Germany
Answer: c) El Salvador
Explanation: El Salvador became the first country in the world to adopt Bitcoin as official legal tender.
11. What does ?HODL? mean in cryptocurrency?
a) Sell immediately
b) Trade daily
c) Hold cryptocurrency long-term
d) Mine faster
Answer: c) Hold cryptocurrency long-term
Explanation: HODL originated from a misspelled word ?hold? and now refers to long-term investment strategy.
12. Which of the following is a stablecoin?
a) Bitcoin
b) Ethereum
c) Tether
d) Dogecoin
Answer: c) Tether
Explanation: Stablecoins are cryptocurrencies pegged to stable assets like the US dollar to reduce volatility.
13. What is ?Fiat Currency??
a) Digital currency
b) Cryptocurrency
c) Government-issued money
d) Virtual gaming money
Answer: c) Government-issued money
Explanation: Fiat currency is traditional money like the Indian Rupee or US Dollar, backed by governments.
14. What does ?ICO? stand for in cryptocurrency?
a) Initial Coin Offering
b) International Crypto Order
c) Internet Coin Operation
d) Instant Currency Option
Answer: a) Initial Coin Offering
Explanation: ICOs are fundraising methods where new cryptocurrencies sell tokens to investors.
15. What is ?Gas Fee? in Ethereum?
a) Mining tax
b) Wallet charge
c) Transaction processing fee
d) Exchange fee
Answer: c) Transaction processing fee
Explanation: Gas fees are paid to process and validate transactions on the Ethereum blockchain.
16. Which term refers to a copy of the blockchain with rule changes?
a) Fork
b) Node
c) Wallet
d) Hash
Answer: a) Fork
Explanation: A fork occurs when blockchain rules change, creating a new version of the blockchain.
17. What is a ?Node? in blockchain?
a) Mining machine
b) Exchange platform
c) Computer validating transactions
d) Wallet address
Answer: c) Computer validating transactions
Explanation: Nodes help maintain the blockchain by verifying and relaying transactions.
18. Which cryptocurrency is known for fast and low-cost transactions?
a) Bitcoin
b) Litecoin
c) Ethereum
d) Bitcoin Cash
Answer: b) Litecoin
Explanation: Litecoin was designed to process transactions faster than Bitcoin.
19. What does ?NFT? stand for?
a) New Financial Token
b) Non-Fungible Token
c) Network Fund Transfer
d) Non-Fixed Token
Answer: b) Non-Fungible Token
Explanation: NFTs represent unique digital assets, unlike cryptocurrencies which are interchangeable.
20. What is the main risk associated with cryptocurrency investment?
a) Inflation
b) High volatility
c) Low liquidity
d) Government printing
Answer: b) High volatility
Explanation: Cryptocurrency prices can rise or fall sharply in a short time, making them risky investments.
Final Note
Cryptocurrency represents a major shift in how people think about money, technology, and financial independence. For competitive exams, interviews, and general awareness, understanding its basic concepts, terms, and global developments is essential.
Frequently Asked Questions (FAQ)
Q1. What is a cryptocurrency?
Cryptocurrency is a digital or virtual currency secured by cryptography and based on blockchain technology, making it decentralized and transparent.
Q2. Who created Bitcoin?
Bitcoin was created by a pseudonymous person or group known as Satoshi Nakamoto.
Q3. What is blockchain technology?
Blockchain is a distributed digital ledger that records transactions securely across multiple computers without a central authority.
Q4. Why is cryptocurrency important for GK exams?
Cryptocurrency is a trending topic in current affairs, economics, and technology, frequently asked in UPSC, SSC, Banking, and State exams.
Q5. Which country adopted Bitcoin as legal tender?
El Salvador became the first country to adopt Bitcoin as legal tender in 2021.