(555+) Hard GK Questions with Answers in Hindi & English | Latest Quiz (2026)
Hard GK Questions with Answers are one of the best ways to test your knowledge and improve learning skills. General Knowledge (GK) is important for students, competitive exam aspirants, and quiz lovers because it helps to understand history, science, geography, politics, and world facts. Hard GK questions make the brain think deeper and give confidence in solving tough challenges. By practicing these tricky GK questions with answers, you can prepare well for school exams, interviews, and quiz competitions.
In this post, I have prepared some of the most difficult and famous GK questions with answers for kids that cover India as well as the world. These questions are useful for students from Class 1 to 12, and also for UPSC, SSC, Banking, Railway, and other competitive exams. Whether you want to study GK in English, Hindi, or Marathi, I have designed this content to guide you step by step. Let us explore some really tough GK questions with answers that will help you improve your knowledge and stay ahead.
Hard GK Questions with Answers (2025)
- Who is known as the Father of Physics?
Answer: Galileo - Which is the smallest country in the world?
Answer: Vatican - What is the currency of Japan?
Answer: Yen - Who wrote “Origin of Species”?
Answer: Darwin - Which is the fastest land animal?
Answer: Cheetah - What is the capital of Canada?
Answer: Ottawa - Who painted the Mona Lisa?
Answer: Da Vinci - Which planet is known as the Red Planet?
Answer: Mars - Which is the largest desert in the world?
Answer: Sahara - Who invented the telephone?
Answer: Bell - Which is the deepest ocean in the world?
Answer: Pacific - Who discovered penicillin?
Answer: Fleming - Which country is called the Land of the Rising Sun?
Answer: Japan - Which is the tallest mountain in the world?
Answer: Everest - Who was the first person to walk on the Moon?
Answer: Armstrong
Very Hard GK Questions with Answers
- Who was the first woman Prime Minister in the world?
Answer: Bandaranaike - Which element has the highest melting point?
Answer: Tungsten - Which is the only continent without reptiles?
Answer: Antarctica - Which country has the longest coastline in the world?
Answer: Canada - Which Indian mathematician’s work led to the discovery of zero?
Answer: Aryabhata - Which is the largest gland in the human body?
Answer: Liver - Who proposed the theory of relativity?
Answer: Einstein - Which is the longest bone in the human body?
Answer: Femur - Which is the national flower of Japan?
Answer: Cherry Blossom - Who was the first man to climb Mount Everest without oxygen?
Answer: Messner - Which country is known as the “Cockpit of Europe”?
Answer: Belgium - Which is the coldest inhabited place on Earth?
Answer: Oymyakon - What is the chemical name of baking soda?
Answer: Sodium Bicarbonate - Who was the first Indian to win a Nobel Prize?
Answer: Tagore - Which is the deepest trench in the world?
Answer: Mariana
Some Hard GK Questions with Answers
| Question | Answer |
|---|---|
| Who was the first Indian woman to climb Mount Everest? | Bachendri Pal |
| Which country gifted the Statue of Liberty to the USA? | France |
| What is the currency of South Korea? | Won |
| Who discovered radium? | Curie |
| Which is the largest plateau in the world? | Tibet |
| Which planet has the fastest rotation? | Jupiter |
| Who was the first Vice President of India? | Radhakrishnan |
| Which vitamin is produced in the body by sunlight? | Vitamin D |
| In which year did World War II end? | 1945 |
| Which city is called the “City of Canals”? | Venice |
| Who wrote the book Wealth of Nations? | Adam Smith |
| Which is the heaviest naturally occurring element? | Uranium |
| Which country is known as the Land of White Elephants? | Thailand |
| Who was the first person awarded the Bharat Ratna posthumously? | Lal Bahadur Shastri |
| Which gas is filled in electric bulbs? | Argon |
- Which is the longest river in the world? – Nile
- Who invented the World Wide Web (WWW)? – Tim Berners-Lee
- Which is the largest island in the world? – Greenland
- Who was the first Indian woman to win the Booker Prize? – Arundhati Roy
- What is the chemical symbol of Gold? – Au
- Which country is known as the Land of Midnight Sun? – Norway
- Who was the first Indian to travel in space? – Rakesh Sharma
- What is the national sport of Japan? – Sumo Wrestling
- Which is the smallest bone in the human body? – Stapes
- Who discovered electricity? – Benjamin Franklin
Hard GK Questions with Answers for Class 1 to 12
What is the national fruit of India?
Answer: Mango
Which is the smallest state in India by area?
Answer: Goa
Who was the first President of India?
Answer: Rajendra Prasad
Which Indian city is called the “Pink City”?
Answer: Jaipur
What is the national currency of India?
Answer: Rupee
Who wrote the Indian National Anthem?
Answer: Rabindranath Tagore
Which is the highest civilian award in India?
Answer: Bharat Ratna
Which Indian festival is known as the Festival of Lights?
Answer: Diwali
Which planet is closest to the Sun?
Answer: Mercury
What is the national aquatic animal of India?
Answer: River Dolphin
Which Mughal emperor built the Red Fort?
Answer: Shah Jahan
What is the chemical symbol of water?
Answer: H₂O
Which Indian cricketer is known as the “God of Cricket”?
Answer: Sachin Tendulkar
Which Indian state is famous for tea gardens?
Answer: Assam
Who was the first Indian woman to go into space?
Answer: Kalpana Chawla
Which is the longest river in India?
Answer: Ganga
Who was the first Prime Minister of India?
Answer: Jawaharlal Nehru
Which organ in the human body purifies blood?
Answer: Kidney
Which Indian satellite was first launched in 1975?
Answer: Aryabhata
Who is known as the “Missile Man of India”?
Answer: A. P. J. Abdul Kalam
Most Hard GK Questions with Answers
- Which Indian freedom fighter was called the “Grand Old Man of India”?
Answer: Dadabhai Naoroji - Which Mughal ruler introduced the Din-i-Ilahi religion?
Answer: Akbar - Which is the oldest mountain range in the world?
Answer: Aravalli - Who invented the periodic table?
Answer: Mendeleev - Which Indian city is called the “City of Lakes”?
Answer: Udaipur - Which Veda is dedicated to music and chants?
Answer: Samaveda - What is the hardest natural substance on Earth?
Answer: Diamond - Which Indian leader is known as the “Iron Man of India”?
Answer: Sardar Patel - Which is the largest delta in the world?
Answer: Sundarbans - Which organ in the human body produces insulin?
Answer: Pancreas - Who was the first woman ruler of Delhi?
Answer: Razia Sultan - What is the national emblem of India adapted from?
Answer: Lion Capital of Ashoka - Which planet is known as the “Blue Planet”?
Answer: Earth - Who was the first Indian woman to receive the Bharat Ratna?
Answer: Indira Gandhi - Which gas is used for refrigeration?
Answer: Ammonia - Who discovered the law of gravitation?
Answer: Newton - Which Indian state has the longest coastline?
Answer: Gujarat - Who was the first Indian to win an individual Olympic medal?
Answer: K. D. Jadhav - Which planet has the largest number of moons?
Answer: Saturn - What is the study of earthquakes called?
Answer: Seismology
Tough GK Questions with Answers
Which country is called the “Land of the Rising Sun”?
Answer: Japan
Who was the first person to walk on the Moon?
Answer: Neil Armstrong
What is the capital of Canada?
Answer: Ottawa
Which is the longest river in the world?
Answer: Nile
Who invented the telephone?
Answer: Alexander Graham Bell
Which is the largest desert in the world?
Answer: Sahara
Which planet is known as the “Red Planet”?
Answer: Mars
What is the currency of Russia?
Answer: Ruble
Which is the smallest country in the world by area?
Answer: Vatican City
Who painted the Mona Lisa?
Answer: Leonardo da Vinci
Which is the deepest ocean in the world?
Answer: Pacific Ocean
What is the capital of Australia?
Answer: Canberra
Who wrote the play “Romeo and Juliet”?
Answer: William Shakespeare
Which country gifted the Statue of Liberty to the USA?
Answer: France
Which is the highest mountain in the world?
Answer: Mount Everest
Who is known as the father of modern physics?
Answer: Albert Einstein
Which is the coldest place on Earth?
Answer: Antarctica
What is the national sport of Japan?
Answer: Sumo Wrestling
Which continent has the most countries?
Answer: Africa
What is the chemical symbol for Gold?
Answer: Au
Difficult GK Questions with Answers
- Which country is known as the “Land of Thousand Lakes”?
Answer: Finland - Who discovered penicillin?
Answer: Alexander Fleming - Which is the largest island in the world?
Answer: Greenland - What is the capital of South Korea?
Answer: Seoul - Which is the smallest ocean in the world?
Answer: Arctic Ocean - Who is the author of “The Origin of Species”?
Answer: Charles Darwin - Which country has the most volcanoes in the world?
Answer: Indonesia - What is the currency of Brazil?
Answer: Real - Which planet is closest to the Sun?
Answer: Mercury - Which country is called the “Cockpit of Europe”?
Answer: Belgium - What is the national animal of China?
Answer: Giant Panda - Which is the deepest point on Earth?
Answer: Mariana Trench - Who was the first woman to win a Nobel Prize?
Answer: Marie Curie - Which city hosted the first modern Olympic Games (1896)?
Answer: Athens - Which gas is most abundant in Earth’s atmosphere?
Answer: Nitrogen - Which continent has no permanent human population?
Answer: Antarctica - Which is the world’s largest coral reef system?
Answer: Great Barrier Reef - Who is known as the “Father of Geometry”?
Answer: Euclid - What is the national flower of Japan?
Answer: Cherry Blossom (Sakura) - Which country invented paper?
Answer: China
Hardest GK Questions with Answers in the World
Which is the only planet that rotates clockwise?
Answer: Venus
Who was the first woman to travel into space?
Answer: Valentina Tereshkova
Which country has the most time zones in the world?
Answer: France (including overseas territories)
Which element was first created artificially in a laboratory?
Answer: Technetium
Who is the only person to have won Nobel Prizes in two different sciences?
Answer: Marie Curie (Physics & Chemistry)
Which is the world’s oldest university still in operation?
Answer: University of al-Qarawiyyin, Morocco
What is the smallest bone in the human body?
Answer: Stapes (in the ear)
Which country has the motto “Liberty, Equality, Fraternity”?
Answer: France
Which is the longest railway line in the world?
Answer: Trans-Siberian Railway (Russia)
Who developed the first successful polio vaccine?
Answer: Jonas Salk
Which is the only continent without reptiles?
Answer: Antarctica
Who wrote the epic “Divine Comedy”?
Answer: Dante Alighieri
Which country has the largest number of UNESCO World Heritage Sites?
Answer: Italy
Which gas is known as “laughing gas”?
Answer: Nitrous Oxide (N₂O)
What is the capital of Kazakhstan?
Answer: Astana (formerly Nur-Sultan)
Who discovered the circulation of blood in the human body?
Answer: William Harvey
Which is the world’s largest hot desert after Sahara?
Answer: Arabian Desert
Who is called the “Father of the Computer”?
Answer: Charles Babbage
What is the hardest natural substance on Earth?
Answer: Diamond
Which is the oldest known written language in the world?
Answer: Sumerian
Hard Level GK Questions with Answers
- Which is the longest river in South America?
Answer: Amazon River - Who painted the famous artwork “The Starry Night”?
Answer: Vincent van Gogh - Which country is known as the “Land of the Rising Sun”?
Answer: Japan - Who is the author of the book War and Peace?
Answer: Leo Tolstoy - What is the SI unit of electric current?
Answer: Ampere - Which is the largest plateau in the world?
Answer: Tibetan Plateau - Who was the first Secretary-General of the United Nations?
Answer: Trygve Lie - Which gas is used in fire extinguishers?
Answer: Carbon Dioxide (CO₂) - What is the capital city of Canada?
Answer: Ottawa - Who was the first Indian to win the Nobel Prize in Physics?
Answer: C.V. Raman - Which country invented the game of chess?
Answer: India - Who discovered the electron?
Answer: J.J. Thomson - Which is the largest island country in the world?
Answer: Indonesia - Which Mughal ruler built the Peacock Throne?
Answer: Shah Jahan - Which is the tallest waterfall in the world?
Answer: Angel Falls (Venezuela) - Who wrote the play Hamlet?
Answer: William Shakespeare - Which country hosted the FIFA World Cup in 2022?
Answer: Qatar - Which is the national sport of Japan?
Answer: Sumo Wrestling - What is the largest gland in the human body?
Answer: Liver - Which Indian freedom fighter is known as “Netaji”?
Answer: Subhas Chandra Bose
Hard GK Questions with Answers in Hindi
| प्रश्न (GK Question in Hindi) | उत्तर (Answer) |
|---|---|
| भारत का पहला उपग्रह कौन सा था? | आर्यभट्ट |
| संयुक्त राष्ट्र संघ का मुख्यालय कहाँ है? | न्यूयॉर्क, अमेरिका |
| पंचतंत्र की रचना किसने की थी? | विष्णु शर्मा |
| भारत में “पिंक सिटी” किसे कहा जाता है? | जयपुर |
| किस भारतीय वैज्ञानिक को “भारतीय अंतरिक्ष कार्यक्रम का जनक” कहा जाता है? | विक्रम साराभाई |
| ‘गीता रहस्य’ किसने लिखा था? | बाल गंगाधर तिलक |
| दुनिया का सबसे ऊँचा युद्ध क्षेत्र कौन सा है? | सियाचिन ग्लेशियर |
| किस नदी को “बिहार का शोक” कहा जाता है? | कोसी नदी |
| भारतीय संविधान का अनुच्छेद 370 किस राज्य से संबंधित था? | जम्मू और कश्मीर |
| चंद्रयान-2 मिशन कब लॉन्च किया गया था? | 2019 |
| नोबेल पुरस्कार पाने वाले पहले एशियाई कौन थे? | रवीन्द्रनाथ टैगोर |
| ‘रामचरितमानस’ किस भाषा में लिखी गई है? | अवधी |
| भारत का सबसे पुराना तेल क्षेत्र कौन सा है? | डिगबोई (असम) |
| हरियाणा का गठन किस वर्ष हुआ था? | 1966 |
| भारतीय रिज़र्व बैंक की स्थापना कब हुई थी? | 1935 |
- संविधान सभा के स्थायी अध्यक्ष कौन थे?
उत्तर: डॉ. राजेन्द्र प्रसाद - विश्व का सबसे बड़ा रेगिस्तान कौन सा है?
उत्तर: सहारा रेगिस्तान - ‘Discovery of India’ पुस्तक किसने लिखी?
उत्तर: जवाहरलाल नेहरू - एशियाई खेलों का पहला आयोजन किस देश में हुआ था?
उत्तर: भारत (नई दिल्ली, 1951) - सबसे भारी धातु कौन सी है?
उत्तर: ऑस्मियम - भारत में योजना आयोग की स्थापना कब हुई थी?
उत्तर: 1950 - “दुनिया का छत” किस क्षेत्र को कहा जाता है?
उत्तर: पामीर पठार - महात्मा गांधी ने सत्याग्रह पहली बार भारत में कहाँ किया था?
उत्तर: चंपारण (बिहार) - विश्व का सबसे ऊँचा ज्वालामुखी कौन सा है?
उत्तर: ओजोस् डेल सालाडो (चिली) - भारत की पहली महिला मुख्यमंत्री कौन बनीं?
उत्तर: सुचेता कृपलानी (उत्तर प्रदेश) - ‘गॉड ऑफ क्रिकेट’ किसे कहा जाता है?
उत्तर: सचिन तेंदुलकर - भारतीय वायु सेना दिवस कब मनाया जाता है?
उत्तर: 8 अक्टूबर - यूनान (Greece) के युद्ध देवता का नाम क्या था?
उत्तर: एरेस - “वेदों की जननी” किसे कहा जाता है?
उत्तर: ऋग्वेद - भारतीय अंतरिक्ष अनुसंधान संगठन (ISRO) का मुख्यालय कहाँ है?
उत्तर: बेंगलुरु
Very Hard GK Questions with Answers in English
Which is the smallest bone in the human body?
Answer: Stapes (ear bone)
Who is known as the “Father of Geometry”?
Answer: Euclid
What is the national flower of Japan?
Answer: Cherry Blossom
In which year was the United Nations founded?
Answer: 1945
Who discovered Penicillin?
Answer: Alexander Fleming
Which is the deepest ocean trench in the world?
Answer: Mariana Trench
Who wrote the book The Origin of Species?
Answer: Charles Darwin
Which planet has the largest number of moons?
Answer: Saturn
Where did the Olympic Games originate?
Answer: Greece
Who was the first woman to win a Nobel Prize?
Answer: Marie Curie
What is the hardest natural substance on Earth?
Answer: Diamond
Which is the largest gland in the human body?
Answer: Liver
Who was the first person to reach the South Pole?
Answer: Roald Amundsen
Which country is called the “Land of the Rising Sun”?
Answer: Japan
Who is the author of Divine Comedy?
Answer: Dante Alighieri
Which gas is the most abundant in Earth’s atmosphere?
Answer: Nitrogen
Who painted the famous artwork The Last Supper?
Answer: Leonardo da Vinci
Which is the oldest mountain range in the world?
Answer: Aravalli Range
Who invented the World Wide Web (WWW)?
Answer: Tim Berners-Lee
Which is the largest desert in the world?
Answer: Antarctica (cold desert)
Hard GK Questions with Answers in Marathi
- भारताचे पहिले राष्ट्रपती कोण होते?
उत्तर: डॉ. राजेंद्र प्रसाद - “जन गण मन” हे राष्ट्रगीत कोणी लिहिले?
उत्तर: रवींद्रनाथ टागोर - जगातील सर्वात मोठा महासागर कोणता?
उत्तर: पॅसिफिक महासागर - चंद्रावर पाऊल ठेवणारा पहिला मानव कोण?
उत्तर: नील आर्मस्ट्राँग - “गीतेचा उपदेश” कोणी दिला?
उत्तर: श्रीकृष्ण - जगातील सर्वात लांब नदी कोणती?
उत्तर: नाईल नदी - “भारतीय संविधानाचे शिल्पकार” कोण होते?
उत्तर: डॉ. बाबासाहेब आंबेडकर - सह्याद्री पर्वतरांग महाराष्ट्रात कुठे आहे?
उत्तर: पश्चिम घाट - नोबेल पारितोषिक मिळवणारे पहिले भारतीय कोण?
उत्तर: रवींद्रनाथ टागोर - भारताची सर्वात मोठी वाघ अभयारण्य कोणती?
उत्तर: नागझिरा - पृथ्वीला किती उपग्रह आहेत?
उत्तर: एक (चंद्र) - जगातील सर्वात थंड खंड कोणता?
उत्तर: अंटार्क्टिका - भारताचे पहिले पंतप्रधान कोण होते?
उत्तर: पंडित जवाहरलाल नेहरू - “शक संवत्सर” कोणी सुरू केले?
उत्तर: राजा शक - महाराष्ट्राचे राज्यगीत कोणते आहे?
उत्तर: जय जय महाराष्ट्र माझा
Conclusion
I hope these Hard GK questions with answers have helped you learn something new today. Keep revising and challenging yourself with more famous and tricky GK quizzes for school assembly, because regular practice is the key to success. If you are preparing for UPSC, SSC, Banking, Railways, or Class 1 to 12 exams, these questions will give you an extra edge.
Remember, tough GK Questions with Answers are not only useful for exams but also help improve memory, logical thinking, and overall awareness. The more you practice these difficult GK questions, the sharper your knowledge becomes. Stay curious, keep learning, and explore more hard level GK questions to grow your knowledge every day.
FAQs:
What are the 10 hardest GK questions?
The 10 hardest GK questions cover world history, science, geography, politics, and inventions, such as the largest desert, the first human in space, oldest civilization, rare scientific discoveries, and complex current affairs.
What is the world’s hardest question?
The world’s hardest question is often considered to be abstract or philosophical, such as “What is the meaning of life?”, but in GK, it refers to questions about unsolved scientific or historical mysteries.
What is the hardest question of history?
The hardest history questions focus on ancient civilizations, lost cultures, and obscure events, such as the origins of the Indus Valley Civilization or exact details of ancient world wars.
Who was the first father of GK?
The “Father of General Knowledge” is often referred to as James H. Leuba, an educationist who emphasized systematic knowledge development.
What is important in GK?
In GK, the most important aspects are awareness of current affairs, history, geography, science, politics, and cultural knowledge, which help in exams, interviews, and daily learning.
Who is called the mother of GK?
The “Mother of GK” is sometimes referred to as Maria Montessori, for her methods of teaching children broad knowledge and awareness in an educational system.
