(555+) Hard GK Questions with Answers in Hindi & English

Q: 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.

Q: 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.

Q: 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.

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.

(555+) Hard GK Questions with Answers in Hindi & English | Latest Quiz (2026)