109+ Top Questions Adults Should Know (With Answers, FAQs)

The “Questions Adults Should Know” list is more than just a simple set of boxes to check off. It’s like a mirror that shows our ongoing desire to know more and understand better.

These questions are little nudges, telling us that being a grown-up means more than getting older. It’s about growing in understanding, always being curious, asking questions, and changing when needed.

To really be a complete, well-balanced adult, we should never stop learning and always be ready to adjust to new things.

This article explains the top questions adults should know and the associated FAQs.

Top Questions Adults Should Know

1What is the capital of France?Paris
2How many days are there in a non-leap year?365 days
3What is the process by which plants make their food?Photosynthesis
4How many states are there in the USA?50 states
5Who wrote the play “Romeo and Juliet”?William Shakespeare
6What is the freezing point of water in Fahrenheit?32°F
7How many bones are in the adult human body?206 bones
8What gas do trees absorb from the atmosphere?Carbon dioxide (CO2)
9Who painted the Mona Lisa?Leonardo da Vinci
10In what year did World War II end?1945

Top Questions Adults Should Know

11Who is the author of “Pride and Prejudice”?Jane Austen
12What planet is known as the Red Planet?Mars
13What’s the largest ocean on Earth?Pacific Ocean
14Who was the first president of the United States?George Washington
15Which element has the atomic number 1?Hydrogen
16What is the largest mammal?Blue whale
17In which year did man first walk on the moon?1969
18Which river is the longest in the world?Nile River
19What is the currency of Japan?Yen
20Who is the Greek god of war?Ares
21Which country is known as the Land of the Rising Sun?Japan
22What is the capital of Australia?Canberra
23Who wrote “The Great Gatsby”?F. Scott Fitzgerald
24What’s the square root of 81?9
25Who invented the light bulb?Thomas Edison (common misconception, though he improved upon earlier designs)
26What’s the smallest prime number?2
27Which planet has rings?Saturn
28Who is known as the “Father of Physics”?Sir Isaac Newton
29Which country is famous for its tulips?Netherlands
30What is the main ingredient in guacamole?Avocado
31What language is spoken in Brazil?Portuguese
32What is the currency of India?Indian Rupee
33Who is Sherlock Holmes’ assistant?Dr. John Watson
34In which year did World War I start?1914
35What’s the distance around the Earth at the equator?Approximately 40,075 kilometers
36Who wrote the “Odyssey”?Homer
37Which vitamin is responsible for clotting of blood?Vitamin K
38What is the hardest natural substance on Earth?Diamond
39Which country gifted the Statue of Liberty to the USA?France
40Who composed the Four Seasons?Antonio Vivaldi
41Which gas is the most prevalent in Earth’s atmosphere?Nitrogen
42What is the world’s largest desert?Antarctic Desert
43Which planet is closest to the sun?Mercury
44What is the chemical symbol for gold?Au
45Who painted “The Starry Night”?Vincent van Gogh
46What is the tallest mountain in the world?Mount Everest
47What is the currency of the United Kingdom?British Pound Sterling
48In what year was the Declaration of Independence signed?1776
49Which bird is often associated with delivering babies?Stork
50Who discovered penicillin?Alexander Fleming
51What is the capital of Spain?Madrid
52What’s the largest planet in our solar system?Jupiter
53Who wrote “To Kill a Mockingbird”?Harper Lee
54What is the boiling point of water at sea level (in Celsius)?100°C
55Which animal is the king of the jungle?Lion
56What’s the currency used in Mexico?Mexican Peso
57Who is known as the “Father of the Nation” in India?Mahatma Gandhi
58Which element has the chemical symbol ‘O’?Oxygen
59Which Shakespeare play is known as the Scottish play?Macbeth
60What is the largest country by land area?Russia

Top Questions Adults Should Know

61Which blood type is known as the universal donor?O negative (O-)
62What’s the largest organ in the human body?Skin
63What is the smallest country in the world by land area?Vatican City
64Which famous physicist developed the theory of relativity?Albert Einstein
65What is the national flower of Japan?Cherry blossom (Sakura)
66In which organ are insulin and glucagon produced?Pancreas
67Which metal is in liquid form at room temperature?Mercury
68What’s the capital city of Canada?Ottawa
69Which African nation was never colonized?Ethiopia
70Who is the author of the “Harry Potter” series?J.K. Rowling
71Which planet is also known as the Evening Star?Venus
72Who is the creator of the Mona Lisa painting’s famous smile?Leonardo da Vinci
73In Greek mythology, who turned everything he touched into gold?King Midas
74Which musical instrument has 88 keys?Piano
75Who said, “I think, therefore I am”?René Descartes
76What is the main language spoken in Argentina?Spanish
77Which mammal is capable of true flight?Bat
78Which ancient wonder was located in the city of Babylon?Hanging Gardens of Babylon
79What’s the smallest ocean in the world?Arctic Ocean
80Who is credited with inventing the telephone?Alexander Graham Bell
81Which gas is responsible for the greenhouse effect?Carbon dioxide (CO2)
82Which planet is known for its Great Red Spot?Jupiter
83Who wrote “The Divine Comedy”?Dante Alighieri
84What’s the currency of South Africa?South African Rand (ZAR)
85Which bird is known for its beautiful tail feathers?Peacock
86Which country is the largest producer of coffee?Brazil
87Who composed the Moonlight Sonata?Ludwig van Beethoven
88In which sport would you perform a “smash”?Badminton or Tennis
89Which Asian country is known as the Land of the Morning Calm?South Korea
90What’s the tallest waterfall in the world?Angel Falls
91Who wrote “Brave New World”?Aldous Huxley
92Which is the only planet that rotates on its side?Uranus
93What is the official language of Brazil?Portuguese
94Which organ removes toxins from the bloodstream?Liver
95What is the study of mushrooms called?Mycology
96Which Shakespearean play is set on an island after a shipwreck?“The Tempest”
97Which is the largest freshwater lake by volume?Lake Baikal
98Who is the author of “1984”?George Orwell
99What is the capital of New Zealand?Wellington
100Which element is represented by the chemical symbol ‘Ag’?Silver
101Which country is the origin of the dance called “Tango”?Argentina
102Which fruit is known as the king of fruits?Mango
103What is the most common gas in the Earth’s atmosphere?Nitrogen
104Who was the first woman to win a Nobel Prize?Marie Curie
105What is the capital of Saudi Arabia?Riyadh
106Which animal is known as the ship of the desert?Camel
107Which musical instrument is also known as a mouth organ?Harmonica
108Which planet has the most moons?Jupiter
109What is the name of the river that runs through Egypt?Nile
110Who painted the ceiling of the Sistine Chapel?Michelangelo

FAQs on Questions Adults Should Know

Why is it important for adults to have general knowledge?

General knowledge equips adults with a broad understanding of various topics, helping them make informed decisions, engage in stimulating conversations, and develop a well-rounded perspective. Additionally, being knowledgeable builds confidence and can create personal and professional opportunities.

How can adults continue to expand their general knowledge?

Adults can regularly read newspapers, books, and magazines, listen to podcasts or watch documentaries, engage in courses or workshops, travel, and converse with diverse groups. Embracing a lifelong learning mindset is key to continuously expanding one’s knowledge base.

Are these questions universally applicable or culture-specific?

While some questions aim for universality, many can be culture-specific. Cultural context often shapes knowledge. It’s essential to approach these questions with an open mind and consider learning from various sources to gain a more comprehensive understanding.

Is there a definitive set of questions every adult should know?

No, the questions every adult “should” know vary based on culture, education, experiences, and personal interests. While some questions might be universally recognized as foundational or fundamental, knowledge is vast and ever-evolving. What’s important is the pursuit of knowledge and the ability to think critically about information.


The “Questions Adults Should Know” list isn’t just a checklist to tick off; it reflects our continuous thirst for knowledge.

These questions remind us that to be fully functioning, well-rounded adults, we should always learn, question, and adapt.

Awesome one; I hope this article answers your question.

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Paschal Uchechukwu
Paschal Uchechukwu

Paschal Uchechukwu Christain is a professional and passionate SEO writer on Education, including homeschool, college tips, high school, and travel tips.

He has been writing articles for over 5 years. He is the Chief Content Officer at School & Travel.

Paschal Uchechukwu Christain holds a degree in Computer Science from a reputable institution. Also, he is passionate about helping people get access to online money-making opportunities.

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