1. Which gas do humans need for breathing?
Oxygen is needed by our cells to release energy from food.
2. Which organ pumps blood throughout the human body?
The heart is a muscular organ that pumps blood around the body.
3. Which organs help us take oxygen into our body?
The lungs take oxygen from the air and release carbon dioxide.
4. Which organ controls most activities of the human body?
The brain controls thinking, movement, senses and many other body functions.
5. Where does most digestion and absorption of nutrients take place?
Most nutrients from digested food are absorbed through the walls of the small intestine.
6. Which vitamin is produced by the body when skin is exposed to sunlight?
Sunlight helps our skin produce vitamin D, which supports healthy bones.
7. Which mineral is especially important for strong bones and teeth?
Calcium is an important mineral for building and maintaining strong bones and teeth.
8. Which blood cells carry oxygen around the body?
Red blood cells contain hemoglobin, which helps carry oxygen.
9. Which organs filter wastes from the blood and help make urine?
The kidneys filter the blood and remove certain wastes from the body through urine.
10. What is the framework of bones inside our body called?
The skeleton is the body’s framework of bones and helps support and protect it.
11. What process do green plants use to make their food?
Photosynthesis allows green plants to make food using sunlight, water and carbon dioxide.
12. Which green pigment helps plants absorb sunlight?
Chlorophyll is the green pigment that absorbs light energy for photosynthesis.
13. Which part of a plant usually absorbs water and minerals from the soil?
Roots anchor plants and absorb water and minerals from the soil.
14. Which part of a flowering plant can develop into a new plant?
A seed contains the young plant and can grow into a new plant under suitable conditions.
15. Which three parts are commonly found in most flowering plants?
Roots, stems and leaves are major parts of most flowering plants.
16. Which plant is specially adapted to survive in very dry regions?
Cacti can store water and have features that reduce water loss in dry environments.
17. Which Indian tree is well known for its useful medicinal properties?
Neem has been traditionally used in many ways for its useful properties.
18. What is the loss of water vapour from plant leaves called?
Transpiration is the release of water vapour from plant surfaces, especially leaves.
19. Which gas is released by green plants during photosynthesis?
Oxygen is released as a product of photosynthesis.
20. What is the transfer of pollen from one flower to another flower called?
Pollination is the transfer of pollen from the anther to the stigma of a flower.
21. Which is the largest animal known to have lived on Earth?
The blue whale is the largest known animal on Earth.
22. Which land animal is famous for being the fastest?
The cheetah can reach very high speeds over short distances.
23. A frog belongs to which group of animals?
Frogs are amphibians because they spend parts of their life in water and on land.
24. A snake belongs to which group of animals?
Snakes are reptiles, a group that also includes lizards, turtles and crocodiles.
25. Which animal is especially known for carrying its young in a pouch?
Kangaroos are marsupials and females carry their young in a pouch.
26. Which bird cannot fly but is an excellent swimmer?
Penguins cannot fly, but their wings are adapted for swimming.
27. Which insect is well known for making honey?
Honeybees collect nectar and use it to produce honey in their colonies.
28. Animals that mainly eat plants are called what?
Herbivores mainly eat plants, such as grass, leaves, fruits or seeds.
29. Animals that eat both plants and animals are called what?
Omnivores eat both plant-based and animal-based foods.
30. Which organs help fish breathe underwater?
Fish use gills to take dissolved oxygen from water.
31. What is the main source of energy for Earth?
The Sun provides most of the energy that supports life and drives Earth’s weather and climate systems.
32. How many planets are officially recognized in our Solar System?
Our Solar System has eight recognized planets.
33. Which planet is closest to the Sun?
Mercury is the innermost planet of the Solar System.
34. Which is the largest planet in our Solar System?
Jupiter is the largest planet in the Solar System by diameter and mass.
35. Which planet is famous for its prominent ring system?
Saturn has a large and easily visible system of rings made mainly of ice and rocky material.
36. Which planet is known as the Blue Planet?
Earth appears blue from space mainly because much of its surface is covered by water.
37. What is Earth’s natural satellite?
The Moon is Earth’s natural satellite and orbits our planet.
38. What is the spinning of Earth on its axis called?
Earth rotates on its axis, causing the cycle of day and night.
39. What is Earth’s movement around the Sun called?
Earth revolves around the Sun once approximately every 365.25 days.
40. Which imaginary line divides Earth into the Northern and Southern Hemispheres?
The Equator is an imaginary line at 0° latitude dividing Earth into two hemispheres.
41. What is the capital of India?
New Delhi is the capital of India and the seat of the central government.
42. Which ocean lies to the south of India?
The Indian Ocean lies south of the Indian subcontinent.
43. Which animal is the national animal of India?
The Bengal tiger is the national animal of India.
44. Which bird is the national bird of India?
The Indian peacock is the national bird of India.
45. Which flower is the national flower of India?
The lotus is recognized as India’s national flower.
46. Which tree is the national tree of India?
The banyan tree is the national tree of India.
47. What is India’s national song?
Vande Mataram, written by Bankim Chandra Chattopadhyay, is India’s national song.
48. What is India’s national anthem?
Jana Gana Mana was written by Rabindranath Tagore and is India’s national anthem.
49. Which three colors appear as the main bands of India’s national flag?
The Indian national flag has saffron, white and green horizontal bands with the Ashoka Chakra in the center.
50. What is the blue wheel in the center of India’s national flag called?
The blue wheel is called the Ashoka Chakra and has 24 spokes.
51. Who is popularly known as the Father of the Nation in India?
Mahatma Gandhi is widely known in India as the Father of the Nation.
52. On which date did India become independent?
India became independent from British rule on 15 August 1947.
53. On which date did the Constitution of India come into effect?
The Constitution of India came into effect on 26 January 1950, celebrated as Republic Day.
54. Who chaired the Drafting Committee of the Indian Constitution?
Dr. B. R. Ambedkar chaired the Drafting Committee of the Constituent Assembly.
55. Which famous monument was built by Shah Jahan in memory of Mumtaz Mahal?
The Taj Mahal in Agra was commissioned by Mughal emperor Shah Jahan in memory of Mumtaz Mahal.
56. Which historic monument in Delhi was built by Shah Jahan?
Shah Jahan commissioned the Red Fort in Delhi during the Mughal period.
57. Which mountain range lies along the northern part of India?
The Himalayas form a major mountain system along India’s northern boundary.
58. Which major river flows through northern India and enters the Bay of Bengal?
The Ganga is one of India’s major rivers and flows eastward toward the Bay of Bengal.
59. Which major desert is located mainly in northwestern India?
The Thar Desert is located mainly in Rajasthan and extends into parts of Pakistan.
60. What is the standard time used across India called?
Indian Standard Time, or IST, is based on 82.5° east longitude.
61. What process changes liquid water into water vapour?
Evaporation changes liquid water into water vapour, usually due to heating.
62. What process changes water vapour into liquid water?
Condensation occurs when water vapour cools and changes into liquid water.
63. What happens when liquid water changes into ice?
Freezing is the change of a liquid into a solid due to cooling.
64. Which force pulls objects toward Earth?
Earth’s gravity attracts objects toward its center.
65. Which force opposes motion when two surfaces rub against each other?
Friction acts between surfaces and generally opposes their relative motion.
66. Which object can attract iron objects?
Magnets attract magnetic materials such as iron.
67. What is the complete path through which electric current flows called?
An electric circuit is a complete conducting path through which current can flow.
68. Solar energy is an example of which type of energy source?
Solar energy comes from the Sun and is considered a renewable energy source.
69. Which three actions are commonly called the 3Rs of waste management?
The 3Rs are reduce, reuse and recycle, which help reduce waste and conserve resources.
70. What do plants and trees provide that is important for many living organisms?
Plants release oxygen during photosynthesis and provide food and other useful resources.
71. Which sport uses a bat, ball and wickets?
Cricket is played using a bat, ball and wickets.
72. How many players from one team are on the field in football during normal play?
A football team has 11 players on the field during normal play, including the goalkeeper.
73. Which famous tournament is associated with tennis and is played in London?
Wimbledon is a major tennis tournament held in London, England.
74. Which game is played on a board with 64 squares?
A standard chessboard has 64 squares arranged in eight rows and eight columns.
75. Which international sporting event is held every four years in Summer and Winter editions?
The Olympic Games have separate Summer and Winter editions, each normally held every four years.
76. Which sport is played with a racket and a shuttlecock?
Badminton is played with rackets and a shuttlecock across a net.
77. Which sport traditionally uses a curved stick and a ball?
Hockey is played with sticks and a ball, with players trying to score goals.
78. Which sport involves a long-distance running race of 42.195 km?
A standard marathon race covers 42.195 kilometres.
79. Which Indian chess player became India’s first undisputed World Chess Champion?
Viswanathan Anand became the undisputed World Chess Champion in 2007.
80. Which Indian athlete won India’s first Olympic gold medal in athletics?
Neeraj Chopra won the men’s javelin throw gold medal at the Tokyo 2020 Olympics, held in 2021.
81. What does CPU stand for?
CPU stands for Central Processing Unit, which performs and controls many important computer operations.
82. Which device is mainly used to type letters and numbers into a computer?
A keyboard is an input device used to enter letters, numbers and commands.
83. Which computer device displays text, pictures and videos?
A monitor is an output device that displays visual information from a computer.
84. What is the worldwide network that connects computers and devices?
The Internet is a worldwide system of interconnected computer networks and devices.
85. What does WWW stand for?
WWW stands for World Wide Web, the system of interlinked web resources accessed through the Internet.
86. Which type of website helps users find information on the web?
A search engine helps users find web pages and other information online.
87. Which should you keep secret to help protect an online account?
Passwords should be kept private and should not be shared with others.
88. Which device produces a paper copy of a document?
A printer produces a physical paper copy of digital information.
89. Which small portable device can be used to store and transfer computer files?
A USB flash drive is a small storage device that can save and transfer files.
90. What does AI commonly stand for in technology?
AI stands for Artificial Intelligence, a field of technology involving machines performing tasks that can require human-like intelligence.
91. How many centimetres are there in one metre?
One metre is equal to 100 centimetres.
92. How many metres are there in one kilometre?
One kilometre is equal to 1,000 metres.
93. How many seconds are there in one minute?
One minute contains 60 seconds.
94. How many hours are there in one day?
A standard day has 24 hours.
95. Which professional treats people who are ill or injured?
Doctors diagnose and treat many illnesses and injuries.
96. Who is trained to put out fires and help people during fire emergencies?
Firefighters are trained to respond to fires and other emergencies.
97. Who operates an aircraft?
A pilot is trained to operate and fly an aircraft.
98. Which color of a standard traffic light means “stop”?
At standard traffic signals, red tells road users to stop.
99. Where should pedestrians usually cross a busy road when a marked crossing is available?
A marked pedestrian crossing provides a designated place to cross the road safely.
100. What is the immediate basic care given to someone who is injured before professional medical help arrives?
First aid is the immediate basic care provided to an injured or suddenly ill person.