1. Which organ pumps blood to all parts of the body?
The heart is a muscular organ that pumps blood throughout the body.
2. Which organs help us take oxygen into our body?
The lungs take oxygen from the air and help remove carbon dioxide when we breathe.
3. Which part of the digestive system absorbs most nutrients from digested food?
Most nutrients from digested food are absorbed through the walls of the small intestine.
4. Which organ is mainly responsible for thinking, learning and memory?
The brain controls thinking, learning, memory and many other body functions.
5. Which part of the body helps us bite and chew food?
Teeth cut, tear and grind food so it becomes easier to swallow and digest.
6. Which vitamin is commonly associated with healthy gums and helps the body absorb iron?
Vitamin C supports healthy gums and helps the body absorb iron from plant foods.
7. Which mineral is especially important for strong bones and teeth?
Calcium is an important mineral for maintaining strong bones and teeth.
8. Which blood cells carry oxygen to different parts of the body?
Red blood cells contain hemoglobin, which helps carry oxygen through the body.
9. Which is the largest organ of the human body?
Skin is the body’s largest organ and helps protect the body from the outside environment.
10. How many main sense organs do we commonly learn about in primary school?
The five commonly taught sense organs are eyes, ears, nose, tongue and skin.
11. Which green substance in leaves helps plants absorb light for photosynthesis?
Chlorophyll is the green pigment in plants that absorbs light energy for photosynthesis.
12. Which gas do green plants take in from the air during photosynthesis?
Plants use carbon dioxide from the air during photosynthesis.
13. Which part of a plant anchors it in the soil and absorbs water and minerals?
Roots hold the plant in the soil and absorb water and minerals.
14. What is the process in which a seed begins to grow into a new plant?
Germination is the process by which a seed starts growing into a young plant.
15. What is the transfer of pollen from one flower part to another called?
Pollination is the transfer of pollen to the stigma of a flower.
16. Which part of many flowering plants is mainly involved in reproduction?
Flowers contain structures involved in the reproduction of flowering plants.
17. Which is the national tree of India?
The Banyan tree is the national tree of India.
18. Which flower is the national flower of India?
The lotus is the national flower of India.
19. Which fruit is the national fruit of India?
Mango is the national fruit of India.
20. Which tree is well known in India for its traditional medicinal uses?
Neem has a long history of traditional medicinal and household uses in India.
21. A whale lives in water but belongs to which animal group?
Whales are mammals because they breathe air and mothers feed their young with milk.
22. A frog belongs to which group of animals?
Frogs are amphibians and can live in both aquatic and terrestrial environments during their life cycle.
23. Which group does a crocodile belong to?
Crocodiles are reptiles with scaly skin and other reptile characteristics.
24. What is an animal called if it mainly eats plants?
A herbivore mainly eats plants, such as grass, leaves, fruits or seeds.
25. Which type of animal eats both plants and animals?
An omnivore eats both plant-based and animal-based foods.
26. Which animal is famous for being the fastest land animal?
The cheetah is famous for reaching very high speeds over short distances.
27. Which is the largest animal known to have lived on Earth?
The blue whale is the largest animal known to have lived on Earth.
28. What is the national bird of India?
The Indian peacock is the national bird of India.
29. Which insect is well known for making honey?
Honeybees collect nectar and use it to produce honey in their colonies.
30. Which useful natural fibre is obtained from silkworm cocoons?
Silk is a natural fibre produced from the cocoons of silkworms.
31. Which planet is closest to the Sun?
Mercury is the planet closest to the Sun.
32. Which is the largest planet in our Solar System?
Jupiter is the largest planet in the Solar System.
33. Which planet is especially famous for its beautiful ring system?
Saturn is famous for its prominent system of rings made mostly of ice and rocky material.
34. Which planet is called the Red Planet?
Mars appears reddish because of iron-rich minerals on its surface.
35. What is the natural satellite of Earth?
The Moon is Earth’s natural satellite and orbits Earth.
36. How many planets are in our Solar System?
There are eight officially recognized planets in our Solar System.
37. What is the spinning of Earth on its own axis called?
Earth’s spinning on its own axis is called rotation.
38. What is Earth’s movement around the Sun called?
Earth’s movement around the Sun is called revolution.
39. Which imaginary line divides Earth into the Northern and Southern Hemispheres?
The Equator is the imaginary line at 0° latitude that divides Earth into two hemispheres.
40. Which is the largest ocean on Earth?
The Pacific Ocean is the largest ocean on Earth.
41. What is the capital of India?
New Delhi is the capital of India.
42. What is the official currency of India?
The Indian rupee is the official currency of India.
43. What is the national animal of India?
The Bengal tiger is the national animal of India.
44. What is the national bird of India?
The Indian peacock is the national bird of India.
45. What is the national anthem of India?
“Jana Gana Mana” is the national anthem of India.
46. Who wrote the national anthem of India?
Rabindranath Tagore wrote “Jana Gana Mana.”
47. What is the blue wheel in the centre of India’s national flag called?
The blue wheel in the centre of the Indian flag is called the Ashoka Chakra.
48. Which three colours form the main horizontal bands of the Indian national flag?
The Indian national flag has saffron, white and green horizontal bands, with the Ashoka Chakra in the centre.
49. Which national day of India is celebrated on 26 January?
India celebrates Republic Day on 26 January each year.
50. On which date does India celebrate Independence Day?
India celebrates Independence Day on 15 August.
51. Which is the largest continent in the world?
Asia is the largest continent by area.
52. On which continent is the Sahara Desert located?
The Sahara Desert covers a large part of northern Africa.
53. Which is the highest mountain above sea level?
Mount Everest has the highest elevation above sea level.
54. Which ocean lies south of India?
The Indian Ocean lies to the south of India.
55. Which mountain range forms a high natural barrier in northern India?
The Himalayas form a vast mountain system along the northern part of the Indian subcontinent.
56. Which is one of the major rivers of northern India?
The Ganga is one of the major rivers of northern India.
57. What is land completely surrounded by water called?
An island is a piece of land completely surrounded by water.
58. What is land surrounded by water on three sides called?
A peninsula is a piece of land surrounded by water on three sides.
59. Which type of region usually receives very little rainfall?
Deserts are dry regions that generally receive very little rainfall.
60. Which model is used to represent the shape and surface of Earth?
A globe is a model of Earth that represents its roughly spherical shape and major features.
61. What is the change of liquid water into water vapour called?
Evaporation is the change of liquid water into water vapour.
62. What happens when water vapour cools and changes into tiny liquid water droplets?
Condensation occurs when water vapour cools and changes into liquid water droplets.
63. Ice is which state of matter?
Ice is the solid form of water.
64. Sunlight is an example of which type of natural resource?
Sunlight is considered a renewable source of energy because it is naturally replenished.
65. Which of these is a fossil fuel?
Coal is a fossil fuel formed from ancient plant material over very long periods.
66. Which action means using fewer resources and creating less waste?
Reduce means using less and avoiding unnecessary consumption and waste.
67. What useful material can be made from many types of kitchen waste such as fruit and vegetable peels?
Suitable organic kitchen waste can decompose and be turned into nutrient-rich compost.
68. Which gas is essential for humans to breathe?
Humans need oxygen for cellular respiration and normal body functions.
69. Which substance makes up most of the human body and is essential for life?
Water makes up a large part of the human body and is essential for many body processes.
70. Which instrument is used to find directions?
A compass helps determine directions such as north, south, east and west.
71. In which sport are runs scored by hitting a ball with a bat?
Cricket players use a bat to hit the ball and score runs.
72. How many players are there in a cricket team?
A cricket team consists of 11 players.
73. Which sport is played using a racket and a shuttlecock?
Badminton is played with rackets and a shuttlecock.
74. Which sport is played mainly by using the feet to move a ball toward a goal?
Football is played by moving the ball toward the opponent’s goal, mainly using the feet.
75. Which board game is played with kings, queens, bishops, rooks, knights and pawns?
Chess is a strategy board game played using these six types of pieces.
76. Which computer device is mainly used to enter letters and numbers?
A keyboard is used to enter letters, numbers and symbols into a computer.
77. Which computer device displays pictures, text and videos?
A monitor displays visual information from a computer.
78. Which device is used to print information onto paper?
A printer produces a physical copy of digital information on paper.
79. Which worldwide network allows computers and devices to exchange information?
The Internet is a worldwide network that connects computers and other devices.
80. What type of online tool helps us find information on the Internet?
A search engine helps users find information and websites on the Internet.
81. How many minutes are there in one hour?
One hour contains 60 minutes.
82. How many hours are there in one full day?
One full day contains 24 hours.
83. How many months are there in one year?
A calendar year has 12 months.
84. How many days are there in a leap year?
A leap year has 366 days, with an extra day added to February.
85. Which unit is commonly used to measure the mass of a school bag?
Kilograms are commonly used to measure the mass of objects such as school bags.
86. Which unit is commonly used to measure the amount of liquid in a large bottle?
Litres are commonly used to measure the volume of liquids.
87. Which professional is trained to diagnose and treat illnesses?
Doctors are trained to diagnose and treat illnesses and other health problems.
88. Who designs buildings and prepares plans for their construction?
Architects design buildings and prepare plans for their construction.
89. Who grows crops and helps produce food for people?
Farmers grow crops and may also raise livestock as part of food production.
90. Which means of transport normally travels on railway tracks?
Trains are designed to travel along railway tracks.
91. Which colour on a standard traffic signal means stop?
Red traffic lights tell road users to stop.
92. Which colour on a standard traffic signal means go when it is safe?
A green traffic signal generally means traffic may proceed when it is safe to do so.
93. Which safety device should passengers use in a car?
A seat belt helps protect passengers during sudden stops and crashes.
94. What marked place is commonly provided for pedestrians to cross a road?
A zebra crossing is a marked crossing area intended for pedestrians.
95. What colourful arc can appear when sunlight interacts with water droplets in the air?
A rainbow can form when sunlight is refracted, reflected and dispersed by water droplets.
96. Which instrument is used to measure temperature?
A thermometer is an instrument used to measure temperature.
97. Which mountain is located in the Himalayas and is the world’s highest above sea level?
Mount Everest is the highest mountain above sea level and lies in the Himalayas.
98. Which gas is released by green plants during photosynthesis?
Green plants release oxygen as a product of photosynthesis.
99. Which ocean is the largest and deepest ocean basin on Earth?
The Pacific Ocean is the largest ocean and contains the deepest known parts of Earth’s oceans.
100. Which planet is the only known planet to support life?
Earth is the only planet currently known to support life.