| No. | Question | Answer |
| 1. | Name the parts which on removal or destruction may cause the death of plant | Roots |
| 2. | The cover of air around the earth is called | Atmosphere |
| 3. | Air occupies | Space & mass |
| 4. | Plants and animals maintain the balance of what in air | Gases |
| 5. | The supporter of combustion in air is | Oxygen |
| 6. | What forms the earth's atmosphere | Air |
| 7. | The major components of air are | Nitrogen & Oxygen |
| 8. | Water is one of the basic constituents of all | Living |
| 9. | The scientific name of Lotus is | Nelumbo |
| 10. | No two human beings are completely | Alike |
| 11. | The process of preparation of food by plants is called | Photosynthesis |
| 12. | All living objects consist of | Cells |
| 13. | The vegetables such as carrot,beet root and radish that you
eat are | Roots
|
| 14. | Leaves are green because they have | Chlorophy II |
| 15. | Plants manufacture food by the process of | Photosynthesis |
| 16. | From the heart,the blood is transported to all the organs of
the body by | Arteries |
| 17. | Which teeth are replaced by the permanent teeth | Milk teeth |
| 18. | The reproductive cell of male is called the | Sperm |
| 19. | The plants use which part of air for their food | Carbon dioxide |
| 20. | Water is one of the basic constituents of all | Plant |
| 21. | Water freezes into ice at | 0 degree C. |
| 22. | Water boils at | 80 degree C. |
| 23. | The torch cell is a source of which energy | Electrical |
| 24. | Which source of energy wind is? | Renewable |
| 25. | Which energy is released by a transistor | Sound |
| 26. | Energy is always required for doing | Work |
| 27. | Electrical energy is converted mainly into light energy in | Filament |
| 28. | The energy hidden in atoms is called | Atomic |
| 29. | Balance in nature is the balance between the population of | Species |
| 30. | A famous mathematician of ancient India is | Aryabhatta |
| 31. | A substance which can exist as solid,liquid and gas | Water |
| 32. | The power of an electric bulb is marked in | Watts |
| 33. | Water stored in a high-level dam has | Potential energy |
| 34. | The dry cell produces electric energy from | Chemical energy |
| 35. | The unit used for measuring distances between heavenly
objects,is | Light Year |
| 36. | Musical instrument in which sound is produced by the vibration
of air is | Flute |
| 37. | Carbohydrates are present in | Cane Sugar |
| 38. | The gas used for disinfecting water is | Chlorine |
| 39. | Sand is a compound of | Silicon |
| 40. | A mixture of salt and camphor can be separated by | Sublimation |
| 41. | A magnet can be used to seperate a mixture of | Iron scrap and sulphur |
| 42. | The chemical which is not used for purifying water is | Washing soda |
| 43. | A bird which is active during night is | Owl |
| 44. | Hydrilla is a plant that grows in | Water |
| 45. | A plant which stores food in the root is | Ginger |
| 46. | In most flowers the most colorful part is the | Petal |
| 47. | The temperature of the surroundings is detected by | The Skin |
| 48. | The number of kinds of living organisms on this earth is about | Two & half million |
| 49. | A species of animals means | A group of similar animals |
| 50. | There are some plants which do not have | Leaves |
| 51. | An animal without a special organ for hearing is | Snake |
| 52. | The sense organ in man which are sensitive to chemicals are | Skin & nose |
| 53. | The tallest tree in the world is | The redwood tree |
| 54. | Normally, a housefly lives for about | One year |
| 55. | In the human body urine is formed in | The kidneys |
| 56. | The pancreas in our body is a part of | The digestive system |
| 57. | The blood vessels that we can see just below the skin on the
back of our palm are | Arteries & veins |
| 58. | The presence of starch in the leaf is shown by | Iodine |
| 59. | All the cells are similar in structure and function in | A tissue |
| 60. | The source of energy for all living things is | The sun |
| 61. | An animal which cannot take solid food is | Butterfly |
| 62. | Anaemia is usually caused by | Glucose |
| 63. | The simplest form of carbohydrate is | Aminoacid |
| 64. | The smallest unit of a protein is | 80-90 |
| 65. | The percentage of weight of water in our body is about | C |
| 66. | Scurvy is caused by lack of vitamin | Vitamins |
| 67. | Vegetables are included in our diet because mostly they supply | Vitamins |
| 68. | The most widely seen minerals in the bones are | Calcium and Phosphorus |
| 69. | Disgested food is mostly absorbed through the | Small intestine |
| 70. | The diet of a 2-year old baby should contain more | Protein |
| 71. | Tobacco plant makes nicotine in | The leaves |
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