| 1. | Bismuth was discovered by | Valentine |
| 2. | The biggest plant seed is | Cocodemer |
| 3. | Toxicology is the study of | Poisons |
| 4. | Virology is the study of | Viruses |
| 5. | Paleontology is the study of | Fossils |
| 6. | Calorimeter is used to measure | Quantity of heat |
| 7. | Chronometer was invented by | John Harrison |
| 8. | Stethoscope was invented by | William Stockes |
| 9. | Spinning frame was invented by | Sir Richard Arkwright |
| 10. | Al stands for | Aluminium |
| 11. | Gd stands for | Gadolinium |
| 12. | Ir stands for | Iridium |
| 13. | Bi stands for | Bismuth |
| 14. | The Chemical formula of sodium bicarbonate is | NaHCO3 |
| 15. | The chemical formula of common salt is | Nacl |
| 16. | The chemical formula of washing soda is | Na2CO3,IOH2O |
| 17. | The chemical formula of lime soda is | CaCO3 |
| 18. | The chemical formula of chloroform is | CHcl3 |
| 19. | The study of grasses is known as | Agrostology |
| 20. | The study of antiquities is known as | Archaeology |
| 21. | The study of the duration of life is known as | Chronobiology |
| 22. | The study of bacteria is known as | Bacteriology |
| 23. | Nylon was invented by | Dr.Wallace H.Carothers |
| 24. | Electric razor was invented by | Jacob Schick |
| 25. | The symbol of silver is | Ag |
| 26. | The symbol of silicon is | Si |
| 27. | The symbol of titanium is | Ti |
| 28. | Calcium oxide is commonly known as | Quick lime |
| 29. | A deviation of light passing from one medium to another is known as | Refraction |
| 30. | An apparatus for generation of atomic energy is called a | Reactor |
| 31. | A machine used for converting mechanical energy into electrical energy is called a | Generator |
| 32. | The first Indian woman in space was | Kalpana Chawla |
| 33. | The revolver was invented by | Samuel Colt |
| 34. | The refrigerator was invented by | J.Perkins |
| 35. | Which is the only common metal that is liquid at room temperature? | Mercury |






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