general-knowledge-general-science Related Question Answers

26. Potassium nitrate is used in





27. Soda water contains





28. Most soluble in water is





29. Which of the following was to be discovered first in the chromospheres of the sun?





30. Which of the following is in liquid form at room temperature?





31. Sodium metal is kept under





32. Which of the following are the ingredients of gun metal?





33. From which mineral is radium obtained?





34. What is laughing gas?





35. Actinides are the elements with atomic numbers from





36. The two elements that are frequently used for making transistors are





37. The filament of an electric bulb is made of





38. Diamond is an allotropic form of





39. In fireworks, the green flame is produced because of





40. Permanent hardness of water can be removed by adding





41. Marsh gas is





42. LPG consists of mainly





43. Air is a/an





44. Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products?





45. Balloons are filled with





46. Which of the following does not contain a coinage metal?





47. Which metal pollute the air of a big city?





48. Which of the following is not an isotope of hydrogen?





49. The main constituents of pearls are





50. Amalgams are





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