| 51 | In railway tracks, a small gap is left between the rails | To allow for the expansion during heat |
| 52 | Fuse wire is made of | 63% tin and 37% lead |
| 53 | Where is blood formed in the human body? | Heart |
| 54 | The muscles, tissues and blood all are made up of | Proteins |
| 55 | The acid used in a car battery is | Sulphuric acid |
| 56 | The most important stimulant in tea leaves is | caffeine |
| 57 | Nitrogen occurs in plants and animals in the form of | Proteins |
| 58 | The longest and the strongest bone in the human body is | Femur |
| 59 | A Fahrenheit thermometer indicates a temperature of 14°F. Its corresponding reading on the Celsius scale will be | -10°C |
| 60 | The theory of Expanding Universe was first propounded by | Hubble |