General Knowledge : General Science QUESTIONS AND ANSWERS :: part18 : 86 to 90
Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2014 examinations :
86.Sound Waves produce echo due to |
| Refraction |
| Diffraction |
| Reflection |
| Absorption |
87.Actinides are the elements with atomic numbers from : |
| 36 to 43 |
| 89 to 103 |
| 97 to 114 |
| 101 to 115 |
88.Which of the following gases is not known as green house gas ? |
| Carbon dioxide |
| Methane |
| Nirtous oxide |
| Hydrogen |
89.Ornithology is the study of |
| Flow of electric |
| Flow of heat |
| Aufbau Principle |
| Photoelectric effect |
90.Acetyl slicylic acid is commonly used as : |
| a pain killer |
| a sedative |
| a fertiliser |
| tear gas |
More General Science QUESTIONS AND ANSWERS available in next pages
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