General Knowledge : General Science QUESTIONS AND ANSWERS :: part17 : 16 to 20
Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2014 examinations :
16.Rusting of iron involves |
| oxidation |
| reduction |
| decomposition |
| displacement |
17.The practice of transplantation is used in cultivation of which of the following crops ? 1. Jowar 2. Rice 3. Tomatoes 4. Chillies |
| 1 and 2 |
| 2 and 3 |
| 1, 2 and 3 |
| 2, 3 and 4 |
18.Long distance photography is facilitated by |
| Visible light |
| X-rays |
| Infrared rays |
| Ultraviolet rays |
19.Which of the following diseases is not caused by bacteria ? |
| Leprosy |
| Typhoid |
| Tuberculosis |
| Measles |
20.The picture tube of a black and white T.V. set has only one electron gun that produces the picture on its screen. The number of electron guns, a colour picture tube has, is |
| five |
| three |
| four |
| six |
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