General Knowledge : General Science QUESTIONS AND ANSWERS :: part17 : 76 to 80
Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2014 examinations :
76.What should be the minimum interval between two successive blood donations ? |
| 6 weeks |
| 3 months |
| 6 minths |
| 8 months |
77.Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers etc. ? |
| Iron and cadmium |
| Nickel and cadmium |
| Lead peroxide and lead |
| Zinc and carbon |
78.Which of the following is the lightest metal ? |
| Mercury |
| Silver |
| Lithium |
| Lead |
79.Man cannot survive without taking minimum amount of |
| Carbohydrates |
| fats |
| proteins |
| minerals |
80.The element nickel is a |
| magnetic metal |
| radioactive metal |
| non magnetic metal |
| complex element |
More General Science QUESTIONS AND ANSWERS available in next pages
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