General Knowledge : General Science QUESTIONS AND ANSWERS :: part17 : 51 to 55
Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2014 examinations :
51.Which of the following theories as regards the origin of life on earth is accepted today ? |
| Theory of spontaneous generation |
| Theory of special creation |
| Cosmozoic theory |
| Theory of abiogenesis |
52.Which of the following is a physical basis of life ? |
| Mitochondria |
| Ribosome |
| Protoplasm |
| Nucleus |
53.The first synthetic fibre made by man was |
| rayon |
| nylon |
| polyester |
| terycott |
54.Which of the following chemicals is responsible for the depletion of ozone layer in the atomosphere ? |
| Chlorofluorocarbons |
| Nitrous oxide |
| Sulphur dioxide |
| Carbon dioxide |
55.Which of the following vitamins is considered helpful to keep the eyes healthy ? |
| Vitamin C |
| Vitamin B complex |
| Vitamin A |
| Vitamin E |
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