| 46. | Approach in which disastrous diseases are being controlled using appropriate methods is |
| a. | Integrated disease management |
| b. | retrograded disease management |
| c. | transmission disease management |
| d. | sensory disease management |
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Answer: (a).Integrated disease management
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| 47. | In 1797, vaccination was first developed by |
| a. | Edward Jenner |
| b. | F. Sanger |
| c. | F.Miescher |
| d. | Erwin |
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Answer: (a).Edward Jenner
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| 48. | Older sediment layers have less radioactive isotopes than |
| a. | upper layer |
| b. | younger layer |
| c. | older layer |
| d. | deeper layer |
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Answer: (b).younger layer
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| 49. | An organic molecule is a type of molecule in which a molecule is composed of |
| a. | hydrogen |
| b. | carbon |
| c. | carbon and hydrogen |
| d. | oxygen |
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Answer: (c).carbon and hydrogen
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| 50. | A statement which is given after observations and organizing data is called a |
| a. | reasoning |
| b. | result |
| c. | hypothesis |
| d. | experiment |
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Answer: (c).hypothesis
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