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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