| 31. | _________ element had guided the earlier navigators to keep them on right path.- |
| a. | Magnetite |
| b. | Carbon |
| c. | Coal |
| d. | Uranium |
| 32. | Heat is energy in the process of being transferred from: |
| a. | |
| b. | |
| c. | |
| d. |
| 33. | Which one is true? |
| a. | |
| b. | |
| c. | |
| d. |
| 34. | A population is a group of- |
| a. | |
| b. | |
| c. | |
| d. |
| 35. | Rising air cools by this process: |
| a. | Expansion |
| b. | |
| c. | |
| d. |
| 36. | The controversial dam across the river Narmada? |
| a. | |
| b. | Hirakud |
| c. | |
| d. |
| 37. | Snow leopard is found in which National Park? |
| a. | Kaziranga |
| b. | |
| c. | Bharatpur |
| d. | Nagarhole |
| 38. | The place where the worst nuclear disaster took place? |
| a. | Washington |
| b. | Chernobyl |
| c. | Bhopal |
| d. | Japan |
| 39. | The phenomenon of accumulation of non-biodegradable pesticides in human beings- |
| a. | |
| b. | Bioaccumulation |
| c. | Biodegradation |
| d. | Bioremediation |
| 40. | The main energy source for the environment is ________ |
| a. | |
| b. | |
| c. | |
| d. |
