Natural resources Worksheet-4

Natural resources Worksheet-4

11. Which of the following process in not responsible for increasing the concentration of carbon dioxide in air?

A. Photosynthesis                         B. Combustion

C. Transpiration                           D. Weathering of rocks

12. The direction in which wind blows is affected by :

A. Rotation of earth                     B. Presence of Mountains

C. Uneven heating of land D. All of these

13. Cloud formation takes place due to condensation of water vapours in a region of:

A. Low Pressure                           B. High Pressure

C. Moderate Pressure                 D. None of these

14. Which of the following is not responsible for air pollution :

A. Combustion of fuel                 B. Use of pesticides

C. Acid rain                                    D. Industrial effluents

15. Process by which dissolved oxygen is decreased due to increased algal growth by using added organic compounds / waste in water bodies is known as:

A. Oxidation                                  B. Biomagnifications

C. Decomposition                         D. Eutrophication

16. Which of the following is not the effect of water pollution?

A. Decrease in Dissolved oxygen

B. Increase in Temperature of water bodies

C. Increase in concentration of total dissolved solids

D. Melting of polar ice

17. The type of plants that grow in particular region depends on which of the following property of soil?

A. Nutrient composition of the soil

B. Amount of humus present in it

C. Depth of the soil

D. All of these

18. Which of the following process does not help in maintaining a water cycle?

A. Evaporation                              B. Lightening

C. Condensation                           D. Respiration

19. Which of the following is not a form of water?

A. D₂O [Deuterium oxide]         B. DiHydrogen oxide

C. Dry Ice                                       D. water Vapour

20. Which of the following is a source of fresh water?

A. Sea                 B. Ocean            C. Wells             D. All of these

Answer Key:

11. A
12. D
13. A
14. C
15. D
16. D
17. D
18. B
19. C
20. C