Natural resources Worksheet-4

Natural resources Worksheet-4


  1. 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


  1. 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


  1. 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


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

A. Combustion of fuel                 B. Use of pesticides

C. Acid rain                                    D. Industrial effluents


  1. 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


  1. 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


  1. 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


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

A. Evaporation                              B. Lightening

C. Condensation                           D. Respiration


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

A. D2O [Deuterium oxide]         B. DiHydrogen oxide

C. Dry Ice                                       D. water Vapour


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

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


Answer Key:

  1. A
  2. D
  3. A
  4. C
  5. D
  6. D
  7. D
  8. B
  9. C
  10. C