pollution science form 5 chapter 3

Which of the following is not the example of pollution?

• Land

• Air

• Water

• Thermal

• Waste

Based on the picture given, what is the cause of the air pollution?

• Burning of fossil

• Man-made air pollution

• Natural air pollution

Man-made air pollution such as combustion of fuel of vehicle or machines also causing

• Water pollution

• Thermal pollution

• Noise pollution

• Land pollution

Air Pollutant Index (API) is a parameter which is measured to determine _______________ level

• Air pollution

• Water pollution

• Land pollution

• Thermal pollution

Biochemical Oxygen Demand (BOD) is a parameter which is measured to determine___________ level

• Land pollution

• Water pollution

• Air pollution

• Thermal pollution

What is the relationship of BOD and level of water pollution?

• The higher the BOD, more polluted the water sample

• High BOD indicate a high quality of water sample

• Low BOD, more polluted the water sample

What is causing the life aquatic to be dead in the picture?

(a)  

Which of the following is the cause of eutrophication?

• chemical waste

• excess fertilizer

• solid waste

• oil

what is the negative impact of eutrophication?

• increased oxygen content in water

• reduced oxygen content in water

• provide more nutrient to the aquatic life

In a pond that is affected by the addition of phosphate ions and nitrate ions, the amount of dissolved oxygen __________,and biochemical oxygen demand (BOD) _________.

• decrease, increase

• increase, decrease

• decrease, decrease

• increase, increase