Chemistry of the Environment
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
Which chemical can be used as a qualitative test to confirm the presence of water by turning from white to blue?
A.Anhydrous cobalt(II) chloride
B.Anhydrous copper(II) sulfate
C.Concentrated sulfuric acid
D.Potassium manganate(VII)
- 2.
Natural water sources contain several dissolved substances. Which of these gases is vital for the survival of aquatic life such as fish?
A.B.C.D. - 3.
In the process of water treatment for public supply, what is the primary reason for adding chlorine to the water?
A.To remove insoluble sand and grit
B.To improve the taste and smell of the water
C.To kill bacteria and other microorganisms
D.To precipitate dissolved calcium ions
Download the worksheet for Chemistry of the Environment - Water to practice offline. It includes additional chapter-level practice questions.
Air quality and climate
SubtopicAir quality and climate under Chemistry of the Environment for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
Sulfur dioxide is a major pollutant emitted from power stations. What is the primary environmental impact of sulfur dioxide emissions?
A.Depletion of the ozone layer
B.Increase in global temperatures
C.Suffocation of aquatic life due to lack of oxygen
D.Formation of acid rain
- 2.
Which pair of gases are the two most significant greenhouse gases responsible for the enhanced greenhouse effect?
A.Nitrogen and Oxygen
B.Argon and Neon
C.Carbon dioxide and Methane
D.Carbon monoxide and Sulfur dioxide
- 3.
Which of the following air pollutants is primarily produced by the incomplete combustion of carbon-containing fuels?
A.Sulfur dioxide
B.Carbon monoxide
C.Nitrogen dioxide
D.Methane
Download the worksheet for Chemistry of the Environment - Air quality and climate to practice offline. It includes additional chapter-level practice questions.
Fertilizers
SubtopicFertilizers under Chemistry of the Environment for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
The diagram below illustrates the environmental impact of excessive fertilizer use. What is the name of the process described in the final stage where aquatic life dies due to lack of oxygen?
A.Nitrogen Fixation
B.Desalination
C.Eutrophication
D.Acidification
- 2.
Which of the following compounds is a widely used nitrogen-based fertilizer produced by the reaction of ammonia with nitric acid?
A.B.C.D. - 3.
Which specific role is primarily attributed to the Nitrogen () component in commercial fertilizers?
A.Encouraging the growth of fruits and flowers
B.Promoting healthy leaf growth and protein synthesis
C.Strengthening the root systems of young plants
D.Increasing the plant's resistance to drought
Download the worksheet for Chemistry of the Environment - Fertilizers to practice offline. It includes additional chapter-level practice questions.
Greenhouse effect and global warming
SubtopicGreenhouse effect and global warming under Chemistry of the Environment for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
Which gas is produced by the incomplete combustion of fossil fuels but is NOT categorized as a primary greenhouse gas?
A.Methane
B.Water vapor
C.Nitrous oxide
D.Carbon monoxide
- 2.
What is the primary global consequence resulting from the enhanced greenhouse effect?
A.Increased rate of skin cancer due to exposure to UV radiation
B.Depletion of the ozone layer in the upper atmosphere
C.Rising sea levels due to thermal expansion and the melting of polar ice caps
D.Formation of acid rain which damages limestone buildings
- 3.
Which human-related activity is a significant primary source of methane () in the atmosphere?
A.Use of catalytic converters in petrol engines
B.Bacterial decay of vegetable matter in anaerobic conditions such as rice paddies
C.The combustion of hydrogen as a clean energy source
D.Neutralization of acidic soil using calcium carbonate
Download the worksheet for Chemistry of the Environment - Greenhouse effect and global warming to practice offline. It includes additional chapter-level practice questions.