Chapter 11: Environmental Chemistry-Air

GRADE 9 · Chemistry · FBISE

Test your understanding of Environmental Chemistry-Air with 10 syllabus-aligned MCQs designed for GRADE 9 FBISE students.

Use this short practice session to revise key concepts, identify weak areas, and prepare for your board examination.

Sample Questions

See what you’ll practice in this quiz.

Organic chemistry is the study of compounds mainly containing:
Which element is essential for all organic compounds?
The main natural source of organic compounds is:

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What You’ll Practice

Chapter 11: Environmental Chemistry-Air Composition of atmosphere, air pollutants, sulphur oxides, carbon dioxide, carbon monoxide, methane, ground level ozone, sources of air pollution; natural sources, human activities global warming, acid rain and it's effects, catalytic converters, strategies to reduce environmental problems; climate change migration, afforestation and reforestation, sustainable land use, move to a low- carbon economy, international cooperation and politics, strategies to solve acid rain; acid rain mitigation, catalytic converters in vehicles, photosynthesis, personal protective measures against pollution; masks and respiratory protection, air quality indices, carbon monoxide detector, risk factors; long term exposure to pollutants, smoking, indoor pollution, allergens, climate change.
Chapter 12: Environmental Chemistry-water Properties of water, water as solvent, quality of water from natural resources, disadvantages of natural substances found in water; dissolved oxygen, metal compounds,plastics,wastewater, harmful microbes, nitrates from fertilizers,phosphates from fertilizers and detergents, benefits of natural substances found in water, treatment of domestic water,raw water treatment; sedimentation, coagulation, filtration,chlorination, distilled water,tap water, water pollution,house hold wastes, water born diseases; dysentery, jaundice, hepatitis, typhoid, ways to deal with the negative effects of water pollution, water scarcity in Pakistan; population growth, climate change,ineduquate water supply, fertilizers.
Chapter 13: Organic Chemistry Organic compounds, homologous series, structural formula, molecular formula, condensed formula, saturated hydrocarbons; alkanes, unsaturated hydrocarbons; alkenes, alkynes, Catenation, isomerism, classification of organic compounds, open chain compounds; straight chain,branched chain compounds, closed chain, compounds; Homocyclic and heterocyclic compounds, functional groups of alkenes, alkynes, alcohol; phenols,carboxylic acids, haloalkanes, esters, aldehyde and ketones, ethers,amines, amines.
Chapter 14: Hydrocarbons Alkanes, general methods of preparation of alkanes; By the dehydrogenation of alkenes and alkynes, by the reduction of alkyl halides,by the cracking of lager hydrocarbons, properties of alkanes; halogenation, combustion; complete and incomplete combustion.

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GRADE 9 Chemistry Federal Board Chapter 11: Environmental Chemistry-Air

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Chapter 11: Environmental Chemistry-Air

Chapter 1: Nature of Chemistry in Science

Chapter 2: Matter

Chapter 3: Atomic Structure

Chapter 4: Periodic Table and Periodicity of Properties

Chapter 5: Chemical Bonding

Chapter 6: Stoichiometery

Chapter 7: Electrochemistry

Chapter 8: Energetics

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