Start learning →

ICSE Class 9 Atmospheric Pollution — practice questions

Explore 28 free Atmospheric Pollution questions in ICSE Class 9 Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

Practise Atmospheric Pollution with Quill →

Atmospheric Pollution questions and exercises with answers

Showing questions 1–28 of 28.

Which of the following is a secondary air pollutant?Read the answer and worked solution →What are the physical properties of carbon monoxide?Read the answer and worked solution →What is the physical appearance of nitrogen dioxide gas?Read the answer and worked solution →Fine particulate matter PM2.5 has a diameter smaller than:Read the answer and worked solution →Ground-level ozone forms mainly when NOx and VOCs react with:Read the answer and worked solution →In the stratosphere, UV light breaks down CFCs to release:Read the answer and worked solution →Which international treaty aimed to phase out ozone-depleting substances?Read the answer and worked solution →Which fuels are the primary source of sulfur dioxide emissions?Read the answer and worked solution →Which greenhouse gas is the second-largest driver of global warming?Read the answer and worked solution →Which radioactive gas enters buildings from the underlying soil?Read the answer and worked solution →Oxidation of sulfur dioxide within cloud droplets forms which acid?Read the answer and worked solution →Which toxic heavy metal is emitted by coal burning and cement production?Read the answer and worked solution →By scientific definition, acid rain is precipitation having a pH below:Read the answer and worked solution →Natural acidity in unpolluted rainwater is primarily caused by which acid?Read the answer and worked solution →Which atmospheric event produces nitric acid via electrical discharges?Read the answer and worked solution →What is the principal natural phenomenon emitting acid-forming gases?Read the answer and worked solution →Which airborne pollutant is the most important gas causing acidification?Read the answer and worked solution →In the troposphere, NO2 reacts with which radical to yield nitric acid?Read the answer and worked solution →In the absence of rain, dry deposition accounts for what share of acidity?Read the answer and worked solution →Reaction of acid rain with calcium compounds on marble creates which solid?Read the answer and worked solution →Which toxic element is mobilized from soil minerals by acid rain?Read the answer and worked solution →Which vital nutrient cations are leached from forest soils by acid rain?Read the answer and worked solution →In acidified lakes, most fish eggs fail to hatch when water pH drops below:Read the answer and worked solution →Which substance is added in wet scrubbers to remove SO2 from stack gases?Read the answer and worked solution →Match each atmospheric pollutant with its major anthropogenic source:Read the answer and worked solution →Match each environmental consequence with the pollutants causing it:Read the answer and worked solution →Match each air quality management device with its mechanism:Read the answer and worked solution →Match each particulate pollution term with its health effect:Read the answer and worked solution →

Worked practice questions

Which of the following is a secondary air pollutant?

  1. Ground-level ozone
  2. Carbon monoxide
  3. Sulfur dioxide
  4. Nitric oxide
Show answer and solution

Correct answer: A. Ground-level ozone

Ground-level ozone is formed in the atmosphere from chemical reactions between primary pollutants.

Open this question →

What are the physical properties of carbon monoxide?

  1. Reddish-brown and sharp
  2. Colorless and odorless
  3. Yellowish and pungent
  4. Greenish with no smell
Show answer and solution

Correct answer: B. Colorless and odorless

Carbon monoxide is an invisible, odorless, and highly poisonous gas produced by incomplete combustion.

Open this question →

What is the physical appearance of nitrogen dioxide gas?

  1. Dense colorless gas
  2. Pale yellowish gas
  3. Reddish-brown gas
  4. Dark greenish gas
Show answer and solution

Correct answer: C. Reddish-brown gas

Nitrogen dioxide is distinctly recognizable as a pungent toxic gas with a reddish-brown color.

Open this question →

How to practise

  1. Choose a Atmospheric Pollution question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Atmospheric Pollution practice for ICSE Class 9. Read explanations as you go. No signup form needed to start.

Practise Atmospheric Pollution →

More Chemistry topics

The Periodic TableThe Language of ChemistryAtomic StructureChemical Changes and ReactionsStudy of Gas LawsStudy of the First Element: HydrogenWaterPeriodic Table