Chemistry 9th Chap 11 : Topic 6 - Maryam Publications

Chemistry Chapter 11 : Topic 6

Environmental Protection Strategies

1 / 20

Which of the following strategies is most effective in reducing climate change caused by greenhouse gas emissions?

A) Increasing industrial burning of petroleum

B) Replacing fossil fuels with renewable energy sources like solar and wind

C) Increasing the use of coal-based power plants

D) Increasing fossil fuel combustion for energy demand

2 / 20

How does planting trees help in reducing the effects of climate change?

A) Trees increase methane production.

B) Trees absorb carbon dioxide during photosynthesis.

C) Trees release carbon dioxide into the atmosphere.

D) Trees increase atmospheric pressure.

3 / 20

Why is reducing livestock farming considered a climate change mitigation strategy?

A) Livestock emits methane, a strong greenhouse gas.

B) Livestock produces oxygen in large quantities.

C) Livestock reduces carbon dioxide levels naturally.

D) Livestock increases rainfall directly.

4 / 20

Which energy source is considered most environmentally friendly for reducing climate change?

A) Petroleum energy

B) Coal energy

C) Solar energy

D) Diesel energy

5 / 20

How does hydrogen act as a cleaner fuel alternative?

A) It produces sulfur dioxide during combustion.

B) It increases carbon emissions.

C) It releases particulate matter.

D) It produces only water as a byproduct.

6 / 20

Which of the following best explains why reducing fossil fuel use helps climate control?

A) Fossil fuels absorb oxygen from air.

B) Fossil fuels release greenhouse gases like CO₂ when burned.

C) Fossil fuels increase atmospheric nitrogen.

D) Fossil fuels reduce sunlight intensity.

7 / 20

What is the main environmental benefit of using wind energy?

A) It emits no greenhouse gases during electricity generation.

B) It produces methane gas.

C) It increases acid rain formation.

D) It produces sulfur dioxide.

8 / 20

Which strategy directly reduces methane emissions from agriculture?

A) Increasing deforestation

B) Increasing fertilizer use

C) Reducing livestock farming

D) Increasing coal burning

9 / 20

What is the primary function of catalytic converters in vehicles?

A) Convert harmful gases into less harmful substances

B) Produce oxygen gas from exhaust

C) Increase carbon dioxide emissions

D) Increase fuel consumption efficiency only

10 / 20

Which gases are mainly reduced by catalytic converters?

A) Oxygen and nitrogen

B) Carbon monoxide and nitrogen oxides

C) Helium and argon

D) Carbon dioxide and methane

11 / 20

Why is reducing sulfur dioxide emissions important for preventing acid rain?

A) SO₂ produces water directly.

B) SO₂ increases oxygen levels.

C) SO₂ forms sulfuric acid in atmosphere.

D) SO₂ increases nitrogen concentration.

12 / 20

What is flue gas desulfurization mainly used for?

A) Increasing carbon emissions

B) Removing sulfur dioxide from industrial emissions

C) Increasing oxygen in exhaust gases

D) Producing hydrogen gas

13 / 20

Which substance is commonly used in flue gas desulfurization?

A) Methane

B) Sodium chloride

C) Carbon dioxide

D) Calcium oxide (lime)

14 / 20

How does reducing fossil fuel use help in controlling acid rain?

A) It decreases emissions of sulfur dioxide and nitrogen oxides

B) It reduces oxygen production

C) It increases atmospheric humidity

D) It increases carbon monoxide levels

15 / 20

Which combination of strategies is most effective for reducing both climate change and acid rain?

A) Renewable energy use and emission control technologies

B) Increased industrial smoke release

C) More coal use and deforestation

D) Increased livestock farming and fossil fuel burning

16 / 20

Why are electric vehicles considered environmentally beneficial?

A) They burn fossil fuels efficiently.

B) They increase methane emissions.

C) They produce no exhaust gases during operation.

D) They emit sulfur dioxide.

17 / 20

Which strategy helps reduce both greenhouse effect and acid rain simultaneously?

A) Increasing livestock farming

B) Increasing coal power plants

C) Increasing petroleum use

D) Using clean energy and catalytic converters

18 / 20

Why is afforestation considered an effective environmental strategy?

A) It decreases oxygen production.

B) It absorbs carbon dioxide and reduces greenhouse gases.

C) It increases CO₂ levels.

D) It increases sulfur emissions.

19 / 20

What is the main purpose of reducing emissions at the source?

A) To prevent formation of pollutants like CO₂, SO₂ and NOₓ.

B) To increase atmospheric pressure.

C) To increase fuel consumption.

D) To increase industrial production.

20 / 20

Which statement best describes renewable energy’s role in environmental protection?

A) It replaces polluting energy sources with clean alternatives.

B) It increases fossil fuel dependency.

C) It produces sulfur compounds.

D) It increases greenhouse gas emissions.

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