Acid Rain Quiz on

What is acid rain?

• Rain that is always acidic

• Rain that falls during a storm

• Rain with high sulfur and nitrogen content

• Rain that is very cold

Answer explanation

Acid rain is primarily caused by pollutants like sulfur and nitrogen oxides, which combine with water in the atmosphere, leading to rain with high sulfur and nitrogen content. This makes the correct choice the one that describes this phenomenon.

Who coined the term 'acid rain'?

• Isaac Newton

• Marie Curie

• Albert Einstein

• Robert Angus Smith

Answer explanation

The term 'acid rain' was coined by Robert Angus Smith in the 19th century while studying the effects of industrial pollution on precipitation. He is recognized for his work in environmental chemistry.

What is the normal pH of rainwater?

• 4.0

• 2.4

• 5.6

• 7.0

Answer explanation

The normal pH of rainwater is around 5.6 due to the presence of dissolved carbon dioxide, which forms carbonic acid. This makes it slightly acidic, unlike pure water which has a neutral pH of 7.0.

What is one major natural cause of acid rain?

• Volcanic eruptions

• Car exhaust

• Burning coal

• Factory emissions

Answer explanation

Volcanic eruptions release sulfur dioxide and other gases into the atmosphere, which can combine with water vapor to form sulfuric acid, a key component of acid rain. This makes volcanic eruptions a major natural cause of acid rain.

What is a major anthropogenic cause of acid rain?

• Lightning

• Natural gas leaks

• Volcanic eruptions

• Burning fossil fuels

Answer explanation

Burning fossil fuels releases sulfur dioxide and nitrogen oxides into the atmosphere, which react with water vapor to form acid rain. This human activity is a major contributor to the problem, unlike natural events.

What effect does acid rain have on plants?

• Makes them bloom more

• Increases their height

• Causes yellowing of leaf tissue

• Makes them grow faster

Answer explanation

Acid rain can lead to the leaching of essential nutrients from the soil, causing stress to plants. This stress often results in the yellowing of leaf tissue, a sign of nutrient deficiency, making 'Causes yellowing of leaf tissue' the correct answer.

What happens to soil due to acid rain?

• It becomes richer in nutrients

• It loses nutrients

• It becomes more alkaline

• It becomes dry

Answer explanation

Acid rain lowers the pH of soil, making it more acidic. This acidity can leach essential nutrients like calcium and magnesium from the soil, leading to nutrient loss, which negatively impacts plant growth.

Which of the following is a prevention tip for acid rain?

• Ignore the problem

• Increase car usage

• Check emissions of nitrogen and sulfur oxides

• Use more fossil fuels

Answer explanation

Checking emissions of nitrogen and sulfur oxides is crucial because these pollutants contribute to acid rain. By monitoring and reducing their emissions, we can help prevent acid rain and its harmful effects.

What is one effect of acid rain on buildings?

• Increases their value

• Makes them look new

• Causes extensive damage

• Makes them stronger

Answer explanation

Acid rain contains harmful acids that can corrode and deteriorate building materials, leading to extensive damage over time. This makes 'Causes extensive damage' the correct choice.

What is the pH level of acid rain?

• 2.4

• 7.0

• 4.5

• 5.6

Answer explanation

The pH level of acid rain is typically around 4.5 to 5.6, but it can drop to as low as 2.4 in more polluted areas. Therefore, 2.4 is a correct representation of acid rain's acidity.