Chapter 20 Chemistry in the Atmosphere

Chapter 20 Chemistry in the Atmosphere

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

Multiple Choice Questions

The regions of the earth’s atmosphere listed from lowest altitude to highest altitude are:

1. mesosphere, troposphere, thermosphere, stratosphere.
   B. troposphere, stratosphere, mesosphere, thermosphere.
   C. troposphere, thermosphere, mesosphere, stratosphere
   D. thermosphere, stratosphere, troposphere, mesosphere.
   E. thermosphere, mesosphere, troposphere, stratosphere.

Bloom’s Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 20.01
Subtopic: Atmospheric Chemistry
Topic: Environmental Chemistry

2. The most prevalent noble gas in our atmosphere is
   A.helium.
   B. neon.
   C. argon.
   D. krypton.
   E. xenon.

Bloom’s Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 20.01
Subtopic: Atmospheric Chemistry
Topic: Environmental Chemistry

The CO₂ content of Earth’s atmosphere is approximately

1. 4%.
   B. 0.4%.
   C. 0.04% (400 ppm).
   D. 40 ppm.
   E. 4 ppm.

Bloom’s Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 20.01
Subtopic: Atmospheric Chemistry
Topic: Environmental Chemistry

4. Which one of the following reactions is an example of nitrogen fixation?
   A.

N₂O₅(g) ® NO₃(g) + NO₂(g)

N₂(g) + O₂(g)  ® 2NO(g)

3NO₂(g) + H₂O(l)  ® 2HNO₃(aq) + NO(g)

2NO(g) + O₂(g)  ® 2NO₂(g)

2NH₃(g) ® 3H₂(aq) + N₂(g)

Bloom’s Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 20.01
Subtopic: Atmospheric Chemistry
Subtopic: Cycling of Elements
Topic: Environmental Chemistry

One of the steps in the fixation of nitrogen by lightening is given below.
2NO₂(g) + H₂O(l)  ® HNO₂(aq) + HNO₃(aq)
In this reaction, is the element nitrogen oxidized or reduced?

1. Nitrogen is oxidized in this reaction.
   B. Nitrogen is reduced in this reaction.
   C. Nitrogen is oxidized and reduced in this reaction.
   D. Nitrogen is neither oxidized nor reduced in this reaction.

Bloom’s Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 20.01
Subtopic: Atmospheric Chemistry
Subtopic: Cycling of Elements
Topic: Electrochemistry
Topic: Environmental Chemistry