Tag: sulfur and its oxides

Questions Related to sulfur and its oxides

Which of the following is the most important man-made source of sulfur dioxide?

chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

  1. Fossil fuel combustion

  2. Conversion of wood pulp to paper

  3. Both a and b

  4. Decaying of plant matter

Show answer
Correct Option: C
Explanation:

The most important man-made sources of sulfur dioxide are fossil fuel combustion, smelting, manufacture of sulfuric acid, conversion of wood pulp to paper, incineration of refuse and production of elemental sulfur.

The air pollution by $SO _2$ has which of the following effects on human beings?

chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

  1. Pulmonary oedema

  2. Airways inflammation

  3. Corneal haze

  4. All of above

Show answer
Correct Option: D
Explanation:

The air pollution by $SO _2$ can cause Corneal haze, breathing difficulty, airways inflammation, eye irritation, psychic alterations, pulmonary oedema, heart failure and circulatory collapse in human beings.  

Which of the following fuel additives may be used in marine engines to lower the emission of sulfur dioxide gases?

chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

  1. Calcium

  2. Magnesium carboxylate

  3. Copper

  4. Both A and B

Show answer
Correct Option: D
Explanation:

Fuel additives such as calcium additives and magnesium carboxylate may be used in marine engines to lower the emission of sulfur dioxide gases into the atmosphere.

In humans, sulphur dioxide causes:

chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

  1. asthma

  2. dwarfing

  3. chlorosis

  4. all of the above

Show answer
Correct Option: A
Explanation:

Sulphur dioxide is an air pollutant that has many health effects on humans. It causes asthma, bronchitis, emphysema in humans. It is particularly poisonous to trees causing Chlorosis and dwarfing.

Forest fires are _____ sources of sulphur dioxide.

chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

  1. man-made

  2. natural

  3. both a and b

  4. it is not a source of sulphur dioxide

Show answer
Correct Option: B
Explanation:

Sulphur dioxide is produced by both man-made and natural processes. Natural processes include volcanoes, forest fires and decaying plant matter.

The _________ is used in refineries to produce sulfur as a byproduct.

chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

  1. Claus process

  2. Heating process

  3. Limestone

  4. All of above

Show answer
Correct Option: A
Explanation:

Sulfur dioxide is a major air pollutant and has significant impacts upon human health. In addition, the concentration of sulfur dioxide in the atmosphere can influence the habitat suitability for plant communities, as well as animal life. Sulfur can also be removed from fuels before burning, preventing formation of $SO _2$ when the fuel is burnt. The Claus process is used in refineries to produce sulfur as a byproduct. 

Sulphur dioxide causes ______ in trees.               

chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

  1. Emphysema

  2. Chlorosis

  3. Bronchitis

  4. All of above

Show answer
Correct Option: B
Explanation:

Oxides of sulphur are produced when sulphur containing fossil fuels are burnt. Sulphur dioxide is a poisonous gas harmful to both animals and plants. It is poisonous to trees, causing dwarfing and Chlorosis.

Which of the following is a natural source of sulphur dioxide?

chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

  1. Volcanoes

  2. Home heating

  3. Metal manufacturing

  4. Power stations

Show answer
Correct Option: A
Explanation:

Sulphur dioxide can be formed naturally by volcanoes, forest fires etc or by anthropogenic (man-made) sources like power stations, home heating and metal manufacturing.

______ is the main sink for suphur dioxide.

chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

  1. Air

  2. Water

  3. Soil

  4. None of above

Show answer
Correct Option: B
Explanation:

Since $SO _2$ is acidic in nature, $SO _2$ sinks are oxidation by $OH^-$ and deposition on wet surfaces. So, the ocean i.e. water is the best sink for $SO _2$.

Sulphurous acid is a _________ acid.

chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

  1. dibasic

  2. strong

  3. tribasic

  4. both a and b

Show answer
Correct Option: A
Explanation:

Sulphurous acid is produced by dissolving sulphur dioxide in water. It is a weak dibasic acid known in the form of its salts e.g. sodium sulphite. It is unstable has has never been isolated as a pure compound.
$2NaOH+{ SO } _{ 2 }\rightarrow { { Na } _{ 2 }SO } _{ 3 }+{ H } _{ 2 }O$