Tag: natural resources- air, water and land

Questions Related to natural resources- air, water and land

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

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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

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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

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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

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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

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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

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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

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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.
$2NaOH+{ SO } _{ 2 }\rightarrow { { Na } _{ 2 }SO } _{ 3 }+{ H } _{ 2 }O$

The loss or reduction of chlorophyll in the leaves is termed as:

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

  1. necrosis

  2. chlorosis

  3. epinasty

  4. lichen

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Correct Option: B
Explanation:

Necrosis is the death of body tissue. It occurs when there is some infection or the supply to the part of the plant has stopped. This can also occur from injury, radiation or chemicals.
Chlorosis is yellowing of leaf tissue due to lack of chlorophyll. Possible causes of chlorosis include poor drainage, damaged roots, and compacted roots.
Epinasty is increased growth on the upper surface of an organ or part, causing it to bend downward.
Lichens are made up of two or more closely interacting organisms, a fungus and one or more partners called photobionts. 
Thus, the correct answer is option B. 

Choose the property of sulfuric acid, which is relevant to the preparations of : 
    Ethene from ethanol :

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

  1. Oil. acid (typical acid properties)

  2. Non-volatile acid

  3. Oxidizing agent

  4. Dehydrating agent

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Correct Option: D

In the given equation $S + 2H _2SO _4 \rightarrow 3SO _2+ 2H _2O$: What is the role played by conc. $H _2SO _4$  ?

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

  1. Non-volatile acid

  2. Oxidising agent

  3. Dehydrating agent

  4. None of the above.

Show answer
Correct Option: B
Explanation:

Sulphur is oxidised to sulphur dioxide by sulphuric acid which acts as oxidising agent.