Tag: chemistry

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Questions Related to chemistry

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

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

  1. Pulmonary oedema

  2. Airways inflammation

  3. Corneal haze

  4. All of above
Reveal answer Fill a bubble to check yourself
D Correct answer
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.  

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

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

  1. Calcium

  2. Magnesium carboxylate

  3. Copper

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

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

  1. Claus process

  2. Heating process

  3. Limestone

  4. All of above
Reveal answer Fill a bubble to check yourself
A Correct answer
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. 

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

Sulphur dioxide causes ______ in trees.               

  1. Emphysema

  2. Chlorosis

  3. Bronchitis

  4. All of above
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Sulphurous acid is a _________ acid.

  1. dibasic

  2. strong

  3. tribasic

  4. both a and b
Reveal answer Fill a bubble to check yourself
A Correct answer
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.
$2NaOH+{ SO } _{ 2 }\rightarrow { { Na } _{ 2 }SO } _{ 3 }+{ H } _{ 2 }O$

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

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

  1. necrosis

  2. chlorosis

  3. epinasty

  4. lichen
Reveal answer Fill a bubble to check yourself
B Correct answer
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.