Tag: chemistry

Questions Related to chemistry

Acid rain may cause :

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

  1. rusting easier

  2. Stone-cancer in Taj Mahal

  3. Non-fertility of soil

  4. All of the above

Show answer
Correct Option: D
Explanation:

Acid rain contains acids formed due to combination of sulphur and nitrous oxides present in the smoke discharged by the industries. These acids are highly corrosive in nature and cause rusting of metal assemblies. Also can affect structures like Taj Mahal by reacting with their material of construction. Moreover, can affect the fertility of soil. So, All of the above is the answer.

Which of the following is correct about bleaching action of $\mathrm{S}\mathrm{O} _{2}$?

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

  1. Oxidation property

  2. Hydrolysis

  3. Reduction property

  4. Its acidic nature

Show answer
Correct Option: C
Explanation:

Bleaching action of $SO _{2}$ is due to its reduction property. It takes up oxygen from coloured material and makes it colourless.

Which of the following acids is used in car batteries?

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

  1. Nitric acid

  2. Hydrochloric acid

  3. Sulphuric acid

  4. Carbonic acid

Show answer
Correct Option: C
Explanation:

Lead-acid batteries are made up of plates of lead and separate plates of lead dioxide, which are submerged into an electrolyte solution of about $38%$% $H _2SO _4$ and $62$% water.

The burning of fossil fuels is the main source of which of the following pollutants?

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

  1. Nitrogen

  2. Carbon monoxide

  3. Sulphur dioxide

  4. Particulate matter

Show answer
Correct Option: C
Explanation:

Fossil fuels are made of sulphur so on burning they form sulphur dioxide as a product.

State whether the following statement is true or false:

The chemical formula of king of chemicals, sulphuric acid is $H _2SO _4$.

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

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

The chemical formula of king of chemicals, sulphuric acid is $H _2SO _4$. It is a dibasic acid and forms two types of salts
 $\displaystyle NaHSO _4$ (sodium hydrogen sulphate) and $\displaystyle Na _2SO _4$ (sodium sulphate).

Which statement describes a disadvantage of sulfur dioxide?

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

  1. It can be used as a bleach in making wood pulp

  2. It can be used to kill bacteria in food

  3. It can be used to manufacture sulfuric acid

  4. It can dissolve the limestone in statues

Show answer
Correct Option: D
Explanation:

$\text{sulphur dioxide can dissolve the limestone.}$


$CaCO _3+H _2O \rightarrow Ca(OH) _2+CO _2$
$Ca(OH) _2+SO _2 \rightarrow CaSO _3+H _2O$

Sulphuric acid can not be used:

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

  1. as a pickling agent

  2. in lead storage batteries

  3. in making of Rayon fibre

  4. in preparation of white paint

Show answer
Correct Option: D
Explanation:

Sulphuric acid is oxidising agent and can not be used in white paint as it may react with some materials and produce sulphides which are usually coloured.

Sulphuric acid can be used as:

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

  1. hygroscopic agent

  2. oxidising agent

  3. sulphonating agent

  4. efflorescent

Show answer
Correct Option: A,B,C
Explanation:

$H _2SO _4$ acid can act as oxidising agent when it is concentrated and can also sulphonate aromatic compounds.

$SO _2$ is produced by:

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

  1. petrol combustion

  2. smelting operation

  3. Both A and B

  4. ozone depletion

Show answer
Correct Option: C
Explanation:

Sulfur dioxide is the product of the burning of sulfur or of burning materials that contain sulfur.  It is produced by petrol combustion, coal combustion, petrolrefining and smelting operation.

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.