Tag: acid deposition

Questions Related to acid deposition

Match the column I with column II and mark the appropriate choice.

Column I Column II
(A) Peroxyacetyl nitrate (i) Global warming
(B) Polychlorinated biphenyls (ii) Photochemical smog
(C) Dioxides of carbon and sulphur (iii) Water pollutant
(D) IR active molecules (iv) Acid rain
chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. (A) $\rightarrow$ (ii), (B) $\rightarrow$ (iii), (C) $\rightarrow$ (iv), (D) $\rightarrow$ (i)

  2. (A) $\rightarrow$ (iii), (B) $\rightarrow$ (iv), (C) $\rightarrow$ (ii), (D) $\rightarrow$ (i)

  3. (A) $\rightarrow$ (iv), (B) $\rightarrow$ (ii), (C) $\rightarrow$ (iii), (D) $\rightarrow$ (i)

  4. (A) $\rightarrow$ (i), (B) $\rightarrow$ (iii), (C) $\rightarrow$ (ii), (D) $\rightarrow$ (iv)

Show answer
Correct Option: A
Explanation:

Peroxyacetyl nitrate is a secondary pollutant since they form in the atmosphere after the emission of primary pollutants. It is present in photochemical smog.

Surface water getting contaminated with PCB waste generally has high levels of PCBs in sediment, as the PCBs attach to organic matter. PCBs can be slowly released from the sediment into the water and evaporate into the air.

Sulfur dioxide another toxic chemical gas when combines with water and air, forms sulfuric acid, which is the main component of acid rain. Carbon dioxide in the air can dissolve in rainwater to form carbonic acid, $H _{2}CO _{3}$ and contributes to acid rain.

IR active molecules in the atmosphere can increase their vibrational energy by absorbing some of this infrared light, and thus increasing the temperature of the atmosphere resulting in Global warming.

The correct option is A.

Atmosphere of big cities is polluted most by :

chemistry natural resources- air, water and land acid deposition air and air pollution atmospheric pollution

  1. Automobile exhausts

  2. Radioactive fall out

  3. Household waste

  4. Pesticide residue

Show answer
Correct Option: A
Explanation:

The main source of pollution in metro cities is automobile exhausts. 


As greater the city, more the population which uses private transport.


Hence, increase in pollution is caused by automobile exhausts.


Therefore, option A is correct.

The pH of the acid rain is approximately:

chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. 5 to 6

  2. 2 to 3

  3. 6 to 7

  4. >10

Show answer
Correct Option: A
Explanation:

The pH of the acid rain is approximately 5-6.

Acid rain is due to :

chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. Combination of oxides of sulphur with rain water

  2. Combination of oxides of nitrogen with rain water

  3. Formation of $H _{2}SO _{4}$ and $HNO _{3}$

  4. All of the above

Show answer
Correct Option: D
Explanation:

When gases like $NO _2$ and $SO _3$ go into the atmosphere and react with water and form $H _2SO _4$ and $HNO _3$, these acids come along with rain water and hence it is known as acid rain.

What is the nature of normal rain water?

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

  1. Neutral

  2. Acidic

  3. Basic

  4. None

Show answer
Correct Option: B
Explanation:

Normal rain water is slightly acidic (pH is 5-6)

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

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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).