Tag: acid deposition

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Questions Related to acid deposition

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

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
  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)
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

Atmosphere of big cities is polluted most by :

  1. Automobile exhausts

  2. Radioactive fall out

  3. Household waste

  4. Pesticide residue
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

Acid rain is due to :

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Acid rain may cause :

  1. rusting easier

  2. Stone-cancer in Taj Mahal

  3. Non-fertility of soil

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

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

State whether the following statement is true or false:

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

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
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).