Question

which of the following statements are incorrect statement for Acid Rain
It corrodes water pipes
It is not harmful for trees and plants It does not cause breathing problem in human being and animals
It damage building and other structures made of stone of metal​

Answer 1

Answer:

Which of the following statements are incorrect statement for Acid Rain?

1. It corrodes water pipes.
2. It does not harmful for trees and plants.
3. It does not cause breathing problem in human being and animals.
4. It damage building and other structures made of stone of metal.

• Option (2), (3) are incorrect statments about acid rain.

Explanation:

1. Acid rain corrodes water pipes (Suppose of the water pipes are made of metal it do corrodes pipes) as metal and stone are damaged due to acid rain.
2. It harms trees, plants, human beings as it's the form of acid substance.
3. It doesn't cause breathing problems in human beings and animals but it causes other health problems in the body.
4. Suppose if the buildings are made of metals/stone then the acid rain would effect the buildings.

Answer 2

ANSWER:

The incorrect options are:

• It is not harmful for trees and plants.

• It does not cause breathing problem in human being and animals.

GIVEN OPTIONS:

• It corrodes water pipes.

• It is not harmful for trees and plants.

• It does not cause breathing problem in human being and animals.

• It damage building and other structures made of stone and metals.

TO FIND:

• The incorrect options:

EFFECTS OF ACID RAIN:

First of all we will see the harmful effects of acid rain for better understanding.

• It damage building and also statues made of marbles, limestone, mortar, etc

• It causes damage to iron and steel.

• It will damage the plants and decrease their growth rapidly.

• It also corrodes water pipes. Also heavy metals like Fe, Pb, Cu will mix with water making the water toxic.

• Acid rain in lakes will have a great impact on the life of aquatic animals.

• Acid rain can also lead to bronchitis, asthma and other chronic respiratory disordes.

So from these points we can say that option 1) It corrodes water pipes and option 4) It damage building and other structures made of stone and metals are correct.

And the remaining options ie. option 2) It is not harmful for trees and plants and option 3) It does not cause breathing problem in human being and animals are incorrect.

EXTRA POINTS:

Acid rain:

The rain containing H₂SO₄, HNO₃, HCl which are formed from oxides of Sulphur and Nitogen gas present in the air is called acid rain. pH of acid rain is 4 - 5, which is less than than that of normal rain water(pH = 5.6)

Conversion of NO to HNO₃:

$\sf NO + O_3 \overset{h \nu}{ \longrightarrow}NO_2 + O_2$

$\sf NO_2 + O_3 \overset{h \nu}{ \longrightarrow}NO_3 + O_2$

$\sf NO_2 + NO_3 \overset{h \nu}{ \longrightarrow}N_2O_5$

$\sf N_2O_5 + H_2O \overset{h \nu}{ \longrightarrow}2HNO_3$

This HNO₃ will come down as acid rain.

Conversion of SO₃ to H₂SO₄:

$\sf 2SO_2 + O_2\overset{h \nu}{ \longrightarrow}2SO_3$

This SO₃ will react with water vapour and come along with rain as acid rain.

After formation of H₂SO₄, HNO₃, HCl, they combine with each other and undergo acidic precipitation which is called as acid rain.

Content of acids in acid rain:

• H₂SO₄ = 60 - 70 %

• HNO₃ = 30 - 40 %

• HCl = very small amounts.