H2CO3 is not considered as a component of acid rain because ans. It decreases the pH level of water negligibly small amount. It is not an acid. It is not produced during precipitation. It is harmless to aquatic plants and animals.

The statement "H2CO3 is not considered as a component of acid rain" is not entirely accurate. H2CO3, or carbonic acid, can indeed be a component of acid rain, but it is not the primary cause of the acidity in acid rain.

Here's a step-by-step explanation:

1. Acid rain is primarily caused by sulfuric and nitric acids. These acids are formed from sulfur dioxide (SO2) and nitrogen oxides (NOx) that are released into the atmosphere from burning fossil fuels. These gases react with water, oxygen, and other substances to form sulfuric and nitric acids.

2. Carbonic acid (H2CO3) is formed when carbon dioxide (CO2) dissolves in water. While CO2 is also released into the atmosphere from burning fossil fuels, the resulting carbonic acid is a weak acid and does not contribute significantly to the acidity of rainwater.

3. Therefore, while H2CO3 can be present in acid rain, it is not considered a major component because it does not significantly decrease the pH level of the water.

4. The statement "It is not an acid" is incorrect. H2CO3 is indeed an acid, albeit a weak one.

5. The statement "It is not produced during precipitation" is also incorrect. H2CO3 is produced when CO2 in the atmosphere dissolves in rainwater.

6. The statement "It is harmless to aquatic plants and animals" is not entirely accurate. While H2CO3 is less harmful than sulfuric and nitric acids, it can still contribute to the acidification of bodies of water, which can harm aquatic life. However, its effect is generally less significant than that of the stronger acids.