Acid rain contains

Sulphuric acid
Hydrochloric acid
Oxalic acid
Acetic acid

The correct answer is A. Sulphuric acid.

Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it has a high level of hydrogen ions (low pH). It can have harmful effects on plants, aquatic animals, and infrastructure.

The main cause of acid rain is the emission of sulfur dioxide and nitrogen oxides into the atmosphere from burning fossil fuels such as coal, oil, and natural gas. These gases react with water vapor in the atmosphere to form sulfuric acid and nitric acid, which then fall to Earth as acid rain.

Acid rain can have a number of negative effects on the environment. It can damage trees and other plants, making them more susceptible to disease and pests. It can also kill fish and other aquatic animals, and can damage infrastructure such as buildings and bridges.

Acid rain can also have a negative impact on human health. It can irritate the eyes, nose, and throat, and can cause respiratory problems. It can also increase the risk of cancer.

There are a number of things that can be done to reduce acid rain. One is to reduce the emissions of sulfur dioxide and nitrogen oxides from power plants and other sources. Another is to plant trees, which can help to absorb the acids in the atmosphere.

Acid rain is a serious problem that can have a number of negative effects on the environment and human health. There are a number of things that can be done to reduce acid rain, and it is important to take action to address this problem.

Here is a brief explanation of each option:

  • Sulphuric acid is a strong acid that is found in acid rain. It is formed when sulfur dioxide reacts with water vapor in the atmosphere.
  • Hydrochloric acid is a strong acid that is found in some industrial processes. It is not a major component of acid rain.
  • Oxalic acid is a weak acid that is found in some plants. It is not a major component of acid rain.
  • Acetic acid is a weak acid that is found in vinegar. It is not a major component of acid rain.