Which acid makes the atmosphere of Venus have thick white and yellowish clouds?

Sulphuric acid

The correct answer is option 1. Sulphuric acid.

The atmosphere of Venus is primarily composed of carbon dioxide with traces of other gases, including sulfur dioxide and water vapor. Sulfur dioxide reacts with sunlight and other atmospheric components to form sulfuric acid \((H_2SO_4)\). This sulfuric acid is responsible for the thick white and yellowish clouds observed in the atmosphere of Venus.

Option 1, sulphuric acid, is the correct answer. Nitric acid (option 2), acetic acid (option 3), and hydrochloric acid (option 4) are not commonly found in the atmosphere of Venus and are not associated with the formation of its clouds.