Q1: Leaching of coffee from coffee beans is done by

ANS:A - hot water

Leaching of coffee from coffee beans is typically done using hot water. Explanation:

• Leaching is a process used to extract soluble compounds or substances from a solid material by dissolving them in a liquid solvent.
• In the case of coffee beans, the desired compounds, including flavor compounds, caffeine, and other soluble components, are extracted from the beans by soaking them in hot water.
• Hot water serves as a solvent that dissolves and extracts the soluble compounds present in the coffee beans, resulting in the production of brewed coffee.
• The temperature of the water is important in this process, as hot water facilitates the extraction of flavor compounds and other desired components more efficiently than cold water.
• Other solvents such as hexane, lime water, or dilute sulfuric acid are not commonly used for leaching coffee from coffee beans. Hexane, for example, is often used in solvent extraction processes for other applications, but it is not suitable for extracting flavor compounds from coffee beans as it may extract unwanted compounds and alter the taste of the coffee. Lime water and dilute sulfuric acid are also not suitable solvents for coffee extraction due to potential flavor contamination and safety concerns.