How many gram sugar required for 1 percent alcohol in 1 liter of water?

To produce 1 percent alcohol (ethanol) by volume in 1 liter of water, you need approximately 10 grams of ethanol. Since ethanol can be derived from sugar through fermentation, the amount of sugar required will vary based on the fermentation efficiency. Generally, it takes about 2.5 to 3 grams of sugar to produce 1 gram of ethanol, so you would need around 25 to 30 grams of sugar to achieve 1 percent alcohol in 1 liter of water.