Cotton Evaluation Quiz

• Cotton burns with a bright flame and produces a strong odor.
• Cotton dissolves completely in a 5% potassium hydroxide solution.
• Cotton can be distinguished from wool, silk, and nylon by its white ash residue. (correct)
• Cotton is made up of 90% cellulose and 10% impurities.

• By its ability to dissolve in sulfuric acid
• By its ability to burn with a flare and leave a white ash (correct)
• By its solubility in potassium hydroxide solution
• By the presence of a blue color when reacted with iodine

• Cellulose (correct)
• Water
• Fats and oils
• Impurities

<p>It burns with a flare and leaves a small white ash (B)</p> Signup and view all the answers

<p>Reacting the cotton with iodine and sulfuric acid (B)</p> Signup and view all the answers