Question

Someone please asnwer all four

Thank You

Answer 1

1. Isopropanol is a rubbing alcohol antiseptic. No, it doesn't have any other names.

2. Precautions must be taken while using anything that is not simple..

• Keep it away from fire as it contains alcohol
• Do not swallow it
• keep it away from your eyes

3. Colored pen dye have many colours like vibgyor i.e. red, orange, yellow, green, blue, indigo and purple.

4. Chromatography is a method of separating out materials from a mixture. Ink is a mixture of several dyes and therefore we can separate those colors from one another using chromatography. When ink is exposed to certain solvents the colors dissolve and can be seperated out. When we expose a piece of paper with ink on it to a solvent, the ink spreads across the paper when the ink dissolves.