Question

5. (a) What is chromatography? Briefly explain paper chromatography
(b) Why is this technique very useful?
(c) State briefly how would you separate the dyes present in blackink​

Answer 1

Answer:

(a) the separation of a liquid mixture by passing it through a material through which some parts of the mixture travel further than others

द्रव-मिश्रण के द्रवों को एक-दूसरे से अलग करने की क्रिया। इस क्रिया में मिश्रण को एक ऐसे पदार्थ विशेष में से पार कराया जाता है जिसमें कुछ द्रव अन्‍यों से अधिक दूर चले जाते हैं; द्रव-मिश्रण का पृथक्‍करण

(b) Very useful technique. People can think you're wrapping the "bad" thing between two positive ones, but I see it as a way to encourage improvement.

We are more prone to remember negative feedback than positive ones, so we need to put the "negative" in perspective. It's something like this:

"There are things you do quite well, and there are things you need to improve. I've seen you can do better in X, but remember, this is just one. Don't identify your whole being with it, you're still good."

(c) 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 we expose a piece of paper with ink on it to a solvent, the ink spreads across the paper when the ink dissolves.

Explanation:

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