How do you visualize colourless compounds after separation in TLG and Paper Chromatography?

Why do we see bands separating in column chromatography?

How do you perceive the colour of an object?

How do you define energy ?

How do you prepare your own herbarium sheets? What are the different tools you carry with you while collecting plants for the preparation of a herbarium? What information should a preserved plant material on the herbarium sheet provide for taxonomical studies?

How do you get ideal gas equation from the gas laws?

How do you express the bond strength in terms of bond order?

How do you distinguish between hypogeal germination and epigeal germination? What is the role of cotyledon (s) and the endosperm in the germination of seeds?

What problems do you get after playing colours on Rang Panchami?

How do you distinguish between solid , liquid and gaseous states ?