Paper Chromatography (Viva Voce) : Class 11 : Biology : Amrita Online Lab

About
In the news
Workshops
Training
Registration
Contact us
Login

Languages

you are here->home->Biology->Class 11->Paper Chromatography

Paper Chromatography

Theory

Theory

Procedure
Animation
Simulator
Video
Viva Voce
Resources
Feedback

	1)	The R_f value is calculated as
		R_f of compound=(Distance travelled by compound)/(Distance travelled by solvent) R_f of compound=(Distance travelled by solvent)/(Distance travelled by solute) R_f of compound=(Distance travelled by solvent)/(Distance travelled by compound) R_f of compound=(Distance travelled by compound)/(Distance travelled by solute)

	2)	What are the four primary pigments in a plant leaves?
		Chlorophyll a, chlorophyll d, xanthophylls and carotenoids Chlorophyll a, chlorophyll c, chloroplast and carotenoids Chlorophyll a, chlorophyll d, chloroplast and carotenoids Chlorophyll a, chlorophyll b, xanthophylls and carotenoids

	3)	What is chromatography?
		A simple technique used to separate solvent from solution. A simple technique used to separate solution of different concentration. A technique used to separate molecules on the basis of colour. A technique used to separate molecules on the basis of differences of size, shape, mass, charge, solubility and adsorption properties.

	4)	The term chromatography is derived from Greek. Chroma means ___________ and Graphe means_________.
		Chroma = writing and Graphe = colour Chroma = Solution and Graphe = Colours Chroma = colour and Graphe = writing Chroma = pigments and Graphe = writing

	5)	What is the colour of chlorophyll a?
		Yellow Dark green Orange Yellowish-green

	6)	How can the different compounds in a mixture in paper chromatography be identified?
		Using Rf value. Using Solute concentration. Using wavelengths of visible light. Using solvent concentration.

	7)	Given below are the steps in the preparation of a temporary mount of a stained leaf peel. i) Grind the spinach leaves using the mortar and pestle. ii) When solvent rises about 3/4th of the way up the strip, remove the strip carefully and let it dry. iii) Using a thread, hang the filter paper strip into the chromatographic chamber that contains ether acetone solvent. iv) Put a drop of the pigment extract in the middle of the filter paper strip. Which of the following is the correct sequence of steps?
		i, iv, iii, ii i, ii, iii, iv iv, iii, ii, i i, iii, iv, ii

Cite this Simulator:

Developed by Amrita Vishwa Vidyapeetham & CDAC Mumbai. Funded by MeitY (Ministry of Electronics & Information Technology)

English हिंदी മലയാളം मराठी