Download App

Basic Analytical Techniques — Chemistry STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceChemistryBasic Analytical Techniques4 Marks
Question
Describe the process of paper chromatography.
✓

Answer

Process of paper chromatography:
  • The mixture of the compound to be analysed is dissolved in a suitable solvent and spotted on the chromatography paper about 2 cm from one end of the paper using a glass capillary.
  • The paper is then suspended in a chamber containing the mobile phase.
  • The mobile phase rises up the paper and flows over the spot, due to capillary action.
  • Different solutes are retained differently on the paper depending on their selective partitioning between the two phases. The paper strip so developed, is known as chromatogram.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following questions." from Basic Analytical Techniques→Basic Analytical Techniques — all question types→Chemistry STD 11 Science question papers→Maharashtra Board STD 11 Science question papers→Maharashtra Board question paper generator→

Similar questions

Explain diagonal relationship between lithium and magnesium with respect to:
$i.$ Property of chlorides
$ii.$ Thermal decomposition of their carbonates
→
State Hund’s rule of maximum multiplicity with suitable example.
→
There are $18$ elements in the fourth period of the modern periodic table. Explain.
→
Display electron distribution around the oxygen atom in water molecule and state shape of the molecule, also write H-O-H bond angle.
→
Write one point that differentiates nuclear reations from chemical reactions.
→
State and write mathematical expression for Dalton’s law of partial pressure and explain it with suitable example.
→
Write condensed electronic configurations of the following elements.
$
{ }_{13} Al ,{ }_{49} In ,{ }_{14} Si ,{ }_{50} Sn ,{ }_{15} P ,{ }_{33} As
$
→
Explain: Tautomerism
→
Dipole moment of $NF_3$ is less than that of $NH_3,$ even though $N-F$ bond is more polar than $N-H$ bond. Explain.
→
Show that carbon monoxide and carbon dioxide satisfy the law of multiple proportions.
→