In which of the following colloids is the dispersing medium a liquid ?
Mist
Foam
Jelly
Shaving cream
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC CDS-2 – 2024
– Identifying the dispersed phase and dispersing medium is key to classifying colloids.
– Jelly is a gel where a liquid is dispersed in a solid network. The dispersing medium is effectively solid.
– Foam is a colloid where gas is dispersed in a liquid (liquid foam) or solid (solid foam). While ‘Foam’ could be ambiguous, Shaving cream is a specific example of a liquid foam.