Les instabilités des dispersions 1

Quiz
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Other
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Professional Development
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Hard
valerie bonjean
Used 4+ times
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20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Comment appelle t'on le phénomène qui correspond à des particules qui remontent vers la surface ?
La sédimentation
Le crémage
La floculation
La coalescence
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Un tensioactif est un composé:
amphiphile
hydrophile
lipophile
hydrophobe
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Parmi ces dessins lequel est un tensioactif anionique :
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Les tensioactifs sont répartis en 2 familles. Lesquels?
ioniques et non-ioniques
cationiques et amphotères
anioniques et non ioniques
solubilisantes et antiseptiques
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pouvez- vous précisez l'origine des carraghénates
plantes
céréales
algues
semi-synthétiques
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quel phénomène provoque un amas de particule au centre ?
la pesenteur
la coalescence
la floculation
la temperature
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Que signifie le terme hydrophyle ?
qui aime le gras
qui n'aime pas l'eau
qui aime l'eau
qui n'aime ni le gras ni l'eau
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