WorksheetsChitin & Chitosan
Total questions: 10
Worksheet time: 5mins
1.Which one is not correct?
Chitosan is heteropolymer.
Chitosan dissolves in acidic solution.
Chitosan is the N-acetylated derivative of chitin.
Chitin is 2-acetamido-2-deoxy-α-D-glucose
2.Which one is not the source of chitin?
shrimp
mushroom
crab
none of these
3.Which one is not correct?
100%N-acetylated chitin is called as chitan.
Chitin has sheet morphology.
Chitin has β-1,4 linkage.
Chitin has 3 polymorphic forms.
4.Which one is not property of chitosan?
Antibacterial
Biocompatibility
Soluble in water
Hemostatic
5.Which one is correct?
α & β-chitin has antiparallel stack structure.
γ-chitin has parallel stack structure.
β-chitin has parallel stack structure.
β-chitin is analogous to cellulose II.
6.Which one is not step for production of chitosan?
hydrolysis
delignification
demineralization
deproteinization
7.Which one is not property of chitin?
low crystalline material
non-toxicity
insoluble material
biodegradability
8.Which one is not correct?
H-bonding in α-chitin is high.
H-bonding in α-chitin is low.
H-bonding results in insolubility in organic solvent.
α-chitin is almost found in shrimp shell.
9.Which one is not application of chitosan?
Cosmetics
wound dressing
waste water treatment
none of these
10.Which one is not correct?
Chitin from diatom has 100% poly-N-acetylglucosamine.
The solubility depends on degree of N-acetylation.
Degree of N-acetylation is ratio of glucosamine to N-acetyl glucosamine.
Chitosan acts as cationic polyelectrolyte.
