Textile Fibres (MCQ : MODULE 5 - Protein fibers )
Alkali resistance is highest in case of
Question 2: Medulla is
associated with cotton
a cylindrical empty space in wool
nothing but air filled cells in wool fiber
a modified acrylic fiber
Question 3: Which of the following statements is not correct with respect to differences between silk and wool,
Silk is highly sensitive to alkali while wool is not
Silk is smooth while wool has scales on the surface
Silk is mostly composed of a few amino acids while wool has many more
Silk has higher crystallinity than wool
Question 4: The typical value of breaking elongation of wool under standard atmospheric condition is
Question 5: Density of wool in gm/cm3 is
Question 6: ……………..fibre contains 18 amino acids
Question 7: In which chemical wool dissolves?
dilute alkali at boil
Question 8: Degumming is carried out at what temperature?
Question 9: What happens to wool in acid?
Question 10: What is the % of sericin in silk?
Question 11: __________process makes wool anti-felting