Question
The main objective of drawing of synthetic fibre is to impart the molecular ________ along the fibre axis.
This question was previously asked in
CUET PG 2026 Agri-Business Management Question Paper (25-Mar-2026) (Shift 2)
The correct answer is
orientation
Synthetic Fibre Drawing: Achieving Molecular Orientation
The primary goal during the process of drawing synthetic fibres is to improve their strength and mechanical properties. This is achieved by aligning the long polymer molecules that make up the fibre.
Molecular Alignment Explained
- Drawing Process: Synthetic fibres, after extrusion, are stretched mechanically. This process is called drawing.
- Molecular Movement: During drawing, the randomly arranged or partially aligned polymer chains within the fibre are pulled and forced to align parallel to the fibre's length (axis).
- Resulting Property: This alignment, known as molecular orientation, significantly increases the tensile strength and reduces the extensibility of the fibre. The molecules are packed more closely and their intermolecular forces become more effective along the axis.
- Why Orientation? While drawing can affect crystallinity, the main objective is the alignment (orientation) of chains along the axis to impart strength. Elongation is a consequence, and randomness is reduced, not imparted.
Therefore, the main objective of drawing synthetic fibre is to impart molecular orientation along the fibre axis.
Was this answer helpful?
Similar Questions
- The major constituent of cotton fibre is _________.
- The acrylic fibre is manufactured by wet spinning process rather than melt spinning process due to ________ of acrylic polymer.
- The Scanning Electron Microscopy (SEM) gives the ________ features of material.
- The glass transition temperature of polyethylene polymer is low in comparison with that of polypropylene fibre because of ________ molecular chain of polyethylene.
- The polyester (PET) fibre spun by high speed spinning technology shows high crystalline orientation but low birefringence due to ________.
- On mercerization, the strength and moisture absorption capacity of cotton fibre increases. The reason for increase is ________.
- The glass marbles are subjected to melting process at the temperature of ________ before feeding to spinneret for its spinning.
- The primary purpose of ginning process is to ________.
- The chute feed system is beneficial over the formation of lap due to ________.
- In the draw frame, the number of sliver ends to be fed to the machine are limited due to ________ in the mass variation of sliver coming out from the draw frame.
Important Questions from Miscellaneous
- Which of the following relationships is/are not true?
(A). Most probable velocity = $\sqrt{\frac{2RT}{M}}$
(B). PV = $\frac{3}{2}kT$
(C). Compressibility factor Z = $\frac{pV}{nRT}$
(D). Average kinetic energy of gas = $\frac{1}{2}kT$
Choose the correct answer from the options given below - Match List-I with List-II
List-I List-II Electronic Configuration First Ionisation energy (kJ mol$^{-1}$) (A). ns$^2$ (I). 2100 (B). ns$^2$np$^1$ (II). 1400 (C). ns$^2$np$^3$ (III). 800 (D). ns$^2$np$^6$ (IV). 900
Choose the correct answer from the options given below: - The shielding constant of a 2p electron (calculated using Slater's rules) is
- Match List-I with List-II
List-I List-II Spectroscopy Property (A). Raman (I). Polarizability (B). FTIR (II). Dipole Moment (C). UV-Visible (III). Absorbance (D). NMR (IV). Spin
Choose the correct answer from the options given below: - The structure of protein comprises of:
(A). Primary structure of protein is associated with amino acids
(B). Secondary structure of protein is associated to peptides
(C). Tertiary structure of protein is associated with polypeptide chains
(D). Quaternary structure of protein is associated with polypeptide chains
Choose the correct answer from the options given below:
Need Expert Advice?
Upcoming Exams
GATE
February 06, 2027
Test Series
CUET
CUET PG Psychology (HUQP20) 2026 Mock Test Series
10 Tests
781 Attempts
3.7(15)
English
More Questions from CUET PG
