List of practice Questions

Match Direction with Orientation of fibers on the web.\[\begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \textbf{Direction} & \textbf{Orientation of fibers} \\ \hline \hline \text{A. Longitudinal orientation} & \text{I. Not oriented} \\ \hline \text{B. Transverse orientation} & \text{II. Fibres laid in machine} \\ \hline \text{direction and width-wise} \\ \hline \text{directions} \\ \hline \text{C. Cross directional web} & \text{III. Fibres laid in a machine} \\ \hline \text{direction} \\ \hline \text{D. Random oriented web} & \text{IV. Fibres laid in a width-wise} \\ \hline \text{direction} \\ \hline \end{array}\]

Objectives of scouring of cotton. 
A. To remove natural fatty matter from textiles. 
B. To remove added fatty matter from textiles. 
C. To remove pectins from textiles. 
D. To remove coloring matter from textiles. 

Process sequence for polyester/wool blended knitted goods (Crisp handle). 
A. Light brushing. 
B. Open steam (allowing full relaxation). 
C. Decatising. 
D. Close cropping on face side of fabric. 

The reactive dyes are applied to Cellulosic fiber in an alkaline dyeing bath, by chemically reacting to form \(\underline{\hspace{2cm}}\) with the hydroxyl group of the fiber.

Desizing of a grey cotton fabric having a starch-based size can not be done using \(\underline{\hspace{2cm}}\)

Which among the following is not a characteristic of a binder?
A. Capable of application by dry cure to form a film, trapping the pigment on the surface of the substrate
B. Provide adhesion of the pigment to the substrate surface
C. Able to crosslink in order to form a protective film
D. Non-elastic properties to allow for bending and stretching of the substrate after printing

The Pad - Dry - Cure process is followed in \(\underline{\hspace{2cm}}\)

The after treatment of certain direct dyes with 0.25-2% copper sulphate and 1% acetic acid for 20-30 mins at 60°C to improve \(\underline{\hspace{2cm}}\)

Vatting process does not accelerate due to \(\underline{\hspace{2cm}}\)

The light fastness of azoic dyed material decreases mainly due to \(\underline{\hspace{2cm}}\)

In the pad-steam process of vat dye, intermediate drying is carried out for \(\underline{\hspace{2cm}}\)

The maximum damage to cotton in sodium hypochlorite is found at \(\underline{\hspace{2cm}}\) pH.

\(\underline{\hspace{2cm}}\) has the highest Biological Oxygen Demand (BOD).

In wet spinning process, the solvent removal and fiber solidification takes place during \(\underline{\hspace{2cm}}\) stage.
The Transmission Electron Microscopy (TEM) is used for the study of \(\underline{\hspace{2cm}}\) structure of fibrous material.

The term wash and wear is used in the case of polyester fiber due to its \(\underline{\hspace{2cm}}\)

The glass fiber is \(\underline{\hspace{2cm}}\) fiber.

The wool fiber exhibits high elastic recovery among the natural fibers due to its \(\underline{\hspace{2cm}}\)

The outstanding features of polyamide fiber are \(\underline{\hspace{2cm}}\)
A. Good dimensional stability. 
B. High wet modulus. 
C. High resistance to alkali. 
D. Low strength and high elongation.

Arrange the following transition temperatures given by Differential Scanning Calorimetry (DSC) in ascending order.
A. Melting temperature
B. Crystallization temperature
C. Degradation temperature
D. Glass transition temperature

Match Fibre with Application.\[\begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \textbf{Fibre} & \textbf{Application} \\ \hline \hline \text{A. Silk fibre} & \text{I. Fire retardant} \\ \hline \text{B. Wool fibre} & \text{II. Directional lustre} \\ \hline \text{C. Nomex fibre} & \text{III. Bulletproof} \\ \hline \text{D. Kevlar fibre} & \text{IV. Thermal insulation} \\ \hline \end{array}\]

The monomer used in the manufacture of Nylon 6 fiber is \(\underline{\hspace{2cm}}\)

On mercerization, moisture regain of cotton fiber \(\underline{\hspace{2cm}}\)

The essential requirements of fiber forming polymers are \(\underline{\hspace{2cm}}\). 
A. Linear polymer 
B. Three dimensional polymer 
C. High molecular weight 
D. Strong lateral forces

The objective of the filament drawing process is to improve the \(\underline{\hspace{2cm}}\) of a fibre.