Fiber and Dye Analysis Quiz

What is the smallest unit of a textile material that has length many times greater than its diameter?

• Thread

• Fibre

• Fabric

• Yarn

Which of the following is a natural fiber obtained from the fleece of sheep?

• Silk

• Cotton

• Wool

• Polyester

What type of synthetic fiber is known for its strength and elasticity?

• Lyocell

• Rayon

• Nylon

• Acrylic

Which test is used to classify fiber based on their behavior when exposed to heat?

• Floatation Test

• Burning Test

• Dye Analysis

• Solubility Test

What is the purpose of a floatation test in fiber analysis?

• To measure the diameter of the fiber

• To identify the origin of the fiber

• To assess the density and composition of the fiber

• To determine the color of the fiber

Which of the following dyes requires an acidic environment for dyeing?

• Reactive Dyes

• Acid Dyes

• Direct Dyes

• Basic Dyes

What is the significance of fiber color in forensic analysis?

• It can lend increased value to a fabric association

• It indicates the age of the fiber

• It helps in determining the origin of the fiber

• It determines the strength of the fiber

How does birefringence help in fiber analysis?

• By determining the color of the fiber

• By revealing the optical properties of the fiber

• By identifying the chemical composition of the fiber

• By measuring the fiber's diameter

What is the primary function of mordants in dyeing?

• To dissolve the dye

• To enhance color intensity

• To fix the dye to the fiber

• To change the color of the dye

Which microscopy technique provides high-resolution imaging of fiber surfaces?

• Optical Microscopy

• Polarized Light Microscopy

• Scanning Electron Microscopy

• Atomic Force Microscopy