Question

Cotton fibres are made of _________.
A. Proteins
B. Starch
C. Lignin
D. Cellulose

Answer 1

The cotton fibres can be made up of the variety of the fabrics ranging from the lightweight voiles and laces to the heavy sailcloths and the thick-piled velveteens, suitable for a great variety of wearing apparel, home furnishings, and industrial uses.

Complete answer: The cotton is a soft fibre that grows around the seeds of the cotton plant. The fibre is most frequently spun into the thread and used to make a soft and breathable textile. The cotton fibres are approved by the natural fibres under the genus Gossypium made up of the cellulose with 1, 4-d-glucopyranose structural units. The cellulose is a polymer made of glucose. The conventional scouring of a cotton fabric involves a high-temperature treatment with a solution containing alkali, wetting agent, and the detergent. The chelating agent is repeatedly added to the scouring solution to the complex and to the heavy metals present in the cotton. The cotton fibres are the purest form of the cellulose which is nature's most abundant polymer. Around ninety per cent of the cotton fibres are of cellulose. All plants consist of the cellulose but to some extent. The fibres such as the flax, jute, ramie and the kenaf from the stalks of the plants are about three-quarters of cellulose.
Therefore, the correct answer is option D.

Note: The cellulose is the most abundant organic molecule seen in nature. The cellulose fibres are the fibres that are made up with the ethers or esters of the cellulose, which can be obtained from the bark, wood or leaves of plants, or from the other plant-based materials.