Exemplar Problems

Question:

What are gums made of? Is Fevicol different?

Answer:

Gums are typically made from natural plant or tree exudates, and they are classified as hydrocolloids. These natural gums are often used in various industries, including food, pharmaceuticals, and cosmetics, for their thickening, gelling, stabilizing, and binding properties. Some common natural gums include:

1. Gum Arabic: Obtained from the Acacia tree, it is used as a thickening and stabilizing agent in the food and beverage industry.

2. Xanthan Gum: Produced through fermentation using bacteria, it is used as a thickening and stabilizing agent in food products, such as salad dressings and gluten-free baking.

3. Guar Gum: Derived from guar beans, it is used in food products for its thickening and stabilizing properties.

4. Agar-Agar: Obtained from seaweed, agar-agar is a gelling agent used in various food applications, particularly in desserts and microbiological culture media.

5. Locust Bean Gum (Carob Gum): Derived from the seeds of the carob tree, it is used in the food industry for its thickening and stabilizing properties.

Fevicol is a brand of adhesive manufactured by Pidilite Industries in India. It is not a natural gum; rather, it is a synthetic adhesive primarily composed of polyvinyl acetate (PVA). PVA-based adhesives like Fevicol are widely used for bonding various materials, including wood, paper, cardboard, and fabric.