All vegetable fibres leave ………………… when burnt?

Vegetable fibers, such as cotton, linen, and hemp, are cellulose-based and tend to burn quickly and completely, leaving behind a soft, powdery ash. This is because they are primarily composed of cellulose, which is a highly combustible material.

Other choices do not fit as well. Each has a reason why it does not answer the question correctly. Understanding why wrong answers are incorrect helps reinforce the right answer.

This knowledge is important for Home Economics. It helps in daily life and builds practical skills for managing homes and families effectively.