Which of the following is NOT a method of dyeing?

Reactive dyeing is indeed a method used in the dyeing process, so the answer indicating it is not a method of dyeing is incorrect.

Foam dyeing, pad dyeing, and jig dyeing are all recognized techniques in the textile dyeing process. Foam dyeing involves the use of foaming agents to apply dye, allowing for efficient penetration into the fabric. Pad dyeing involves passing fabric through a dye solution and a pair of rollers, which helps to uniformly apply the dye to the fabric's surface. Jig dyeing is a continuous process where fabric is moved back and forth through a dye bath, ensuring consistent and thorough dye coverage.

Understanding these methods allows students to recognize the variety of approaches used in textile dyeing, each with specific applications and benefits in producing dyed fabric.