Average helix angle of Fibrils in bast fibres compared to those in cotton fibre is

Fibre that is soluble in 5% NaOH at boil but not in 60% HCl is

Degree of order in a semi-crystalline fibre is determined by the following equation (where ρ_c, S_a and ρ₁ represent densities of 100%crystlline, 100% amorphous and semi crystalline fibre, respectively) in density gradient measurement principle

First order transition temperature of Nylon 6 fibre is

TGA is used for the purpose of elucidating any one of the following fibre properties

Among the following process, colour can be removed to a maximum extent in