Coir fibre is classified as natural cellulosic........fibre.

Percentage of crystalline and amorphous regions in cotton fibre is

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