English 175-200

The light resistance of fibres

• Physical property

• Chemical property

• Microbiological property

• Mechanical property

• Geometrical property

Water resistance of the fibres

• Chemical property

• Microbiological property

• Mechanical property

• Geometrical property

• Physical property

A distinction is made between the following types of cotton

• short fibre, medium fibre and thin fibre

• long fibre, small fibre and thick fibre

• hard fibre, soft fibre and mild fibre

• hollow fibre, complex fibre and simple fibre

• long fibre, hollow fibre and thick fibre

Short fiber cotton gives the shortest fiber, its length

• less than 26 mm

• more than 26 mm

• average length of 30-35 mm

• average length of 50-55 mm

• average length of 60-65 mm

Medium-fiber cotton length

• average length of 30-35 mm

• less than 26 mm

• more than 26 mm

• average length of 50-55 mm

• average length of 60-65 mm

Thin-fiber cotton length

• average length of 35-45 mm

• less than 26 mm

• more than 26 mm

• average length of 50-55 mm

• average length of 60-65 mm

Cotton is sown when the soil temperature reaches to……

• 13-15оС

• 23-25оС

• 33-35оС

• 19-25оС

• 23-35оС

In how many days the first flowers appear on the formed bush, which live only one day in cotton production.

• in 60-70 days

• in 20-30 days

• in 30-40 days

• in 50-55 days

• in 45-50 days

In cotton production after the fall of the flower begins to develop from the ovary of the fruit.

• a ball

• a leaf

• a stalk

• a fiber

• a flower

In cotton production. The process of gradual layering of cellulose on the walls of the fibers.

• the process of maturation of the fibers

• the process of fulling of the fibers

• the process of loosing of the fibers

• the process of saturation of the fibers

• the process of cleaning of the fibers