Dyes

3. A naturally occurring vat dye that imparts blue colour is known as _____________

• a) henna

• b) french marigold

• c) indigo

• d) walnut rind

4.___________ is known as king of all natural dyes

• a) Cutch

• b) Indian madder

• c) Pomegranate rind

• d) Indigo

5. The natural dyes which do not require mordanting for development of colour is known as ____________.

• a) vegetable dyes

• b) animal dyes

• c) substantive dyes

• d) adjective dyes

A method of applying color to textiles using color agents called dyes

• Dyeing

• Applied Design

• Overrun

• Printing

Small color molecules that can be fixed on a fiber surface

• Carrier

• Dye

• Auxilliary

• Electrolyte

Dyeing can not be applied at following stage

• Yarn

• Fabric

• Stem

• Fiber

Dyes should dissolve completely in

• Salty solution

• Sugary solution

• Acidic solution

• Aqueous solution

SiCl_{4 hydrolyses in water to form ___________.}

• Phosphoric acid

• Silicols

• Silicic acid

• Siloxane

Fuels need what to burn?

• Carbon dioxide
• Sulphur dioxide
• Oxygen
• water

Another term for burning is

• Fire triangle
• Magnesium oxide
• Combustion
• Bustion