Polymer

Q.

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

1. henna
2. 
   

   french marigold

3. indigo
4. 
   

   walnut rind

Q. What is a polymer?

1. A crystalline structure made of many small crystals.
2. A large molecule made out of many repeating subunits.
3. A macromolecule made from organic molecules.
4. None of these

Q. What is not true about polymers?

1. Polymers do not carry any charge
2. Polymers have high viscosity
3. Polymers scatter light
4. Polymers have low molecular weight

Q. An example of vat dye is:

1. indigo
2. alizarin
3. malachite green
4. martius yellow

Q.

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

1. henna
2. 
   

   french marigold

3. indigo
4. 
   

   walnut rind

Q. Which of the following is a basic dye?

1. Alizarin
2. Malachite green
3. Indigo
4. Orange-I

Q. The compound used to fix a dye to the fabric is called:

1. mordant
2. lake
3. oxidizing agent
4. bleaching agent