Series OSS                                                                                                                     Code No. 168

                                                                             DYEING AND PRINTING
                                                                                       (Theory)

Time allowed : 2 hours                                                                                      Maximum Marks : 30

Instructions :   Attempt all questions after reading them carefully.

 

 

 

1. (a) Explain the steps of dyeing any protein fibre with reactive dyes.    3
    (b) Give any one method of applying disperse dyes on polyester.    2

 

2. (a) Compare the Discharge and Direct styles of printing.    4
    (b) Name one method of colour application in fabrics that employs Resist style.    1

 

3. (a) What do you understand by the term ‘Transfer’ printing ? Which fabrics is it generally used for ?    2
    (b) Screen printing has become a popular method. Give reasons.    2

 

4. Give the role and an example for any three of the following :   3x2=6
(i)    Mordants
(ii)   Buffer
(iii)  Anti-foaming Agent
(iv)  Solvent

 

5. (a) Why is it important to select a printing paste carefully ?
    (b) Give two examples of thickening agents.

 

6. (a) Write a short note on any two of the following:
(i)   Drying after printing
(ii)  Baking
(iii) Steaming
   (b)  What is the function of ‘washing off’ after printing ?