waecE-LEARNING
Clothing/Textile Paper 2, May/June. 2010  
Questions: 1 2 3 4 5 6 Main
General Comments
Weakness/Remedies
Strength

 

 

 

 

 

 

Question 1

1(a) Differentiate between natural fibres and synthetic fibres under the following headings:
                       (i)          source;
                       (ii)         luster;
                       (iii)        absorbency.
           (b)        Give two examples of each of the fibres in (a) above
           (c)         State three reasons for making blended fabrics.
           (d)        State two advantages of each of the following blends:
                       (i)          Wool and polyester;
                       (ii)         Cotton and nylon.


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Observation

They answered the questions on differences between natural and synthetic fibres very well and did not perform well on advantages of blends.

The required answers to the questions are as follows:

(a)       Differences between natural and synthetic fibres

 

 

NATURAL FIBRE

SYNTHETIC FIBRE

(i)

Source

Obtained from nature

Obtained from chemicals

(ii)

Lustre

Less lustrous

Very lustrous

(iii)

Absorbency

Very absorbent,

Less absorbent

 

 

Absorbs dye easily

Does not absorb dye easily

        (b)       Examples of the natural and synthetic fibres

Natural Fibres                       Synthetic Fibres                                
Silk                                          Nylon
Wool                                       Polyester     
Cotton                                     Acrylics.
Linen                                       Courtelle, orlon
Jute                                          Spandex
Sisal                                          Lycra
Coir                                          Terylene
Kapok                                       Glass fibre  
Pina                                           Metallic fibre
                                                   Dynel                      
                                                   Crepe, Dacron                      
                                                   Crimpline                     
                                                    Modacrylics                    
                                                                        

      (c)       Reasons for blending fabrics

                                                     (i)      To produce variety of fabrics
                                                    (ii)      To avoid mill waste
                                                   (iii)     To improve wearing qualities/durability to be comfortable to wear.
                                                   (iv)     To reduce production cost of fabric
                                                   (v)      Combines the advantages of both fibres while minimizing their disadvantages.
                                                   (vi)     To improve launder ability.
                                                   (vii)    To make fabrics attractive
                                                   (viii)   To strengthen weaker fabric
                                                    (ix)    To make fabric more absorbent
                                                     (x)     To improve texture

          (d)       Advantages of the following blends

                  (i) Wool and Polyester
         - Makes the fabric washable
         - Fabric can be permanently pleated.
         - Produces inexpensive blend
         - Fabric become more lustrous
         - Weight of fabric becomes lighter

                (ii)       Cotton and Nylon
        - Fabric is cool to wear
        - Fabric is crease resistant
        - Fabric is easy to launder.
        - Fabric does not shrink
        - Fabric dries quickly.
        - Fabric become more absorbent





           

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