Waec Dyeing And Bleaching Answer 2023

Waec Dyeing and bleaching Answer 2023

WAEC DYEING AND BLEACHING ANSWER 2023

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(2a)
(PICK ANY FIVE)

(i)Both batik and bleaching involve manipulating the fabric to create desired patterns or designs.
(ii)Both techniques provide a level of control over the design outcome.
(iii)Both batik and bleaching require specific tools and materials
(iv)Both techniques involve selectively applying a substance to the fabric
(v)Both processes involve manipulating the color of the fabric.
(vi)Both batiking and bleaching can create visual contrast on the fabric.

(2b)
(PICK ANY FIVE)

(i)Ascorbic Acid
(ii)Sunlight
(iii)Baking Soda
(iv)Vinegar
(v)Hydrogen Peroxide
(vi)Lemon Juice
(vii)Oxygen-Based Bleach

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(3) (PICK ANY FIVE)

(3i)Fabric: Fabric refers to the material used in textile production. It can be made from various fibers, such as cotton, silk, wool, or synthetic materials like polyester.

(3ii)Binder: A binder is a substance used in fabric printing or dyeing to help the color or pigment adhere to the fabric fibers.

(3iii)Fixing: Fixing refers to the process of setting or stabilizing the color on the fabric to prevent it from fading or washing out.

(3iv)Fast: Fast refers to the colourfastness of a dye or pigment. A dye or pigment is considered fast if it has good resistance to fading when exposed to washing, light, or friction.

(3v) Wax : wax refers to a substance that is applied to fabric to create patterns or designs by resisting the dye or color applied to the fabric.

(3vi)Squeegee: A squeegee is a tool commonly used in fabric printing or dyeing processes. It consists of a flat blade or rubber edge attached to a handle

(3vii)Tjanting: Tjanting is a traditional tool used in batik, a wax-resist dyeing technique. It is a small brass or copper container with a spout or nozzle.

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(5a)
The technique used is called tie-dyeing.

(5b)
(PICK ANY TWO)

(i)Both techniques involve manipulating the fabric to create unique patterns and designs.
(ii)Both techniques utilize various dyes and chemicals to achieve the desired colors and effects
(iii)Both techniques require the use of twine or similar materials to tie or bind sections of the fabric
(iv)Both techniques involve immersing the fabric in water and using a heat source, such as boiling water or steam, to set the dyes.

(5c)
(i)Prepare the fabric: Start with a clean, white fabric that is suitable for dyeing, such as cotton or silk
(ii)Twist and bind the fabric: Gather sections of the fabric and twist them tightly.
(iii)Mix the dyes: Prepare the desired colors by following the dye manufacturer’s instructions.
(iv)Wet the fabric: Dampen the fabric by soaking it in water.
(v)Apply the dyes: Use a brush or squeeze bottles to apply the dyes onto the fabric, focusing on the exposed sections.
(vi)Let the dyes set: Allow the fabric to sit for a specified amount of time, usually several hours.
(vii)Rinse the fabric: Rinse the fabric under cool water to remove any excess dye.
(viii)Remove the bindings: Carefully remove the twine or bindings from the fabric.
(ix)Set the dyes: To ensure the colors are long-lasting, set the dyes by either steam-heat setting.

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(6a)
The method to be used for fabric surface decoration is screen printing

(6b)
(i)The decorated fabric can be used to create personalized t-shirts, hoodies, or other garments.

(ii)The fabric can be transformed into decorative pillowcases, curtains, or tablecloths, adding a unique touch to interior design.

(iii)The finished fabric can be utilized in various art projects, such as quilting, patchwork, or mixed media creations.

 

(6c)
(i)Prepare the frame: Attach the frame mesh tightly to the frame, ensuring it is evenly stretched.

(ii)Coat the frame with emulsion: Apply the blue emulsion evenly on one side of the frame mesh using a squeegee.

(iii)Create the design: Use tracing paper to draw or trace the desired design.

(iv)Transfer the design onto the frame: Place the traced design on the glass and position the frame with the emulsion-coated side down over the design

(v)Rinse the frame: After exposure, wash the frame to remove the unhardened emulsion.

(vi)Set up the padded table: Place a padded table underneath the frame to provide a soft surface for printing.

(vii)Print the fabric: Lay the fabric on the padded table and position the frame on top, aligning the stencil with the desired area on the fabric

2022 Waec Dyeing and Bleaching Answer

(5a)
Bleaching is a process of whitening fabric by removal of natural colour, such as the tan of linen, is usually carried out by means of chemicals selected according to the chemical composition of the fibre.

(5b)
(i) sulfur dioxide
(ii) sulfurous acid
(iii) bisulfites, sulfites
(iv) hydrosulfite (dithionites)

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Another TOURISM Answer
(1)
[Pick any TWO}
(i) Travel services
(ii) Tourist boards
(iii) Accommodation services
(iv) conferences and events
(v) Attractions
(vi) Tourism services
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(2)
(i) Tourism products are intangible
(ii) Tourism products are perishable
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(3)
(i) Provision of electricity
(ii) Provision of water
(iii) Construction of Roads by government
(iv) Tourism also brings about improvement in communication
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(4)
Sukur – Adamawa
Eyo – Lagos
Argungu – Kebbi
Tinapa resort – Calabar
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Also Read:Â2023 WAEC Tourism Questions and Answers Expo