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How to make paint from ochre, charcoal, and plant extracts
Contributed by: Kay
  • 1. What is ochre primarily composed of?
A) Silicon dioxide
B) Iron oxide
C) Calcium carbonate
D) Aluminum sulfate
  • 2. What determines the color of ochre?
A) Type and amount of iron oxide
B) Moisture content
C) Added plant extracts
D) Particle size
  • 3. What is the purpose of grinding ochre?
A) To remove impurities
B) To change the color
C) To create a finer pigment
D) To make it easier to mix
  • 4. What is charcoal made from?
A) Ground minerals
B) Volcanic ash
C) Burnt organic material
D) Decomposed plants
  • 5. Why is charcoal used as a pigment?
A) Creates a black color
B) Creates a yellow color
C) Creates a red color
D) Creates a blue color
  • 6. What form should charcoal be in for making paint?
A) Sticks
B) Chunks
C) Powdered
D) Liquified
  • 7. What is a common method for preparing charcoal for paint?
A) Grinding with a mortar and pestle
B) Baking in an oven
C) Exposing to sunlight
D) Boiling in water
  • 8. What is the purpose of a binder in paint?
A) To add color
B) To hold the pigment particles together
C) To prevent fading
D) To make the paint dry faster
  • 9. Which of these is a natural binder option?
A) Egg yolk
B) Mineral spirits
C) Acetone
D) Acrylic polymer
  • 10. What is gum arabic?
A) A type of clay
B) A type of charcoal
C) A natural gum used as a binder
D) A synthetic resin
  • 11. What is the role of water in traditional ochre paint?
A) To add color
B) To preserve the paint
C) To thin the paint
D) To act as a binder
  • 12. What is a mordant?
A) A type of brush
B) A grinding tool
C) A type of clay
D) A substance used to fix dyes
  • 13. Where do plant-based pigments come from?
A) Flowers, roots, and leaves
B) Animal bones and shells
C) Rocks, soil, and sand
D) Metals and minerals
  • 14. Which plant part is commonly used for red pigment?
A) Flowers
B) Roots
C) Stems
D) Leaves
  • 15. What is a common method for extracting pigment from plants?
A) Boiling
B) Burning
C) Fermenting
D) Freezing
  • 16. What should you do before using a plant extract as pigment?
A) Add more water
B) Grind it into larger particles
C) Heat it to a high temperature
D) Test for lightfastness
  • 17. What does lightfastness refer to?
A) Resistance to water damage
B) How quickly the paint dries
C) Ability to mix with other colors
D) Resistance to fading in light
  • 18. Which natural ingredient can be used as a preservative?
A) Sand
B) Salt
C) Sugar
D) Honey
  • 19. What consistency should the final paint ideally have?
A) Chunky and thick
B) Very watery
C) Smooth and spreadable
D) Dry and powdery
  • 20. What is a potential safety concern when working with natural pigments?
A) They can explode
B) They never stain
C) They are always completely safe
D) Possible allergic reactions
  • 21. Which tool is best for mixing small batches of paint?
A) Shovel
B) Leaf blower
C) Cement mixer
D) Palette knife
  • 22. What is a benefit of using natural pigments?
A) They are cheaper than all synthetic pigments
B) They are always more vibrant than synthetic pigments
C) They are easier to work with than synthetic pigments
D) They are often environmentally friendly
  • 23. What impacts the stability of paint made with natural ingredients?
A) Choice of binder and storage conditions
B) Whether it was made on a Tuesday
C) Only the type of pigment used
D) The air pressure during mixing
  • 24. What is a common support for painting with natural pigments?
A) Canvas or paper
B) Glass
C) Metal
D) Plastic
  • 25. Why should you store homemade paint in an airtight container?
A) To add more oxygen
B) To evaporate the water
C) To prevent drying out
D) To make the color brighter
  • 26. What is a benefit of aging ochre clay before processing it?
A) It doesn't have any effect
B) Reduces the color
C) Makes it easier to grind
D) Deepens the color
  • 27. What is the best water to use to thin out the paints?
A) Distilled water
B) Salt water
C) Tap water
D) Vinegar
  • 28. What safety precaution should you take when grinding charcoal into powder?
A) Wear a lab coat
B) Wear a dust mask
C) Wear gloves
D) Wear a face shield
  • 29. What is the result of adding too much binder?
A) Cracking
B) Runny paint
C) Becoming too light
D) Fading
  • 30. How do you dispose of leftover natural pigment paint?
A) Mix it with other paints
B) Pour it down the drain
C) Throw it in the trash
D) Check local regulations for pigment disposal
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