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