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1.
Which of these things is transparent?
2.
Which of these things is black?
3.
Which of these things is blue?
4.
Which of these things is beige?
5.
Which of these things is violet?
bottom colour of the rainbow
✓
6.
Which of these things is rust-coloured?
hydrated iron (III) oxide
✓
7.
Which of these things is grey?
a food processor which has a grey lid but isn't all grey
✓
a garlic crusher which is mostly grey
✓
a cheese grater which is entirely grey in colour
✓
8.
Which of these things is yellow?
light of wavelength 400nm
✓
light of wavelength 580nm
✓
9.
Which of these things is red?
the outside of the flag of japan
✓
10.
Which of these things is green?