Secondary colours

Correct answer: D. Green

Explanation: Under the traditional subtractive paint model, blue and yellow are primary colours and their mixture generally produces green. Thus, option D is correct. Orange is made from red and yellow, and purple or violet is made from red and blue. A muddy brown may appear with impure or uneven pigments, but it is not the standard expected result of this school-level colour-mixing question.

Correct answer: D. Green

Explanation: The governing concept is subtractive colour mixing used in common paint practice. Blue and yellow pigments generally produce green, and a direct transition between them may visibly pass through green shades. Thus option D is correct. Orange is associated with red and yellow, purple with red and blue, and red is not the usual result of mixing blue with yellow. Exact results can vary with pigments, but green is the standard school-level answer.

Correct answer: A. Secondary colours

Explanation: Mixing two primary colours produces a secondary colour. In the traditional colour wheel, red and yellow make orange, yellow and blue make green, and blue and red make violet. Primary colours are basic colours, so they are not formed by mixing two primary colours. Exam tip: Memorise the three primary-colour pairs and their secondary colours.