Warm and cool colours

Correct answer: A. Mix red, yellow, and a little blue

Explanation: The governing concept is subtractive colour mixing with pigments. First, red and yellow can be mixed to form orange; adding a small amount of blue, its complementary partner, neutralises the orange toward brown. The blue should be added gradually because too much can make the mixture dark or dull. Option A is correct, while white alone lightens and blue-white produces a tint rather than brown.

Correct answer: B. Black

Explanation: The governing colour-theory concept is a shade. Adding a small amount of black generally lowers the lightness of an acrylic colour and creates a darker version, so option B is correct. White produces a tint rather than a darker version, yellow changes the hue, and water mainly thins the paint or changes its consistency. Black should be added gradually because too much can overpower the original colour and make subtle mixing difficult.

Correct answer: B. Night or calm water

Explanation: Colour relationships can communicate temperature and mood. Cool colours such as blue, blue-green, and some green mixtures commonly suggest distance, calmness, shade, or cool air, so they suit a night scene or calm water. Fire, a bright sunset, a hot desert, and a burning flame are more naturally associated with warm reds, oranges, and yellows. Therefore, B is the best choice, although any scene may use artistic variation.

Correct answer: A. Blue, Green and Violet

Explanation: Cool colours generally include blue, green, and violet. In colour theory, these hues are associated with water, sky, vegetation, calmness, and visual distance; they often appear restful or cool to the viewer. Red, orange, and yellow are normally classified as warm colours. Black, white, and grey are neutral colours rather than the usual cool-colour group. Thus, option A is correct.

Correct answer: A. Red, Orange and Yellow

Explanation: Warm colours are generally red, orange and yellow because they are visually associated with sunlight, fire, heat and energetic movement. Therefore, option A is correct. Blue, green and violet are commonly grouped as cool colours, while black, white and grey are neutral colours. Although colour impressions can vary by context, the standard basic-art classification places red, orange and yellow in the warm group.