Secondary colours

Correct answer: A. Clear colour hierarchy

Explanation: The governing concept is colour hierarchy, which is created by varying visual emphasis. When orange occupies the dominant area, it becomes the main focus; smaller amounts of green and violet act as supporting accents and prevent the composition from becoming flat. The presence of three distinct colours does not make the scheme monochromatic, and no colour relationship disappears. Thus option A is correct.

Correct answer: A. In a light-based system, such as RGB

Explanation: The governing concept is that colour categories depend on the medium. In additive light mixing, red, green and blue are the three primary lights, so green is primary in an RGB screen or lighting system. In traditional pigment mixing, green is normally made by combining yellow and blue, so it is secondary there. Therefore option A is correct; options B and C describe pigment-based practice, while D is an unjustified absolute statement.

Correct answer: A. A secondary colour made from red and green light

Explanation: The governing concept is additive colour mixing in the RGB model used by digital screens. Red light and green light combine to produce yellow light, so yellow is a secondary colour in this system. Blue plus green produces cyan, and black or white does not describe the red-green combination that forms yellow. Therefore option A is correct. The same colour name can have a different classification in a pigment system.

Correct answer: B. Green and blue

Explanation: The governing concept is additive RGB colour mixing. The three primary lights are red, green and blue. When green light is combined with blue light, the result is cyan, so option B is correct. Red plus green produces yellow, and red plus blue produces magenta. Yellow is not a primary light in the RGB system, so option D is also incorrect. This relationship is commonly remembered as G + B = cyan.

Correct answer: A. Red and blue light

Explanation: The governing concept is additive mixing of light in the RGB system. Red light combined with blue light produces magenta, making option A correct. Green and blue light produce cyan, while red and green light produce yellow. Option D mixes pigments rather than lights, so it does not answer a question about the light system and also uses yellow, which is not an RGB primary light. Thus A is the only suitable choice.

Correct answer: A. The colour system or medium being used

Explanation: The governing concept is that secondary colours are defined by the colour system and its medium. First determine whether the question concerns additive light, such as RGB, or subtractive pigment mixing, because the primary combinations and resulting secondary colours differ. Therefore option A is correct. The price of paint, the artist’s age and the paper size may matter in other contexts, but they do not determine whether a colour is primary or secondary.

Correct answer: A. They can create colour variety, contrast and visual balance

Explanation: The governing concept is the expressive and compositional use of colour. Secondary colours expand the available palette, help create contrast with complementary colours, and can support visual balance, emphasis and mood. Therefore option A is correct. They are not used only to make black; they can communicate many feelings. They may also be placed with primary colours, so options C and D incorrectly impose absolute restrictions on artistic practice.

Correct answer: A. Their formation, proportion, temperature, complementary relationships and medium are all important

Explanation: A complete understanding of secondary colours includes how they are formed, the proportions used in mixing, their warm or cool character, their complementary relationships and the medium involved. Therefore option A is the most comprehensive conclusion. Memorising names alone does not explain application, and colours are not identical in light and pigment systems. They also serve expressive and structural purposes, so decoration alone is too narrow.

Correct answer: B. A light orange tint

Explanation: The governing concept is value and tint in colour mixing. Equal amounts of red and yellow first produce orange. Adding a little white increases the colour’s lightness, creating a lighter orange tint while the basic hue remains orange. Therefore option B is correct. More red would make it reddish, and neither white nor the original mixture produces bluish green or dark violet. White lightens a colour; it does not darken it.

Correct answer: A. Contamination by red paint

Explanation: Green is a secondary colour produced by mixing yellow and blue. Red is complementary to green on the traditional colour wheel, so even a small amount of red accidentally transferred by a brush or palette can neutralise the mixture and make it look brownish or muddy. Clean yellow and blue support a brighter green, while white paper does not cause muddiness. Therefore, option A is correct.

Correct answer: B. Blue

Explanation: Orange is a secondary colour made by mixing red and yellow. On the traditional colour wheel, blue is opposite orange and is therefore its complementary colour. If blue accidentally enters the mixture, it partially neutralises the orange, reducing its brightness and making it appear dull, brownish, or muddy. Yellow and red are ingredients of orange, and white lightens it rather than causing this neutralisation. Thus, option B is correct.

Correct answer: A. Yellow

Explanation: Violet is a secondary colour formed by mixing red and blue. Yellow lies opposite violet on the traditional colour wheel, so it is violet’s complementary colour. Even a small amount of yellow contamination can neutralise the mixture and make it dull, greyish, or muddy instead of clear violet. Black would mainly darken it, white would lighten it, and green is not the relevant opposite colour in this relationship. Therefore, option A is correct.

Correct answer: B. Secondary colour scheme

Explanation: The governing concept is classification of secondary colours. Orange, green and violet are all formed by mixing two primary colours: red with yellow makes orange, yellow with blue makes green, and blue with red makes violet. Since the composition uses only these three secondary colours, option B is correct. A primary scheme uses primary hues, while a monochromatic scheme uses one hue and its variations.

Correct answer: A. They should be free from contamination by the third primary colour

Explanation: Clean secondary colours require reasonably pure primary paints. The two paints being mixed should not contain a noticeable amount of the third primary colour; otherwise unwanted colour contamination makes the result dull or muddy. Thus option A is correct. Black, excessive lightness and old dryness do not guarantee purity and may reduce the brightness or workability of the mixture.

Correct answer: A. To balance and strengthen the dominant colour

Explanation: In a colour scheme, supporting colours provide contrast, context and visual balance around the dominant colour. They help the main colour appear intentional and noticeable without taking over the entire composition. Therefore option A is correct. Supporting colours do not remove the dominant colour, make every colour identical or eliminate colour; their purpose is controlled reinforcement and balance.

Correct answer: A. Mix correct primary pairs and identify results at different ratios

Explanation: The governing concept is that secondary colours are produced by mixing two primary colours: red and yellow make orange, yellow and blue make green, and blue and red make violet or purple. Asking learners to mix the correct pairs and compare different proportions directly tests practical skill, colour recognition, and control. Writing names, counting brushes, or drawing only an outline does not demonstrate colour mixing.

Correct answer: A. Balanced proportions, clear colour relationships and controlled intensity

Explanation: A successful secondary-colour painting applies the governing principles of colour relationships, proportion, harmony, and controlled intensity. The artist should decide which colour or area is dominant, support it with related colours, and avoid making every part equally strong. Using one colour everywhere removes contrast, random mixing weakens harmony, and thick outlines alone do not prove effective colour organisation.

Correct answer: A. It is formed by mixing two primary colours

Explanation: In the traditional pigment colour wheel, the governing rule is that a secondary colour results from combining two primary pigments. Red and yellow produce orange, yellow and blue produce green, and blue and red produce violet, subject to the pigment system used. Therefore option A is correct. White alone changes value, darkness is not a defining feature, and option D contradicts the process of colour mixing.

Correct answer: A. Their values may differ

Explanation: The governing concept in a grayscale study is value, meaning the relative lightness or darkness of a colour. Converting green and violet to grayscale removes their hue information, but their different values can remain visible. If one is lighter and the other darker, they will still appear different in tone. Option A is correct; grayscale does not make them primary, and it does not require a complementary relationship to disappear.

Correct answer: A. A little yellow

Explanation: The governing concept is colour adjustment within a secondary hue. Yellow-green is made by combining yellow and green; if the mixture appears too blue or too cool, adding a small amount of yellow shifts it toward the intended yellow-green balance. Option A is therefore correct. Red would introduce a different hue, black would reduce lightness, and violet would usually make the mixture still cooler or darker.

Correct answer: A. A colour formed by controlled mixing of two primary colours

Explanation: In the traditional subtractive pigment system, a secondary colour is produced by mixing two primary pigments in suitable proportions. For example, yellow mixed with blue can produce green, while red mixed with yellow can produce orange, depending on the pigment system. Option A is correct because it states the defining relationship. Black-and-white mixtures create tones or neutrals, three primaries usually mute a colour, and a lighter version is a tint.

Correct answer: B. Because both of its components are primary colours

Explanation: The governing concept is classification by colour components, not by equal quantity or temperature. Red and yellow are both primary pigments, so their mixture remains a secondary colour even when one is used in greater proportion. The unequal ratio may make the result more reddish or yellowish and alter its visual bias, but it does not change the category. Option B is correct; absence of white, an exact orange appearance, or warmth is not the defining rule.

Correct answer: B. The mixture may become overly neutral or brownish

Explanation: The governing concept is complementary colour neutralisation. Red is complementary to green, so a small amount of red reduces green’s intensity. However, adding too much red pushes the mixture beyond controlled muting and can make it dull, neutral, greyish, or brownish. Therefore option B is correct. Option A is opposite, while options C and D describe shifts that are not the usual result of excessive red.

Correct answer: B. Yellow and blue

Explanation: The governing concept is secondary-colour formation through primary-colour mixing. Green is made by combining yellow and blue. Yellow-green contains a larger yellow proportion, while blue-green contains a larger blue proportion, but the basic pair remains yellow plus blue. Therefore option B is correct. Red and yellow form orange, red and blue form violet, and green plus violet is not the basic mixture used to make these two green variations.

Correct answer: A. The value or hue may change slightly after drying

Explanation: The governing concept is evaluating colour under its final, dry appearance. Depending on the medium, a wet paint sample can appear darker, glossier, or otherwise different from the same colour after drying. Comparing both states helps the artist judge value and sometimes the apparent hue accurately. Therefore option A is correct. Drying does not turn a secondary colour into a primary colour, change its complement, or always make it white.