Colour mixing

Correct answer: A. Identify primary and secondary colours

Explanation: The governing concept is the classification used in colour mixing. A tertiary colour is normally produced by combining a neighbouring primary colour with a neighbouring secondary colour, such as yellow with orange or blue with green. Therefore, a student must first identify primary and secondary colours and their positions on the wheel. Adding black, removing the wheel or using only white does not establish the required mixture. Option A is correct.

Correct answer: A. A tone will form and intensity will decrease

Explanation: In colour theory, a tone is made by mixing a hue with grey. Therefore, adding grey to blue-green produces a less intense or muted blue-green tone. The exact value may rise or fall depending on whether the grey is lighter or darker than the original colour, so option D is too absolute. Grey does not transform the hue into red-orange or turn it into a primary colour, making A the only complete answer.

Correct answer: A. Record the colour sample with pigments used and approximate ratio

Explanation: A useful colour record must make the experiment repeatable. Attaching a swatch and noting the pigment names, medium, and approximate mixing ratio allows the artist to compare results and recreate the colour later. Option A provides the essential evidence; a name, brush size, or paper price alone cannot explain how the mixture was produced.

Correct answer: A. Orange

Explanation: In the traditional subtractive colour model used in basic art education, red and yellow are primary colours, and mixing them produces orange, a secondary colour. Equal amounts generally give a balanced orange, although the exact shade can vary with the pigments used. Therefore option A is correct. Green results from yellow and blue, violet from red and blue, and brown is not the standard answer for this primary-colour pair.

Correct answer: B. Green

Explanation: In the traditional subtractive colour model taught in school art, blue and yellow are primary colours whose mixture produces green, a secondary colour. Thus option B is correct. The result may vary slightly with the particular pigments, but green is the standard expected answer. Violet is formed from red and blue, orange from red and yellow, and pink is generally a tint made by lightening red rather than the direct result of mixing blue and yellow.

Correct answer: A. Red and green

Explanation: The governing concept is complementary-colour mixing. Red and green lie opposite each other on the colour wheel, so their pigments partly neutralise one another and commonly produce a brown or muted earthy colour. Mix a small quantity of green into red gradually, because the exact result depends on pigment strength. Yellow and white make a light tint, blue and white make blue lighter, and red and white make pink. Therefore, option A is correct.

Correct answer: B. Muted brown or grey

Explanation: The governing concept is complementary-colour neutralisation. Blue and orange are opposite on the colour wheel, so mixing their pigments reduces saturation and commonly gives a muted brown, greyish brown, or other dull neutral. Add one colour gradually because unequal pigment strength can shift the exact result. Blue and orange do not produce bright pink, pure yellow, or bright green in ordinary paint mixing. Thus option B is the best answer.

Correct answer: C. Muted brown or grey

Explanation: The governing concept is complementary colour theory. Yellow and violet are opposite colours on the colour wheel, and their paint pigments tend to cancel each other’s intensity. Consequently, a mixture commonly becomes a muted brown, greyish neutral, or muddy earthy colour rather than a bright hue. The final appearance depends on the proportions and pigment properties, so the colours should be combined gradually. Bright blue, pure red, and bright orange are not the expected results. Option C is correct.

Correct answer: B. To mute it

Explanation: The governing concept is complementary contrast and pigment neutralisation. A complementary colour lies opposite the original colour on the colour wheel; when a small amount is mixed into a bright pigment, it absorbs or counterbalances part of the original colour’s chromatic intensity. The result is a more muted, less saturated colour. It does not make the paint transparent, primary, or white. Too much complementary pigment may create a muddy neutral, so option B is correct.

Correct answer: C. Green

Explanation: The governing concept is the complementary relationship on the colour wheel. Green is complementary to red, so a small amount of green counterbalances red’s chromatic intensity and makes it appear more muted. Add it gradually because too much green can shift the mixture toward a dull brown or grey. Orange and yellow are neighbouring warm colours and may intensify or warm the red, while pink is a lighter red rather than its complement. Therefore, option C is correct.

Correct answer: D. Orange

Explanation: The governing concept is complementary-colour neutralisation. Orange is opposite blue on the colour wheel, so adding a very small amount of orange reduces blue’s saturation and makes it look less bright or more muted. The amount must be controlled because too much orange can produce a muddy brown or grey mixture. White lightens blue but does not mute it in the same way; green and violet are neighbouring or related hues, not the standard complement. Thus option D is correct.

Correct answer: A. Violet

Explanation: The governing concept is the complementary relationship of colours. Violet is complementary to yellow on the colour wheel, so adding a small quantity of violet counterbalances yellow’s intensity and produces a more muted, slightly neutral colour. Mix carefully because excess violet can make the result muddy or brownish. White would create a lighter tint, while green and orange are adjacent or related colours that do not neutralise yellow as effectively. Therefore, option A is correct.

Correct answer: B. For thoroughly mixing thick colours

Explanation: The governing concept is the function of painting tools. A palette knife has a firm, broad blade that can fold and blend thick paint on a palette more evenly than a brush. It also keeps the brush relatively clean, preventing unwanted colour contamination. It is not primarily meant for drawing a thin line, cutting paper, or drying paint. The knife should be used gently so that the palette surface is not scratched. Therefore, option B is correct.

Correct answer: D. Keep a record of the proportions of colours used

Explanation: The governing concept is colour consistency: the final mixture depends strongly on the proportions of its component colours. Recording the quantities or ratio makes the process repeatable. For example, if red and yellow were mixed in a 1:2 ratio, using that same ratio again should produce a similar orange mixture. A different brush or faster mixing does not control the colour balance. Keeping a small swatch with the written ratio improves accuracy further.

Correct answer: C. A little blue

Explanation: The governing concept is component balance in a secondary colour. Green is produced from yellow and blue, so a green mixture that looks too yellow lacks sufficient blue in its proportion. Adding a small amount of blue moves the mixture toward a more balanced green. Red or orange introduces additional pigments that may dull or muddy the result, while white only lightens it without correcting the yellow-blue balance. Thus, option C is correct.

Correct answer: A. A little red

Explanation: The governing concept is balancing the component colours of a mixture. Violet is made from red and blue. If it appears too blue, the mixture needs a small addition of red to restore a closer red-blue proportion. Yellow or green adds other colour components and may make the result dull or muddy, while black only lowers the value and does not correct the hue balance. Therefore, option A is the appropriate controlled adjustment.

Correct answer: B. Saturation generally decreases

Explanation: The governing concept is the difference between tint, lightness, and saturation. Adding white to an opaque colour creates a tint: the colour becomes lighter, while its visual strength or purity is generally reduced, so saturation decreases. It does not turn into the complementary colour, because that relationship depends on another hue on the colour wheel. Nor does white make the mixture black. Therefore, option B correctly describes the usual effect.

Correct answer: D. Too many pigments blend together

Explanation: The governing concept is pigment interaction and loss of colour clarity. Repeated or excessive mixing brings more pigment particles into contact and combines several colour components, including unwanted traces left in the brush or palette. These pigments absorb and scatter light in different ways, so the mixture can lose brilliance and look dull or muddy. The paper does not become thick and the brush does not lengthen. Therefore, option D is correct; stop mixing once the desired colour is reached.

Correct answer: A. It helps understand mixing relationships

Explanation: The governing concept is learning colour relationships through controlled experimentation. A limited palette requires the student to create different hues, values, and neutrals by changing the proportions of a few available colours. This makes the effects of mixing easier to observe and improves prediction, economy, and colour control. It does not make every colour white, remove the need for brushes, or leave the paper colourless. Hence, option A is the only answer that describes the educational benefit.

Correct answer: B. Brown or dark neutral colour

Explanation: The governing concept is subtractive mixing of paint pigments. Red, yellow, and blue pigments absorb different parts of visible light; when all three are combined in suitable proportions, much of the light is absorbed, commonly producing brown, grey-brown, or another dark neutral colour. The exact result depends on pigment properties and ratios. The mixture does not normally produce pure white, bright pink, or pure green, so option B is correct.

Correct answer: C. Subtractive mixing

Explanation: The governing concept is subtractive colour mixing. Paint contains pigments that absorb some wavelengths of light; when pigments are physically combined, more light is removed from the reflected mixture, so the result is usually darker or less bright. Therefore, option C is correct. Additive mixing applies to coloured light, while digital-only and sound mixing are unrelated distractors.

Correct answer: D. Light mixes additively while pigments mix subtractively

Explanation: The governing concept is the difference between additive and subtractive colour systems. Coloured light adds wavelengths reaching the eye, so combining lights can increase brightness. Paint pigments absorb selected wavelengths, so combining paints subtracts more light from reflection. Thus option D is correct; the other choices make irrelevant or false claims about black, sound, or paper.

Correct answer: C. It makes recreating the colour easier later

Explanation: The governing concept is colour documentation and repeatability. A dried sample shows the final appearance after the paint has settled or dried, while the written record preserves the pigment names and approximate proportions. Together they provide a practical reference for recreating the colour later. Therefore option C is correct; the other choices do not follow from keeping a sample.

Correct answer: A. Gradually add white or more water

Explanation: The relevant concept is controlled tinting or dilution to create a gradation. In opaque media, a small increasing amount of white can lighten blue; in watercolour, adding water and using thinner pigment can produce a lighter value. The change should be gradual toward the horizon, so option A is correct. Black darkens, red shifts the hue, and uniform dark blue prevents the effect.

Correct answer: B. Vary the ratio of blue and yellow

Explanation: The governing concept is variation of pigment ratios in subtractive mixing. Blue and yellow produce green, but changing their proportions creates greens that range from yellow-green to blue-green. Small additions of another muted colour may further adjust naturalness, but the essential method is option B. Using one ready-made green lacks variety, while excessive black or equal red dulls every mixture.