Watercolour

The governing concept is separating colour intensity from value. Orange is complementary to blue, so a tiny amount can neutralise some of the blue’s excessive chroma while preserving its approximate value better than black or white would. Therefore option C is correct. Much black darkens the value, white makes the mixture lighter and may reduce transparency, and extra water mainly lightens and dilutes the wash rather than selectively correcting its intensity.

The governing concept is controlled correction of hue and value as separate properties. Since the green is too blue, a small amount of yellow first shifts the hue toward a balanced green. Since it is also too dark, water can then lighten the value while retaining watercolour transparency. Thus option B is correct. Adding black worsens darkness, mixing everything removes control, and red or white does not provide the most direct correction for the stated errors.

An objective comparison follows the controlled-variable principle. Keep the paper, sample size, pigment amount and working conditions as consistent as possible, then change only one factor, such as water quantity or brush method. Option C is correct because any observed difference can then be linked to that factor. Changing several materials together or keeping no records makes the result difficult to interpret or repeat.

Repeatability requires a record of the conditions that produced a result. In watercolour, the paint-to-water ratio strongly affects transparency, strength and flow, while drying can make a mixture appear lighter than it looked when wet. Option B is correct because a ratio and dried swatch allow the mixture to be recreated. A colour name alone is insufficient, and guesswork or extra brushes do not control concentration.

The governing concept is optical layering, often called glazing. When a transparent dry layer lies over another colour, light passes through the upper film, reflects from the paper and underlying layers, and returns with a blended visual effect. This can create luminous depth that palette mixing may reduce. Therefore A is correct; layering does not make paint dry instantly, thicken paper, or make every colour opaque.

Surface sizing is a treatment that partly seals or regulates the paper surface. Its governing function is to control how quickly water and pigment enter the fibres, giving the artist better edges, colour movement and time for lifting or correction. D is correct. Sizing does not make paper completely waterproof, guarantee permanent brightness, or turn the sheet transparent; it only modifies absorption.

The governing concept is the relationship between sizing and absorption. Heavy sizing makes the surface resist rapid penetration, so water and pigment can remain mobile on top instead of spreading evenly into the fibres. This may produce beading, streaks or uneven pools, making A correct. The paper does not instantly dissolve, colour does not necessarily vanish, and brush hardness is not the normal result of sizing.

Granulation is governed by particle movement and the paper’s physical texture. On a rough sheet, water collects in hollows while raised areas interrupt the flow; pigment particles therefore settle at different heights and concentrations. This separation makes the mottled, grainy effect more visible, so C is correct. The pigment does not burn the paper, water need not evaporate instantly, and paper does not create colour.

A staining pigment is defined by its strong attachment to or penetration into paper fibres. After drying, it leaves colour embedded in the sheet and is difficult to remove with a damp brush, so D is correct. Staining does not mean that the pigment works only on dry paper or is always opaque; transparency and staining are separate properties. It also does not thicken the water.

The governing concept is controlled lifting in watercolour correction. A clean damp brush can soften or remove pigment from a narrow selected path, exposing a lighter paper tone and producing a thin ray of light. B is therefore correct, especially when the pigment has some liftability. Rewetting the whole area loses control, black paint darkens rather than lightens it, and salt creates a texture effect rather than a precise beam.

Negative painting builds depth through successive surrounding layers. Begin with a light wash, allow it to dry, then paint around the shapes that should remain lighter or farther back; repeat with progressively darker layers for nearer forms. Option A gives this sequence. Covering the whole sheet with the darkest colour removes planned value separation, while white filling or a single outline cannot create layered depth.

These three planning tools address different but connected decisions. A colour swatch previews mixtures and drying changes; a value plan organizes light, middle and dark areas; and an edge plan decides where boundaries should be hard, soft or lost. Together they provide advance control over colour, tonal structure and focal emphasis, so option B is correct. Planning does not complete the painting or remove every material requirement.

A graded wash is governed by a gradual change in pigment concentration, creating a continuous value transition. Increase the water proportion little by little in successive strokes while maintaining a workable wet edge. Option A therefore repairs the abrupt change most effectively. Adding water suddenly can create blooms, changing colour is unnecessary, and turning the paper does not correct the tonal progression.

The governing watercolour concept is controlled lifting. A clean brush that is only slightly damp can act like an absorbent tool: touch the pooled edge gently and remove excess pigment without heavily disturbing the wash. Option A is correct. More paint increases the pool, rubbing damages the paper, and simply allowing it to dry may leave a hard unwanted mark.

The governing concept is controlled abrasion. A stiff brush can disturb or lift dried watercolour, but vigorous or repeated scrubbing can roughen, weaken, or tear paper fibres and leave an unwanted patch. Therefore option B is the essential precaution: use limited pressure and a few controlled passes. Excess water is not the key safeguard, and colour choice or immersing the ferrule does not protect the paper.

The governing concept is continuity of a flat wash. When the next stroke joins the previous one while its edge is still wet, the two areas merge evenly and preserve a uniform colour field. If the edge dries first, a visible tide mark or band may remain. Therefore option B is correct; drying does not heat paint, stiffen the brush, or thicken the paper.

The governing concept is controlled dilution in a graded watercolour wash. Adding a small amount of clean water as the work moves downward lowers the pigment concentration step by step, producing a gradual transition from darker to lighter tone. Option C is correct. More paint would darken the wash, increasing pressure may create uneven marks, and completely dry paper would interrupt smooth blending rather than create the gradient.

The governing principle of glazing is the controlled layering of transparent colour. If the earlier layer is dry, the next dilute layer rests above it and preserves colour clarity. If it is still wet, the layers can mix accidentally or the brush can lift the lower pigment. Therefore, option A is correct; the other choices do not describe any purpose of drying between layers.

In glazing, the lower layer is reactivated when excess water or repeated brushing disturbs its pigment. The correct correction is to use fewer, deliberate strokes with light pressure and a smaller amount of water, as stated in option B. Rubbing harder or adding water increases disturbance, while thick paint changes the method instead of solving the lifting problem.

The governing concept is controlled damp-on-damp watercolour blending. A slightly damp surface lets pigment move and merge gradually, while balanced moisture prevents both a hard boundary and uncontrolled puddling. Excess water can make colours run into patches; a completely dry surface and stiff brush encourage harsh edges; thick poster colour is a different medium and is unsuitable for this watercolour transition. Thus, option C is correct.

The governing concept is controlled lifting in watercolour. A clean, slightly damp brush can re-wet and absorb a limited amount of dry pigment, gradually restoring a lighter value while preserving the paper. Option A is safest because it uses small, controlled passes. Hard scrubbing can roughen or break the paper surface, cutting is destructive, and darker paint moves the value in the opposite direction.

This is the watercolour backrun, bloom, or cauliflower effect. It occurs when a relatively wetter brush or drop of water enters a wash that is still wet but has a different moisture level. The incoming water pushes the pigment outward, leaving a lighter centre and an irregular flower-like edge. Option A correctly identifies the cause; the other choices describe neither the fluid movement nor the observed pattern.