Watercolour

The governing concept is liftability, or how readily dried pigment can be reactivated and removed with clean moisture. Non-staining pigments remain more loosely on or near the paper surface, so a damp brush can lift some colour; A is correct. Highly staining pigment bonds deeply, permanent ink is designed to resist removal, and oil colour is not removed by ordinary watercolour lifting.

The governing concept is protection of paper fibres during colour lifting. Rubbing a damp or weakened area repeatedly can break the fibres and produce rough patches. Therefore, stop the correction, let the area dry, and reassess it before making a very gentle further attempt. Applying more pressure or using a stiff brush increases abrasion, while folding the paper can create permanent damage. Thus option C is the safest and most appropriate action.

The governing concept is the absorbent action of salt in a damp watercolour wash. Salt crystals attract nearby moisture through their surface, and dissolved pigment moves with that moisture, leaving lighter, irregular star-like marks when the wash dries. Salt does not create pigment, colour the paper by itself, or stiffen the brush. Because the effect depends on dampness and pigment movement, option D gives the correct cause.

The governing concept is that the salt effect requires active moisture in the wash. On a damp surface, salt can draw nearby water and cause pigment to move, creating pale textured marks. Once the wash is completely dry, that movable water is no longer available, so the crystals normally cannot rearrange the pigment. Salt does not become paint, paper smoothness is not the main cause, and a brush is not required. Hence option A is correct.

The governing concept is that masking fluid should be removed only after the surrounding watercolour layer has dried completely. If it is rubbed away while the paint is wet, the colour may smear into the reserved area and the paper may be disturbed. Removing it before painting defeats its purpose, and wetting the paper is not a safe condition. Once the surrounding layer is dry, gentle rubbing reveals the protected paper, so option C is correct.

The governing concept is timely removal of masking material to preserve the paper surface. As masking fluid remains attached for too long, it may bond more firmly or become difficult to lift cleanly. Rubbing it off can then pull up paper fibres or tear the surface. It does not make the paint more transparent, increase paper thickness, or make water flow faster. Therefore option D describes the realistic risk and is correct.

The governing concept is maintaining a continuous, even flow across a large wash. Preparing enough colour beforehand and loading a broad brush adequately allows each stroke to connect while the surface remains uniformly moist. Too little paint or a dry small brush creates gaps and streaks. Scrubbing a drying surface damages the paper, and changing direction repeatedly makes the wash uneven. Therefore option A is the most suitable combination.

The governing concept is preparation for a continuous, uniform wash. A large area must usually be covered before earlier sections begin to dry; if the artist stops to remix colour, the mixture ratio, value, or moisture may change and visible boundaries can form. Making sufficient colour in advance supports consistent tone and uninterrupted brush movement. It does not make the colour automatically opaque, stiffen paper, or dry the brush, so option B is correct.

The governing concept is controlled movement of liquid colour under gravity. A slight tilt lets the wet bead at the lower edge of a wash travel steadily in one direction, helping the artist maintain an even connection between strokes and reduce back-runs. It does not make paint dry instantly, change paper into a transparent material, or harden the brush. Excessive tilting, however, can cause uncontrolled runs. Thus option C is correct.

The governing concept is controlling moisture in wet-on-wet painting. Colour spreads according to how much water is available on the paper; removing excess surface moisture with a clean, damp-controlled brush or by waiting briefly gives the pigment less freedom to travel. Adding water increases spreading, scrubbing damages fibres, and thin paper is not the direct control. Therefore option D is correct because it addresses the cause of uncontrolled movement.

The governing concept is moisture control in watercolour. A fully wet, shiny sheet lets pigment travel widely, but when the shine disappears and the paper is only damp, surface water is less mobile. Therefore the wash spreads less and its boundary becomes more manageable. Option A is correct; the colour does not vanish, change into oil paint, or normally tear the paper merely because the surface is damp.

The governing concept is the difference between wet appearance and dry value. While wet, the water film reflects light and the saturated surface can make the colour look deeper or darker. As the water evaporates, that sheen disappears and the settled transparent pigment usually appears lighter. Option C is correct; the pigment does not normally evaporate, vanish into the paper, or get absorbed by the brush after application.

The governing concept is controlled glazing and gradual value building. Once the first wash is completely dry, a thin transparent layer can deepen selected areas without abruptly covering the paper or destroying earlier colour relationships. Repeating this carefully gives control over the final value, so option D is correct. A thick opaque coat may become flat or muddy, water immersion risks damage, and scrubbing damages the paper surface.

The governing concept is the transparency of watercolour and the preservation of paper white. Watercolour usually allows darkening through additional washes, but removing a strong dark transparent layer and restoring a clean light value is difficult. Therefore option A is correct. Paper can receive dark pigment, dark paint does not break a brush, and water mixes with colours regardless of their value.

The governing concept is atmospheric perspective: as objects become farther away, their value contrast and colour saturation usually decrease, while moisture in the air makes their edges appear less distinct. Therefore, lighter values, subdued colours and softer edges make distant forms recede. Sharp dark edges and black outlines increase visual prominence, while dry-brush texture usually attracts attention rather than suggesting depth.

Negative painting uses the figure–ground relationship in reverse: instead of painting the object directly, the artist paints the surrounding space, allowing the untouched or lighter area to appear as the object. Option D is correct because it describes painting around the form. Filling an object with black is direct painting, while turning the picture or merely erasing does not define the technique.

The relevant watercolour principle is edge control. If the background wash stops slightly short of the figure, a narrow strip of untouched white paper remains between the figure and the wash. That strip catches attention and appears as an unwanted bright halo, so option B is correct. Heavy paper, transparency and a soft brush may affect handling, but they do not by themselves create this specific white gap.

Watercolour depends on transparent layers and a clean paper surface. Repeated corrections disturb earlier layers, mix several pigments into a dull mixture, and abrade the paper so it can no longer accept colour evenly. Option C correctly includes both causes. Paper does not create pigment, water does not automatically turn paint black, and a brush does not become smaller through correction; these distractors do not explain muddiness.

Freshness in watercolour comes from transparent colour, clean mixtures and economical handling. Planning the mark, placing a few decisive strokes, and pausing to let areas settle prevents unnecessary reworking and muddy blends. Option D expresses this principle. Repeated scrubbing damages the surface, mixing everything on the paper reduces clarity, and washing after every stroke removes control rather than preserving freshness.

Watercolour often appears different while wet because the wet surface looks darker and more saturated than the dried paint. The reliable test is to paint a small swatch on comparable paper, let it dry fully, and observe its final value and transparency. Thus option A is correct. Waving a brush or shaking a tube does not test drying behaviour, and viewing the paper’s back gives no dependable colour comparison.

Dry-brush marks become excessively harsh when the brush carries too little paint or is pressed too firmly. Reducing pressure and loading the bristles with slightly more paint increases coverage and makes the broken marks softer and more controllable while preserving the technique’s texture. More pressure intensifies roughness, soaking the brush removes the dry-brush character, and scratching the surface does not correct the paint application.

The governing concept is proper brush care. When an acrylic brush stands in water, its bristles can lose their shape, and prolonged soaking may weaken the adhesive or loosen the ferrule that joins the bristles to the handle. Therefore, option A is correct. The other choices describe impossible benefits: water cannot sharpen, lengthen, or permanently brighten a brush. Rinse it promptly and dry it properly.

The governing concept is transparency in watercolour: a thin, diluted layer allows more of the paper surface and its light to remain visible. Mixing a suitable amount of water with paint lowers pigment concentration and makes the stroke appear lighter and more transparent, while excess water can make it weak or uneven. Thick medium, dry powder and oil on paper do not provide the intended transparent brush stroke.

Wet-on-dry means applying wet paint onto a dry surface. Because the surface is not already carrying water, the pigment spreads less freely and the boundary remains relatively sharp, clear and controllable. Thus option C is correct. A highly spread or blurred edge is more associated with wet-on-wet work, while a completely invisible edge is not the normal result.

The governing concept is consistent brush loading. Over a large area, the painter should reload the brush at suitable intervals with a similar paint-to-water ratio and continue with overlapping strokes. Option A is correct because it maintains a more even tone and coverage. Never reloading causes the colour to fade, changing colours breaks unity, and keeping the brush in water makes the mixture too diluted.