Acrylic colour

The governing concept is even coverage through suitable tool choice and paint consistency. A broad flat brush holds enough paint and covers a wider area efficiently, while evenly mixed acrylic flows in a controlled, uniform layer. Therefore option A is correct. A thin pointed brush is intended for detail, a dry brush with little paint leaves gaps and streaks, and an irregular wet surface makes the coverage uneven.

The governing concept is prompt brush care because acrylic becomes difficult to remove once it dries. The first action is to rinse the brush thoroughly in water, remove paint from the ferrule and bristles, and keep it suitably moist while working. Thus option B is correct. Sunlight speeds drying, sand contaminates and changes the paint, and leaving a brush in paint can damage its shape and allow residue to harden.

The governing principle is layered acrylic application: a new coat should be placed over a dry, stable surface. If the first coat is still wet, brushing over it can lift, smear, or unevenly mix the underlying colour. Once it has dried completely, the second coat can cover weak areas smoothly and improve the evenness of the surface. Therefore, option C is correct; the other choices do not provide a sound painting condition.

The governing concept is colour consistency across a continuous painted area. When one sufficiently large batch is mixed before work begins, its hue, value, and thickness are more likely to remain consistent from one edge of the background to the other. A second mixture made halfway may differ slightly, producing a visible patch or band. Thus option A is correct; preparing paint does not clean the brush, thicken paper, or stop drying.

The governing concept is control of brush pressure and paint load during a continuous stroke. A thin line remains narrow only when the brush angle, pressure, and amount of paint stay reasonably steady. Pressing harder makes more bristles spread, while an extra load of paint also deposits a broader mark. Therefore option B is correct. Light colour, paper thickness, or a clean palette does not by itself explain a wider middle section.

The governing concept is opacity and controlled layering. A dark acrylic base should first dry so the detail does not mix with or disturb it. An opaque light colour, applied with a clean small brush, gives stronger coverage and sharper edges, especially for small marks. Therefore option C is correct. A wet base, excessive water, or rubbing can blur the detail, weaken coverage, or damage the underlying layer.

The governing concept is controlled layer thickness and uniform drying. A heavy acrylic deposit can remain wet underneath even when its surface begins to dry, so adding another thick coat makes the problem worse. The best preventive solution is to build colour gradually with thin, even coats and allow each layer to dry. Option D is therefore correct. Excess water may weaken coverage or the paint film, while folding paper is unrelated and can damage the work.

The governing concept is consistent brush handling for an even painted film. Moving the brush in a planned direction with controlled, moderate pressure distributes the acrylic more uniformly and reduces ridges or visible marks. Option A is correct. Changing direction repeatedly creates crossing strokes, a very dry brush can drag and leave harsh marks, and extremely thick paint generally increases texture rather than hiding it. Smooth work also benefits from adequate paint and a steady pace.

The governing concept is adjustment of paint consistency and covering power. If an acrylic mixture contains too much liquid and has become overly thin, adding a small amount of the original or base paint increases the pigment concentration and restores a workable body. Therefore option B is correct. More water would make it thinner, changing the brush cannot alter the mixture, and adding paper is irrelevant. The base paint should be added gradually and mixed thoroughly.

The governing concept is precision through a stable surface, suitable tool, and controlled pressure. A dry background prevents lettering from bleeding into the underlying coat. A brush appropriate to the letter size holds a manageable amount of paint, while even pressure keeps strokes and edges consistent. Thus option D is correct. A wet background, excess water, an unsuitable broad brush, dirty tools, or irregular pressure can blur edges and make the lettering uneven.

The governing concept is controlled overpainting after the acrylic layer has stabilised. Allowing the mistaken area to dry prevents smearing; then a carefully matched colour can be applied in a thin, controlled coat to cover or reshape the local section. Option A is correct. Spreading wet paint with a finger can damage edges and texture, pouring water over the painting is uncontrolled, and hard scraping may harm the paper or underlying surface.

The governing concept is colour matching in acrylic painting. A correction coat becomes visible as a separate patch when its hue, value, opacity, or thickness differs from the surrounding layer. Therefore, option B is correct. Paper size, a clean brush, and palette shape do not create a colour mismatch. Keeping a little of the original mixture helps make later touch-ups blend smoothly.

The governing concept is modelling form through value. A solid object appears three-dimensional when its planes respond consistently to a chosen light source: the light side is lighter, the turning plane has a middle value, and the shadow side is darker. Option C is correct. One value looks flat, an outline alone does not model form, and unrelated colours break the lighting logic.

The governing concept is aerial perspective. Moisture and atmosphere make distant forms appear lighter, less saturated, softer, and less detailed than nearby forms. Therefore, option D is correct. Very dark mountains with sharp edges or heavy black outlines make them seem closer, while equal values and details remove the sense of depth. Foreground forms may use stronger contrast and sharper marks.

The governing concept is visual depth through contrast and detail. Foreground objects are conventionally shown with stronger dark-light contrast, clearer textures, more visible details, and selected hard edges, so they appear nearer and more prominent. Option A is correct. Light blurred treatment belongs more naturally to distant areas, while equal colours or white alone cannot establish spatial emphasis.

The governing concept is that a tool’s surface determines the marks it transfers. A sponge has pores and an uneven face, so it deposits acrylic in irregular patches and produces a mottled, grainy texture; therefore option D is correct. A fine brush is better for a thin straight line, controlled lettering, or a uniformly smooth coat, making options A, B, and C less suitable.

The governing concept is that a wet acrylic application may not show its final appearance accurately. After drying, the painter can judge the actual hue, lightness or darkness, opacity, and surface finish, so option A is correct. Drying cannot enlarge a brush, rename the paper, or transform acrylic into oil; therefore options B, C, and D are unrelated distractors.

The governing concept is value adjustment: adding white raises a colour’s value and makes it lighter. Since the dried sample is too dark, option B is the controlled correction—mix a small amount of white into the base colour and test it again after drying. More black would darken it further, a complementary colour changes the colour relationship, and excessive water may weaken coverage rather than reliably correct value.

The governing concept is controlled repetition. Guide measurements establish the same dimensions, while a similar amount of paint on the brush and steady pressure help each mark have comparable coverage and edges. Thus option C is correct. Using a different brush, drawing without a plan, or changing water quantity introduces variation, so options A, B, and D do not reliably produce equal decorative shapes.

The governing technique for a round dot is to press the loaded brush onto the surface and lift it vertically. If the brush is dragged before lifting, the wet paint is pulled in one direction, stretching the circular mark into an oval; therefore option D is correct. Excess water can cause spreading, but it does not explain a consistently pulled shape as directly as dragging does.

The governing concept is alignment through preliminary guides. A light baseline and one or more height guidelines give every letter a common starting level and upper limit, so option A is correct. Different brushes do not guarantee equal height, a wet background affects drying rather than measurement, and excess water can make strokes run; none of those controls letter height as reliably.

The governing design concept is contrast, which separates a message from its surroundings and improves visual readability. Increasing the value contrast, such as light letters on a dark ground, or choosing a clearly different hue makes the acrylic title stand out; therefore option B is correct. Smaller letters, identical colours, or a wet background reduce clarity or fail to address separation.

The governing concept is that brush mechanics control the width and consistency of a painted stroke. Changing pressure, holding the brush at different angles, or moving at uneven speeds changes how much paint and brush surface contact the paper, so option C is correct. A colour name, paper whiteness, or palette size does not directly determine lettering thickness when the stroke technique remains controlled.

The governing concept is that paint layers must dry evenly. An acrylic layer applied too thickly or with uneven buildup can lose moisture at different rates and develop stress as it dries, producing a cracked or split-looking surface; therefore option D is correct. Light colour, clean paper, or a small brush does not by itself cause cracking, although poor application can contribute to the defect.

The governing concept is unity with variety. A limited palette remains harmonious, while tints made with white, shades made with black or darker mixtures, and muted versions made by reducing intensity provide differences in value and saturation. Thus option A is correct. Unrelated colours weaken unity, only black removes variety, and equal values make areas harder to distinguish.