Acrylic colour

The governing concept is controlled mixing of hue, value, and saturation. Starting with green, a small amount of yellow warms it, while a very small amount of black lowers its brightness and helps create an earthy olive tone. Therefore, option C is correct. White would only lighten green, yellow with violet tends to become dull, and red with blue produces a purple or muted dark mixture rather than olive. Test black gradually.

The governing concept is darkening a dominant hue with a small quantity of another pigment. Maroon is a deep, red-based colour; adding a tiny amount of blue can cool and deepen red, while a tiny amount of black can darken it. Thus option D is the most suitable answer. White in blue makes light blue, yellow in green makes a yellow-green, and orange in yellow keeps the mixture in the yellow-orange family. Add dark pigment slowly.

The governing concept is value modelling and the hierarchy of light. Pure white has the highest available light value, so it is best reserved for a small spot or edge receiving the strongest direct reflection. Option A is correct. Covering the shadow or background with white destroys the value structure, and adding equal white to every colour removes contrast. Other highlighted areas should usually use lighter tints of the local colour.

The governing concept is tonal modelling, in which changes of value describe form and volume. A round object normally needs a highlight where the light is strongest, a midtone across the turning surface, and a shadow on the side away from the light. Therefore, option B is correct. An outline only identifies the boundary, a flat colour removes depth, and black and white alone are not required if suitable colour values are available.

The governing concept is the tonal transition between light and shadow. A midtone acts as a bridge between the highlight and the darker value, allowing the surface to turn gradually. Without that bridge, light and shadow meet abruptly, so the transition looks harsh and the object may lose a convincing sense of volume. Option C is correct; the absence of a midtone does not make an object transparent or invisible.

The governing concept is consistency of the light source in tonal painting. A cast or form shadow is generally placed on the side opposite the direction from which the light arrives. If the shadow is painted toward the light source, the value pattern contradicts the stated lighting and the object appears unrealistic. Therefore, option D is correct. Shadow direction does not control opacity, paper strength, or automatically make the object brighter.

The governing concept is atmospheric or aerial perspective. Distance is commonly suggested by reducing contrast, saturation, and small details, while using lighter, softer colours because the atmosphere visually weakens far-away forms. Thus option A is correct. The darkest values, strongest saturation, and heavy black outlines usually attract attention and make an object appear nearer rather than receding. Nearby objects may retain sharper edges and stronger contrast.

Sponge application is governed mainly by paint load and pressure. The amount of acrylic on the sponge affects opacity and the size of each mark, while pressure affects how strongly the paint transfers and how dense the texture becomes. Too much paint or force can create large, dark, clogged patches. The sponge’s colour, the title, and paper length do not control the resulting application.

Natural foliage is visually varied: leaves and clusters differ in size, direction, spacing, edge, and colour density. If every sponge mark has the same shape and strength, the repeated pattern becomes mechanical, so the foliage looks artificial rather than natural. Similar marks do not automatically make paint transparent or strengthen paper. Varying pressure, angle, spacing, and paint load creates a more convincing organic texture.

The governing concept is controlled paint application along a sealed masking boundary. Pressing the tape edges firmly closes small gaps, while paint of moderate consistency is less likely to flow underneath. Apply a thin, even coat away from the tape rather than pushing paint into its edge. Watery paint, a loose tape edge, or a thick buildup increases seepage and produces an untidy border, so option A is correct.

The governing concept is protecting a painted edge while the acrylic layer sets. The tape should generally be removed carefully after the paint has dried enough to hold a clean boundary, without pulling wet paint across the edge. It should not be removed immediately, and soaking or folding the artwork can damage the paper and finish. Peeling slowly at a low angle helps preserve the edge, so option B is correct.

The governing concept is paint buildup at a physical boundary. If thick paint is repeatedly applied beside the tape, surface tension and the edge hold the material in one place; it then dries as a raised ridge. Too little paint would not normally create that accumulation, and a straight tape line or a white surface does not cause thickness. Thin, even coats near the tape prevent this problem, making option C correct.

The governing concept is the covering power of dried acrylic paint. Once dry, acrylic forms a relatively water-resistant film, so a small error can usually be concealed with a thin, controlled layer of suitable opaque colour that matches the surrounding area. Soaking the paper does not remove it safely, oil is an unsuitable medium, and hard scraping may damage the surface. Therefore option D is correct.

The governing concept is visual uniformity of colour, value, and surface texture. When many small patches remain visible, each patch may dry with a slightly different tone or brush texture. Applying one controlled, uniform layer over the entire related shape unifies those differences and hides the correction boundaries. Different colours, water, or blackened edges would emphasize irregularity rather than correct it, so option A is best.

The governing concept is adhesion between the acrylic film and its support. Dust, grease, and loose dirt form a barrier, so the paint may spread unevenly, flake, or fail to bond firmly. Cleaning removes that barrier and helps the layer remain even and durable. It is not intended to change the surface colour, enlarge a brush, or use paint faster. Since reduced adhesion is the relevant effect, option B is correct.

The governing concept is surface preparation for reliable paint adhesion. A very smooth, non-absorbent support may allow paint to slide, especially when dust, grease, or an unsuitable ground is present. Cleaning the surface and applying an appropriate primer or base provides a better key for the acrylic layer. More water makes the paint thinner, oil can interfere with bonding, and sunlight is not a proper preparation method. Thus option C is correct.

The governing concept is the relationship between paint load, moisture, and paper strength. A heavy acrylic layer adds weight and water to a thin sheet; as it dries, uneven stress can make the paper buckle, warp, or damage its surface. Heavy application does not automatically make paint transparent or metallic, and acrylic normally dries rather than remaining wet forever. Therefore option D is correct; sturdy paper is preferable for thick layers.

The governing concept is protection of acrylic paint from air. Acrylic dries quickly, and dried paint on the rim can prevent the lid from forming an airtight seal. Air entering through the gap makes the remaining paint thicken or dry. Therefore, option C is correct: a clean rim allows the lid to close tightly. Option A concerns only the label, while B and D do not affect storage or drying.

The governing concept is safe drying and storage of acrylic artwork. After drying, acrylic forms a stable film; before that, a damp or tacky surface can adhere to another artwork, transfer colour, or become marked. Thus option A is correct: the painting must be completely dry before stacking or placing it beside another work. A tacky surface increases damage, oil is not required, and folding can crease the artwork.

The governing concept is testing a medium before committing it to the final surface. Acrylic can appear different while wet because drying changes its sheen, value, and sometimes the perceived intensity of a mixed colour. A dried swatch therefore predicts the result more reliably and helps the artist adjust the mixture. Option A is correct; the other choices concern cutting, brush damage, or naming rather than colour evaluation.

The governing concept is planned, layered acrylic technique. First, planning establishes composition; a sample test checks the dried colour. Broad areas and background layers are then applied, allowing suitable drying between layers, and small details are added last. Therefore option B gives the most controlled workflow. Applying everything at once reduces control, beginning with details is inefficient, and repeated rubbing can disturb the surface.

The governing concept of sgraffito is subtractive surface marking: a tool removes or scratches through a still-wet or workable paint layer so that the underlying colour or surface becomes visible. Hence option A is correct. Varnish only provides a finishing coat, excess water changes the paint consistency, and painting the reverse side does not create the characteristic scratched lines or texture.

The governing concept is the use of a template for consistent repetition. A stencil has a fixed cut-out, so applying paint through it reproduces the same outline or motif several times with much greater uniformity. Therefore option B is correct. A palette knife spreads or scrapes paint, a liner brush is useful for hand-drawn lines but may vary, and a stay-wet palette preserves paint rather than shapes.

The governing concept is texture transfer, in which a textured object carries paint and deposits an impression on another surface. A leaf with visible veins or a sponge with pores can be coated lightly with acrylic and pressed onto the paper, producing a print-like pattern. Thus option C is correct. A compass, eraser, or water container alone does not normally provide the required repeating texture or paint-transfer surface.

The governing concept is reproducibility in colour mixing. A mixed acrylic colour depends on the specific pigments, their proportions, dilution, and sometimes the surface and drying appearance. Even a small change in the amount of one pigment can shift the resulting hue, value, or saturation. Therefore option A is correct, and preparing enough paint at once is sensible. Paper does not automatically change size, brushes do not create colours, and acrylic does not always dry white.