Acrylic colour

The governing stain-removal concept is acting before a water-based paint dries. Wet acrylic colour should be rinsed or blotted promptly with water, following the fabric-care instructions, because drying can leave a tough plastic-like film. Sunlight sets the stain, oil is not the appropriate first treatment, and rubbing may spread it. Thus option D is the best answer.

The governing safety concept is using protective clothing appropriate to the exposed body area. An apron covers the front of the body and helps shield clothes from splashes, drips, and accidental brush marks. A paper or woollen cap protects the head rather than the clothing, while metal armour is unsuitable and impractical for painting. Therefore option A is the correct protective item.

The governing concept is safe handling of non-food art materials. Acrylic colour is formulated for painting and may contain pigments, binders, preservatives, or other substances that should not enter the mouth. Tasting it can create a health risk, even if the exact formulation varies by product. It does not lighten the colour, damage brush bristles, or thicken paper. Option B is correct.

The governing safety concept is personal hygiene after handling art materials. Washing the hands removes paint residue and helps prevent it from reaching food, drinks, the eyes, or the mouth. The brush must be cleaned separately, and handwashing cannot brighten paint or dry paper. Therefore option C correctly explains the reason for washing hands after acrylic work.

The governing concept is basic safety while handling art materials. If acrylic colour enters the eye, rinse it gently with plenty of clean water and immediately inform a parent, teacher, or another responsible adult. Rubbing may scratch or further irritate the eye, while continuing work or applying more paint is unsafe. Therefore, option D gives the appropriate first response.

The governing concept is proper care and storage of artwork. Acrylic paint should be allowed to dry completely before the painting is stored, covered, or placed against another surface. A dry surface is less likely to stick, smear, or suffer damage. Keeping it in water, folding it, or adding sand can harm the paper and paint. Thus, option A is the only suitable requirement.

The governing concept is protection of wet paint layers. Acrylic paint can remain tacky before it dries, so placing one wet painting on another may cause the painted surfaces to stick, transfer colour, or tear when separated. Stacking does not make colours brighter, strengthen paper, or speed drying reliably. Therefore, option B correctly describes the likely problem and shows why complete drying is important.

The governing concept is preventive care for a finished artwork. After an acrylic painting has dried completely, it should be kept in a clean, dry, protected place where dust and accidental contact are reduced. A damp location encourages damage, soil contaminates the surface, and washing can dissolve or disturb parts of the paint layer. Hence, option C is the appropriate method.

The governing concept is colour planning and visual harmony. Selecting the main colours before painting gives the artist a planned palette, helps different areas relate to one another, and reduces accidental or unnecessary mixing. It does not clean a brush, change the thickness of paper, or prevent acrylic paint from drying. Therefore, option D correctly states the practical benefit of advance colour selection.

The governing concept is testing colour mixtures before committing them to the final artwork. A small sample allows the artist to observe the mixture, opacity, and appearance after the acrylic dries, because the wet and dry impressions may differ. This helps correct the colour in advance and prevents mistakes on the main painting. Cutting paper, bending a brush, or renaming paint is unrelated, so option A is correct.

The governing concept is an organised painting workflow. Planning establishes the composition; a light sketch places the main forms; broad areas can then be painted before smaller details and final corrections. This sequence gives control and allows layers to dry when necessary. Starting with details, spreading every colour at once, or continuously rubbing wet paint can create confusion and damage the surface. Thus, option B is best.

The governing concept is controlled adjustment of paint consistency. A small amount of water is generally mixed with acrylic colour to make it thinner and easier to spread or use in a lighter layer. Too much water may weaken coverage, so it should be added gradually. Clay and sand are solids, while oil is not the normal thinner for water-based acrylic paint. Therefore, option B is correct.

The governing concept is matching an art tool to its function. A brush is designed to hold and spread liquid or semi-liquid paint, so it is the common tool for applying acrylic colour to paper, canvas, or another suitable surface. Scissors cut, a ruler measures or guides straight lines, and an eraser removes marks. Since those tools do not normally apply paint, option C is correct.

The governing concept is colour mixing, especially the formation of a tint. When white is mixed with a colour, the resulting mixture appears lighter; adding more white generally produces a still paler version. This is different from adding black, which normally makes a colour darker. White does not automatically make acrylic completely transparent or metallic. Therefore, option B correctly identifies the result.

The governing concept is shade and value in colour mixing. Adding a small quantity of black lowers the lightness of the original acrylic colour, so a darker shade is produced; therefore option C is correct. White would increase lightness and create a tint, while transparency is not the main effect of adding black. Black should be added gradually because too much can make the colour dull or muddy.

The governing care principle is that acrylic paint dries rapidly and forms a firm film. If the brush is not washed immediately, paint can harden between the bristles, making them stiff and reducing the brush’s ability to hold and spread colour. Thus option D is correct. The other choices do not describe a useful purpose of washing; cleaning protects the tool and preserves its shape.

The governing preparation principle is that paint adheres best to a clean, dry, reasonably stable surface. Dust and oil act as barriers, while excess moisture can dilute the paint or weaken its bond. Therefore option A is correct: cleaning removes loose particles and drying provides a suitable base for even application. The other surfaces may cause uneven coverage, peeling, or poor adhesion.

The governing drawing principle is to create a light construction line that guides painting without competing with the final colours. A pencil is suitable because it can make a faint, controlled outline before acrylic paint is applied; therefore option B is correct. Thick ink may remain visibly strong, while a wet cloth or oil cannot produce a precise preparatory line and may interfere with paint adhesion.

The governing storage principle is to limit air exposure after a water-based acrylic product has been opened. Closing the lid reduces evaporation and helps keep the paint workable for its next use, so option D is correct. The lid does not make the container heavier, change the colour, or dry a brush. A tightly closed container also helps prevent a skin or hardened layer from forming on the paint.

The governing media principle is that acrylic paint can form an adherent, durable layer on several prepared surfaces, including canvas. Therefore option A is correct. Water is not a solid painting surface, and the words “only” make the glass and wet-clay choices false. Acrylic may also be used on suitable paper, board, wood, or walls when the surface is properly prepared, but canvas is the clear correct option here.

The governing surface-selection principle is that paper must be strong enough to support a wet paint layer. Sufficiently thick, sturdy paper absorbs and withstands the moisture better, so it is less likely to buckle, warp, or tear; therefore option B is correct. Very thin paper may deform, while oily or torn paper cannot provide a clean, stable base for acrylic colour.

The governing concept is controlling paint consistency. If acrylic colour is too thick, a small amount of water can be mixed in gradually, making the paint easier to spread and apply smoothly. Water should be added carefully because too much can weaken coverage. Sand makes the surface gritty, black paint changes the colour, and leaving the paint open makes it drier and thicker. Therefore, option A is correct.

The governing concept is wet-on-wet layering. When a second acrylic layer is placed over a still-wet first layer, the brush can disturb the base and the two colours may blend unintentionally. This can produce a muddy or uneven result rather than a clean separation. The colour does not always become lighter, and the paper or brush cannot change as described. Therefore option B is correct.

The governing concept is dry layering. A second acrylic layer should normally be applied after the first layer has dried sufficiently. This keeps the edges and colours separate and prevents the brush from lifting or mixing the underlying paint. Applying it while the base is very wet may create muddy blending. A torn paper or dirty brush is not a suitable condition. Therefore option C is correct.

The governing concept is opaque overpainting. Once acrylic colour has dried, an artist can often correct a mistake by applying a suitable new layer over the unwanted mark, allowing the correction to dry before adding further details. This works because acrylic can form an opaque film. Soaking paper may damage it, oil is not the normal correcting medium, and tearing destroys the support. Option A is correct.