Colour filling and blending

The governing concept is gentle pressure for a soft transition. Light pressure lets the brush move colour gradually across the meeting area without scraping the surface or leaving harsh bands, so the tones merge smoothly. The correct answer is A. Pressure does not cut paper, dry paint or intentionally break the brush; those choices contradict the purpose of controlled blending.

The governing concept is the relationship between moisture and edge quality. Wet colours can flow into one another before drying, so their boundary becomes gradual rather than sharply separated, producing a soft edge. Therefore B is correct. A hard edge usually results from a deliberate dry boundary, while serrated and metallic edges are not normal results of wet-colour blending.

The governing concept is that blending requires some movement or mixing of colour. When two paint layers are completely dry, their particles are fixed on the surface, so they do not flow into one another naturally. Therefore, option C is correct. A suitable medium, a damp brush, or a fresh overlapping layer may be needed. Dry paint does not cut paper, turn black automatically, or make brush use impossible.

The governing technique is boundary control. Starting at the edges allows the artist to follow the outline carefully and establish a clean shape before filling its larger interior area. Thus, option D is correct. Beginning at the centre does not guarantee a neat outline, while dry paint, torn paper, or absence of a brush is not the reason for using this method. Controlled strokes near the boundary reduce accidental overflow.

The governing concept is controlled stroke direction near an outline. A fast stroke travelling from the interior toward the outside can carry wet paint beyond the boundary, especially when the brush has excess colour or pressure. Therefore, option A is correct. Fast movement does not automatically lighten paint, shrink the shape, or increase paper thickness. Careful short strokes near the outline improve accuracy.

The governing concept is gentle blending without introducing unwanted pigment. A clean, slightly damp brush can soften the boundary between two colours by moving or feathering their edges, so option B is correct. The brush is not primarily being used to remove every colour, cut paper, or dry itself. Excess water should be avoided because it can create runs or dilute the paint unevenly.

The governing concept is dilution of a water-based medium. Adding a measured amount of water spreads the pigment through a larger volume, reducing colour strength and usually making the applied layer look lighter and more transparent. Therefore, option C is correct. Sand, clay, and wood do not normally dilute water-based paint and may damage the texture or tools. Too much water can cause weak coverage or unwanted runs.

The governing concept is opacity produced by paint coverage. A thick colour layer contains or deposits more pigment, so it covers the paper or lower layer more completely and generally appears solid and opaque. Therefore, option D is correct. Light transparency is associated with a thin or diluted layer. Thick colour does not necessarily become dark only at the edges; unevenness depends on application technique, not thickness alone.

The governing concept is transparency, which depends largely on the thickness and concentration of the applied layer. A thin layer contains less covering pigment, allowing light and the paper or lower colour to remain visible through it. Thus, option A is correct. Holes in the paper, missing bristles, and the paint never drying are not necessary conditions for transparent coverage. Dilution can increase this effect.

The governing concept is consistency of paint load and stroke rhythm. Using a similar amount of colour on each stroke and working continuously helps adjacent strokes merge before they dry, producing a more even surface. Therefore, option B is correct. Taking fresh colour every time can create variation, repeatedly drying the brush interrupts coverage, and folding paper does not solve patchiness. Pressure and speed should also remain reasonably steady.

The governing concept is the visible overlap created by a dry edge. When a section dries and fresh colour is placed over or beside it, the new layer can build up pigment at the boundary, producing a darker band or an uneven patch. Therefore, option C is correct. The colour does not normally disappear, the brush does not change size, and a hole in the paper is not the usual result. Keeping a wet edge helps maintain uniformity.

The governing concept is care of painting tools. Washing or otherwise cleaning the brush after use removes wet pigment before it dries between the bristles. This keeps the bristles flexible, preserves the brush shape, and prevents unwanted colour from contaminating later work. Therefore, option D is correct. Cleaning does not shrink the painting, darken its colour, or polish the paper. The correct method depends on the paint medium used.

The governing concept is controlled colour blending. Deciding the order first helps the artist place neighbouring colours in a logical sequence, so they merge gradually rather than forming abrupt or muddy patches. It also makes the transition more even and neat. Therefore, option A is correct. The brush does not clean itself, paper size does not change, and planning cannot stop paint from drying.

The governing concept is colour mixing and the arrangement of related colours on the colour wheel. Yellow and red are primary colours; when they are gradually combined, the intermediate hue is orange. Thus option B is correct. Green normally results from yellow mixed with blue, violet from red mixed with blue, and blue is not produced by combining yellow and red.

The governing concept is the formation of secondary colours by mixing primary colours. Blue and yellow combine to produce green, so option C is correct. Orange is made from red and yellow, while violet is made from red and blue. Brown may appear in some mixtures involving several colours or dark pigments, but it is not the standard result of simply blending blue and yellow.

The governing concept is a gradual transition in a blended area. Where one colour changes progressively into another, the middle zone is called the transition area or transition zone. Therefore, option A is correct. An outer boundary marks an edge, a frame surrounds an artwork, and a line segment is a geometric line; none describes the central zone where colours merge.

The governing concept is controlled brush movement during blending. Repeatedly moving the brush can overwork the wet colours, mix them beyond the intended transition, and reduce their clarity. The result may look muddy, so option B is correct. Excess brushing does not normally make colour brighter, completely white, or metallic; those effects require different materials or techniques.

The governing concept is maintaining a suitable paint load while filling. If the brush holds too little paint, it may run dry before the stroke is complete, leaving gaps or causing the stroke to break in the middle. Therefore, option C is correct. Excessive flow is associated with too much liquid or paint, while paper size and the shape’s dimensions do not change because of a low paint load.

The governing concept is controlling the paint load for accurate filling. When a brush carries too much paint, the excess reduces precision, may form a heavy wet spot, and can drip beyond the intended outline. Thus option D is correct. Paint does not disappear, paper does not shrink, and the brush does not become lighter merely because it contains excess colour.

The governing concept is preparing and controlling paint before application. Mixing on the palette allows the artist to adjust the shade, compare it with the intended colour, and achieve a suitable consistency before touching the paper. This supports even filling, so option A is correct. Palette mixing cannot cut paper, shorten a brush, or dry the painting; those effects are unrelated to preparation.

The governing concept is testing materials before applying them to the final artwork. A small paper sample shows the actual shade, opacity, and consistency after the colour is placed on a similar surface. This helps prevent an unwanted result, so option B is correct. Testing is not meant to break a brush, calculate paper price, or erase a finished painting.

The governing concept is the use of light and dark values to suggest form. A lighter area can appear closer to the light source, while a darker area suggests shadow; a gradual blend between them can make a flat shape look three-dimensional. Therefore, option C is correct. Blending does not determine paper size or brush price, and it is used to create more than a merely flat appearance.

The governing concept is shading by gradation, in which value changes smoothly from dark to light. On a round ball, the lighter and darker areas suggest how light falls on a curved surface, so the ball appears three-dimensional and rounded. Therefore, option D is correct. A flat appearance would use little value change, while transparency or position outside the paper is unrelated to shading.

The governing concept is boundary control in neat colour filling. The edge of the drawn shape defines the area that must receive colour, so it should be handled carefully first or throughout the process. Keeping the brush controlled near this line prevents accidental overflow and preserves the form. Therefore, option A is correct. The table edge, paint container and back of the paper do not determine the accuracy of the coloured shape.

The governing concept is wet blending: adjacent colours need to remain workable so their boundaries can be softened. When paint dries, its layer becomes fixed and its edge tends to remain hard, so a neighbouring colour cannot be merged into it gradually. Therefore, option B is correct. A darker appearance may sometimes occur, but it is not the main cause; the brush does not permanently stiffen and the paper does not suddenly stop absorbing paint.