Which effect can be easily created in charcoal sketching?

Correct answer: Strong light and dark contrast

Charcoal can produce deep black, mid-grey and light tones. By varying pressure or blending the marks, an artist can easily show strong light-and-dark contrast. A transparent watercolour wash is a watercolour technique, not a typical charcoal effect. Exam tip: Remember charcoal for dark tones, shading and contrast.