IELTS Diagram Label Completion Practice Questions

Quick answer

Label the parts of a diagram using words from the passage, within the word limit. The diagram shows something the text describes — a machine, structure, organism or invention — and each label points to a part explained somewhere in the description.

Diagram Label Completion pairs a technical drawing with the passage section that describes it. The diagram might show a piece of equipment, a natural structure, a building or a historical invention, with arrows pointing at unnamed parts. You supply the missing names or descriptions from the text. The type looks intimidating — especially with unfamiliar technical subjects — but you never need outside knowledge: everything is in the passage.

Updated August 2026

What do Diagram Label Completion questions test?

This type tests whether you can connect a written description to its visual counterpart. It rewards understanding language of location and structure ("above", "attached to", "at the base", "inside which", "connected by") and tracking how the passage moves around the object part by part.

How do you answer Diagram Label Completion questions?

  1. 1Study the diagram first: read its title, the labels already printed, and where each empty label’s arrow points — printed labels are your anchors in the text.
  2. 2Note the word limit before writing anything.
  3. 3Find the descriptive section of the passage; diagrams are almost always drawn from one concentrated block of text rather than the whole passage.
  4. 4For each blank, use the nearest printed label to locate the right sentences, then read carefully for the part in that position — the text will describe it relative to parts you can already see.
  5. 5Copy the answer exactly as spelled in the passage and check it names the part the arrow actually points to, not a neighbouring component.

What are the common traps to avoid?

  • Labelling a nearby part instead of the one indicated — arrows are precise, and the examiner places similar components close together.
  • Being intimidated by technical vocabulary; the answer is always stated in the text, and unfamiliar terms are usually defined or described around their first mention.
  • Misspelling a technical word when copying it — a copied answer must be letter-perfect.
  • Assuming the description follows the diagram top-to-bottom; the passage may describe the object from the inside out or in order of function.

How long should you spend on them?

Spend the first minute orienting: diagram, printed labels, then the descriptive paragraph. After that, each label should take about 45 seconds. These questions cluster in one part of the passage, so they are efficient once located — do not let an early hard label stall the whole set.

Practise Diagram Label Completion passages

Practise other reading question types