Multiple choice

A nanoscale is usually smaller than one-tenth of a ___________ in at least one dimension.

  1. picometre

  2. micrometre

  3. metre

  4. millimetre
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nanoscale is usually smaller than one tenth of a micrometre in at least one dimension, though this term is sometimes used for even smaller materials.

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