← GRE topics
GRE / verbal / General Test
Science and technology
10 original practice questions. Open them in any order.
Independent preparation material, not an official test or score prediction.
Question 1 of 10 · easier
Text Completion (1 blank)
Select one entry for the blank. Fill the blank in the way that best completes the text.
Although the new battery chemistry performed impressively in small laboratory cells, the engineers warned that its advantages might prove ______ once cells were manufactured by the thousand, when minor impurities that are harmless in a single cell tend to accumulate.
Your responses remain here while you practise. They are not saved after leaving or reloading this page.