Match Wits With Our Word Wizards

(Illustrated version of Word Wizards)

In each sentence, select the best choice for formal writing:

• While /Although the method is efficient for most applications, it can produce errors when small, irregularly shaped specimens are tested.
• Place the sample into the rig while / whereas the power is off.
• The Structures Division had responsibility for the fan blade design, while /whereas the Materials Division was to develop the composite material for the blade. (The two projects are not necessarily happening at the same time.)
• While /Although the experiment was thermal cycling, an inert atmosphere was maintained to avoid oxidation of the aluminum framework.
• The single-crystal material is somewhat stronger, while /whereas the composite is significantly lighter.
• Make sure that excessive pressure is not applied while / whereas the surfaces are in contact with each other.

For an explanation of while, whereas, and although, see Quirks of English.