Are these questions really on the FAA Glider Commercial written test?
Well, now that I've taken (and passed) the test, I feel somewhat qualified to answer my own question.  

The first question, The VOR CDI indication deflection question, was indeed on the test.  There was also a question on VOR receiver checks "from a designated checkpoint on the airport surface".

The second (IFR) question was NOT on the test.

Of course, the test has 100 questions and the question bank is reported to have > 600 questions, so there is no garuntee that it couldn't be on the someone else's test.  IOW, YMMV.