How many qeustions?

It's basically the same test as the instrument rating. If you haven't already taken the instrument written, pay the extra money and take the CFII the same day. That way the info is still fresh in your mind. If you've already taken the instrument written....just review.

Are the Instrument test and CFII test virtually the same? What's the difference in the test between the two?
IA exam has 60 questions, CFII has 50. Same question bank. You might have one or two helo questions thrown into the CFII exam, but I didn't. They were practically identical tests.