I recently started my prep for GMAT. I went through the
MGMAT SC guide as I thought it was my weak area. After that I tried the questions in OG 13 and I was able to apply the theory that I learned in the
MGMAT guide and I got only for 4 wrong answers out of the 50 that I attempted.
But then when I took the GMAT club verbal tests I scored 24, 30 and 27

in my tests. In SC I was getting an accuracy of only about 50-60% in the
GMAT club tests whereas it was around 92% when I attempted OG question.
Can someone tell me what could be reason for this?
Are the gmat club questions more difficult than the questions in OG (in case of verbal )?
Are the questions in OG arranged in some manner like for example the easier ones are in the starting and then as we move towards the end questions the difficulty level increases?