Can You Find The Odd One Out In 30 Seconds?

There is an odd one out hidden in the puzzles, can you spot it in all 7 levels in under 30 seconds? If so you have amazing perception!

Test 1:

Test 2:

Test 3:

Test 4:

Test 5:

Test 6:

Test 7:

How did you do? SHARE to challenge your friends!