Good vs Bad Survey Questions

1. [good] After practicing this session, I can recall:  
   1. all 20 words 
   2. 20-15 words 
   3. 15 - 10 
   4. 10-5 
   5. below 5
   6. none
2. [bad] Do you think this game help you remember the vocabulary?

I suppose 1 is good as it measures how many words student can remember after using/not using the website. 2 is is bad because it's a question, and it only ask for subjective opinion