30-minute block practice — attempt any block at any time
This file contains — questions split into
— independent 30-minute blocks of up to 20 questions each.
Attempt any block in any order. Answers and explanations appear only after you submit that block.
Each block timer runs for 30 minutes; time out = auto-submit.
Unanswered questions count as wrong.
You can pause mid-block and resume later.
Progress is saved in this browser.
Select a Block
—
Block 1 of 14
Q1–20
30:00
Time is up — block submitted automatically.
Block 1 Results
Progress
Block
Questions
Status
Score
Time Used
End this block?
All answered questions will be submitted. Unanswered questions count as wrong.