DCS RankWhat it is
A single accuracy number tells you nothing about where to study. Accuracy lab measures how often you get questions right in each subject and chapter, ranks them, and highlights the weakest area — so your next study session targets the place that's costing you the most marks.
Live demo · Accuracy lab Sample student
Physics · Mechanics79
Chemistry · Organic71
Biology · Genetics66
Chemistry · Physical48
Physics · Electrostatics63
Weakest area
Physical Chemistry is your biggest leak — about 48% accuracy.
Mechanics is solid, so you don't need more of it right now. Fixing Physical Chemistry would lift your overall score more than anything else. Start with the chapters where you got the most questions wrong.
How it works
1
Tag every question
Each attempt is mapped to its subject and chapter, right or wrong.
2
Compute accuracy
Correct-rate is calculated per chapter, with enough attempts to be reliable.
3
Rank the leaks
Areas are sorted so the weakest, highest-impact one rises to the top.
4
Point you there
The weakest area is flagged in plain language, so revision goes where it matters.
What you get
✓Accuracy broken down by subject and chapter, not one blurry average
✓One clearly flagged weakest area to fix first
✓Confidence that your strong chapters don't need more time
✓Revision aimed at marks, not at whatever feels scary
Find your weakest area
Take a free mock and your accuracy map starts forming after the first attempt. No card needed.
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