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Zen Active Recall

Custom CBSE Chemistry paper generator and timed exam cockpit.

Choose chapters, difficulty, and paper size. Download a masked printable paper or start a focused attempt with answers hidden until submit. No sidebar, no chat panel, no solution reveal during the attempt.

Mode

180 min

Full focus timer

Chapters

5/5

Configurable scope

Questions

17

exam mix

Board-blueprint validation matrix

Preview scope before you download or start.

This screen shows marks, section shape, reviewed-bank density, and answer masking before any paper is generated. Gaps stay visible instead of being converted into readiness claims.

Reviewed subset - gaps visible
Solutions: 7m / 3 reviewedElectrochemistry: 9m / 3 reviewedChemical Kinetics: 7m / 3 reviewedd/f Block Elements: 7m / 3 reviewedCoordination Compounds: 6m / 3 reviewed

Selected marks

36m

Chapter-weight target

Reviewed pool

15/33

Local approved-bank snapshot

Answer key

Masked

Before attempt/download review

Section preview

Section A8Q / 8m
Section B5Q / 11m
Section C2Q / 10m
General instructions preview
  • Questions are numbered continuously in the printable paper.
  • Formulae, substitutions, units, and reasoning steps should be shown.
  • Answer keys remain outside the student paper until review mode.
Review-gated limitation: 18 more reviewed questions are needed for full official-format density. Solutions: missing long coverage; Electrochemistry: missing long coverage; Coordination Compounds: missing long coverage

Custom paper builder

Customise chapters, difficulty, and paper size

Student paper downloads stay answer-masked. The review key remains post-submit so retrieval is not short-circuited.

Approved-bank fallback

Chapters

This prints a CBSE-style practice layout from reviewed PrepAI originals. It is a PrepAI practice paper, not a board-issued document.