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WBCS · Science

WBCS Science PYQ — 244 Previous Year Questions

Attempt WBCS Science previous year questions online with answers, explanations, and weightage trends to focus your revision.

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WBCS Science PYQ 1 (2017)

A radioactive element is —

  1. Calcium
  2. Uranium
  3. Aluminum
  4. Sodium

Answer: B. Uranium

WBCS Science PYQ 2 (2017)

The fastest Sn1 reaction is of the followings:

  1. (A)
  2. (B)
  3. (C)
  4. (D)

Answer: A. (A)

WBCS Science PYQ 3 (2017)

The immersed portion of a piece of pure ice floating in water is

  1. sth of its volume.
  2. ZF thof its volume.
  3. ith of its volume.
  4. ath of its volume.

Answer: B. ZF thof its volume.

Free sample · Question 1 of 3

Science · 2017

A radioactive element is —

WBCS Science PYQ analysis

This page collects 244 WBCS Science previous year questions (2015–2026) in one place — attempt them online free, see answers and explanations instantly, and track how often Science is asked in WBCS.

WBCS Science PYQ count by year: 2026 — 24, 2023 — 35, 2022 — 30, 2021 — 21, 2020 — 22, 2019 — 18, 2018 — 23, 2017 — 25, 2016 — 26, 2015 — 20.

High-yield Science subtopics in WBCS: Biology & Health, Physics, Chemistry, Technology & Space, and IT, AI & Emerging Technologies. Prioritise these recurring micro-themes.

High-yield Science subtopics

Biology & HealthPhysicsChemistryTechnology & SpaceIT, AI & Emerging Technologies

Go deeper with WBCS Science

WBCS Science study notesAll WBCS PYQs (every topic)

Other WBCS PYQ topics

WBCS History PYQWBCS Current Affairs PYQWBCS English PYQWBCS Geography PYQWBCS Reasoning PYQWBCS General Knowledge PYQWBCS Polity PYQWBCS Quantitative Aptitude PYQWBCS Economics PYQ

Frequently asked questions

How many WBCS Science PYQs are here?

200+ WBCS Science previous year questions, free to attempt online. Try a few with no signup, then unlock the full set with a free account.

Are WBCS Science PYQs free with answers?

Yes — every WBCS Science PYQ shows the correct answer instantly, with an explanation where available, plus topic-level performance insights after you attempt.

Can I attempt WBCS Science PYQs online without signup?

You can attempt sample WBCS Science questions free with no signup. The full timed set is free after creating an account.