PYQPulse
HomeMocksPracticePYQsUpdatesDashboard
PYQPulse

Timing-accurate mock tests and PYQs for SSC, Banking and Railway exams — so the real paper feels like a revision.

Exams

  • SSC exams
  • Banking exams
  • Railway exams
  • All exams

Practice

  • Practice questions
  • Mock test series
  • Sectional tests
  • Year-wise PYQs
  • Performance analytics

Company

  • About us
  • Help Centre
  • Pricing
  • Sign in

Legal

  • Privacy Policy
  • Terms of Service

Contact

  • hello@testwala.co.in
  • Telegram
  • +91 62816 87760

Practice interface modeled on the official exam pattern — not the official examination. PYQPulse is not affiliated with the Staff Selection Commission, IBPS, SBI, RBI, NABARD, SEBI or Indian Railways.

© 2026 PYQPulse. All rights reserved.

Built for aspirants, by aspirants.

HomeMocksPracticeStats
  1. Home
  2. ›
  3. PYQs
  4. ›
  5. TNPSC Group-I
  6. ›
  7. 2025
  8. ›
  9. Q16

TNPSC Group-I 2025 · Question 16 of 66

0.10 M of weak acid is found to be dissociated to the extent of 1.20% at 25C. Its dissociation constant is

Chemistry - Chemical Equilibrium

  1. A1.44 x 10^-5Correct
  2. B1.44 x 10^-4
  3. C1.44 x 10^-3
  4. D1.44 x 10^-2

Answer: A. 1.44 x 10^-5

Explanation

Ka = C x alpha^2 = 0.10 x (0.012)^2 = 1.44 x 10^-5.

Source: TNPSC Group-I Prelims 2025 (held 15 June 2025) - official question paper via tnpscinfo.com (Impacteers TNPSC Coaching compilation)

← Q15View full paper (66 questions)Q17 →

Practice the full TNPSC Group-I 2025 paper

Timed test with all 66 questions, just like the real exam.

Start test