Testwala logoTestwala
HomeMocksPracticePYQsDashboard
Testwala logoTestwala

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. Testwala is not affiliated with the Staff Selection Commission, IBPS, SBI, RBI, NABARD, SEBI or Indian Railways.

© 2026 Testwala. All rights reserved.

Built for aspirants, by aspirants.

HomeMocksPracticeStats
  1. Home
  2. ›
  3. PYQs
  4. ›
  5. BPSC (Bihar PCS)
  6. ›
  7. 2019
  8. ›
  9. Q54

BPSC (Bihar PCS) 2019 · Question 54 of 148

The by-product of photosynthesis is

General Science

  1. ACO2
  2. BO2Correct
  3. CEnergy
  4. DSugar
  5. ENone of the above/More than one of the above

Answer: B. O2

Explanation

Oxygen (O2) is the by-product of photosynthesis.

Source: Jagranjosh

← Q53View full paper (148 questions)Q55 →

Practice the full BPSC (Bihar PCS) 2019 paper

Timed test with all 148 questions, just like the real exam.

Start test