20 Important RRB Group D Previous Year G.S Questions

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Hello aspirants! General Science is a vital part of the RRB Group D exam and tests your conceptual knowledge on Physics, Chemistry and Biology. Previous year questions allow you to understand the topics, difficulty level and exam pattern effectively.

In this article, we provide 20 important General Science MCQs from RRB Group D past papers along with answers. Practice these questions to gain more clarity and boost your preparation.

RRB Group D Previous Year G.S Questions

Q1. Who discovered the radioactive element radium?

  • Marie Curie

Q2. Which scientist proposed the chemical evolution theory for the origin of life?

  • A.I. Oparin

Q3. The deficiency of which vitamin causes night blindness?

  • Vitamin A

Q4. Which gland secretes growth hormone in human body?

  • Pituitary gland

Q5. Who invented the smallpox vaccine?

  • Edward Jenner

Q6. Which of the following is used to separate different components from petroleum?

  • Fractional distillation

Q7. Hematite is an ore of which element?

  • Iron

Q8. Baking soda is the common name of which compound?

  • Sodium bicarbonate

Q9. Which gas is used in refrigeration to produce cooling?

  • Ammonia

Q10. Cellulose is a polymer of which monomer?

  • Glucose

Q11. Which metal is mixed with gold to make it harder and more durable for jewellery?

  • Copper

Q12. Radar works on the principle of?

  • Reflection of radio waves

Q13. Who discovered the bacterium that causes Anthrax?

  • Robert Koch

Q14. Which gland is known as the master gland of the human body?

  • Pituitary gland

Q15. Which part of the eye is responsible for focusing light?

  • Cornea

Q16. Name the Indian scientist who founded the Tata Institute of Fundamental Research.

  • Homi J. Bhabha

Q17. Which acid is formed when milk gets sour?

  • Lactic acid

Q18. The deficiency of which vitamin causes rickets in children?

  • Vitamin D

Q19. Who founded the Indian Association for the Cultivation of Science?

  • Dr. Mahendra Lal Sircar

Q20. Who discovered the bacterium that causes Tuberculosis?

  • Robert Koch

Tips to Solve Previous Year Questions

  • Strengthen your basics and fundamentals of Physics, Chemistry and Biology
  • Practice mock tests to improve speed and accuracy
  • Revise concepts regularly and clear your doubts
  • Focus more on the commonly asked topics and subjects
  • Solve previous papers under time pressure
  • Don’t get stuck on any question and move to the next

I hope these RRB Group D previous year questions help you prepare better for the General Science section. All the best!


Solving previous year papers is the best way to excel in RRB Group D exam. These 20 important General Science MCQs, compiled from past papers, will help you understand the topics, question format, exam pattern and difficulty level.

Practice mock tests in a simulated environment to improve your speed and accuracy. Strengthen fundamentals, work on weaker areas and revise regularly. Following previous years’ papers diligently will help you ace the actual exam with confidence.

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