RRB JE Important Questions 2026: Check Top MCQs for CBT 2 Exam Preparation

RRB JE CBT 2 Important Questions: RRB has officially announced that the JE CBT 2 exam is scheduled for 2nd July 2026. This recruitment fills a total of 2,588 vacancies for the posts of Junior Engineer, Depot Material Superintendent, and Chemical & Metallurgical Assistant. As per the exam pattern, CBT 2 has 150 questions of 150 marks with a duration of 120 minutes. Those candidates who qualified for the CBT 1 can prepare for the CBT 2 exam. To help aspirants, Jagran Josh has compiled a list of 40 Important MCQs that include questions from all topics, such as Physics & Chemistry, Computers, Environment, and branch-wise Technical Ability.

Important MCQs For RRB JE CBT 2 Exam 2026

As the examination is scheduled for 2 July, Candidates do not have much time left for the revision. We have provided the candidates with some of the most important MCQs from all these subjects to help them in their preparation. This CBT 2 exam includes Physics & Chemistry, Computers, Environment, General Awareness, and branch-wise Technical Abilities. Candidates are advised to practice these MCQs to revise key concepts, understand the exam pattern, and assess their preparation level before the exam.

Physics & Chemistry

Q1. The SI unit of force is:

(a) Joule

(b) Newton

(c) Pascal

(d) Watt

Answer: (b) Newton

Q2. Which of the following is a noble gas?

(a) Nitrogen

(b) Argon

(c) Hydrogen

(d) Chlorine

Answer: (b) Argon

Q3. The process of conversion of a solid directly into a vapour is called:

(a) Evaporation

(b) Sublimation

(c) Condensation

(d) Distillation

Answer: (b) Sublimation

Q4. The pH value of pure water is:

(a) 5

(b) 6

(c) 7

(d) 8

Answer: (c) 7

Q5. Which law states that pressure and volume of a gas are inversely proportional at constant temperature?

(a) Charles's Law

(b) Boyle's Law

(c) Newton's Law

(d) Ohm's Law

Answer: (b) Boyle's Law

Q6. The chemical formula of baking soda is:

(a) NaCl

(b) NaHCO₃

(c) CaCO₃

(d) Na₂CO₃

Answer: (b) NaHCO₃

Q7. The unit of electrical resistance is:

(a) Ampere

(b) Volt

(c) Ohm

(d) Farad

Answer: (c) Ohm

Basics of Computers and Applications

Q8. Which device is used to convert digital signals into analog signals?

(a) Router

(b) Modem

(c) Switch

(d) Hub

Answer: (b) Modem

Q9. RAM stands for:

(a) Read Access Memory

(b) Random Access Memory

(c) Run Access Memory

(d) Read Allocated Memory

Answer: (b) Random Access Memory

Q10. Which of these is an operating system?

(a) MS Word

(b) Linux

(c) Excel

(d) Photoshop

Answer: (b) Linux

Q11. The full form of CPU is:

(a) Central Processing Unit

(b) Central Program Unit

(c) Computer Processing Unit

(d) Control Processing Unit

Answer: (a) Central Processing Unit

Q12. Which key is used to refresh a webpage?

(a) F2

(b) F5

(c) F8

(d) F10

Answer: (b) F5

Q13. Which of the following is an input device?

(a) Monitor

(b) Printer

(c) Scanner

(d) Speaker

Answer: (c) Scanner

Basics of Environment and Pollution Control

Q14. Which gas is mainly responsible for global warming?

(a) Oxygen

(b) Carbon dioxide

(c) Nitrogen

(d) Helium

Answer: (b) Carbon dioxide

Q15. The Bhopal Gas Tragedy of 1984 was caused by the leakage of which gas?

(a) Methyl Isocyanate

(b) Carbon Monoxide

(c) Sulphur Dioxide

(d) Ammonia

Answer: (a) Methyl Isocyanate

Q16. Which of the following is a renewable source of energy?

(a) Coal

(b) Petroleum

(c) Solar energy

(d) Natural gas

Answer: (c) Solar energy

Q17. The ozone layer protects the Earth from:

(a) Visible light

(b) Ultraviolet rays

(c) Infrared rays

(d) Radio waves

Answer: (b) Ultraviolet rays

General Awareness 

Q18. The headquarters of Indian Railways is located in:

(a) Mumbai

(b) Kolkata

(c) New Delhi

(d) Chennai

Answer: (c) New Delhi

Q19. Who is known as the "Father of Indian Railways"?

(a) Lord Dalhousie

(b) Lord Curzon

(c) Lord Mountbatten

(d) Lord Wellesley

Answer: (a) Lord Dalhousie

Q20. Which Indian state has the largest railway network?

(a) Maharashtra

(b) Uttar Pradesh

(c) Rajasthan

(d) Madhya Pradesh

Answer: (b) Uttar Pradesh

Civil Engineering

Q21. The maximum size of aggregate used in reinforced cement concrete (RCC) work is generally:

(a) 10 mm

(b) 20 mm

(c) 40 mm

(d) 60 mm

Answer: (b) 20 mm

Q22. Which of the following bonds is used in brick masonry to provide maximum strength?

(a) Stretcher bond

(b) English bond

(c) Header bond

(d) Flemish bond

Answer: (b) English bond

Q23. The slump test is conducted to determine the:

(a) Strength of concrete

(b) Workability of concrete

(c) Setting time of cement

(d) Density of concrete

Answer: (b) Workability of concrete

Q24. The angle of repose of soil depends on:

(a) Moisture content

(b) Particle size and shape

(c) Both a and b

(d) Neither a nor b

Answer: (c) Both a and b

Q25. Which surveying instrument is used to measure horizontal and vertical angles?

(a) Theodolite

(b) Plane table

(c) Dumpy level

(d) Chain

Answer: (a) Theodolite

Mechanical Engineering

Q26. The efficiency of a Carnot engine depends on:

(a) Working substance

(b) Temperature of source and sink

(c) Pressure

(d) Volume

Answer: (b) Temperature of source and sink

Q27. Which type of stress is induced in a shaft under torsion?

(a) Tensile stress

(b) Compressive stress

(c) Shear stress

(d) Bending stress

Answer: (c) Shear stress

Q28. The ratio of actual mechanical advantage to ideal mechanical advantage of a machine is called:

(a) Velocity ratio

(b) Efficiency

(c) Load factor

(d) Friction factor

Answer: (b) Efficiency

Q29. In a four-stroke petrol engine, the power stroke occurs during:

(a) Suction

(b) Compression

(c) Expansion

(d) Exhaust

Answer: (c) Expansion

Q30. Which welding process uses a non-consumable tungsten electrode?

(a) MIG welding

(b) TIG welding

(c) Arc welding

(d) Spot welding

Answer: (b) TIG welding

Electrical Engineering

Q31. Ohm's Law gives the relationship between:

(a) Voltage, resistance, and power

(b) Voltage, current, and resistance

(c) Current, power, and frequency

(d) Resistance, frequency, and power

Answer: (b) Voltage, current, and resistance

Q32. The unit of electrical power is:

(a) Joule

(b) Volt

(c) Watt

(d) Ohm

Answer: (c) Watt

Q33. Which type of motor is commonly used in ceiling fans?

(a) Induction motor

(b) Synchronous motor

(c) DC series motor

(d) Universal motor

Answer: (a) Induction motor

Q34. The device used to step up or step down AC voltage is called a:

(a) Generator

(b) Transformer

(c) Rectifier

(d) Inverter

Answer: (b) Transformer

Q35. Which material is commonly used as an insulator in electrical cables?

(a) Copper

(b) Aluminium

(c) PVC

(d) Iron

Answer: (c) PVC

Electronics & CSE

Q36. Which gate gives output 1 only when all inputs are 1?

(a) OR gate

(b) AND gate

(c) NOR gate

(d) NAND gate

Answer: (b) AND gate

Q37. A diode allows current to flow in:

(a) Both directions

(b) One direction only

(c) No direction

(d) Alternating direction

Answer: (b) One direction only

Q38. Which memory is volatile in nature?

(a) ROM

(b) RAM

(c) Hard disk

(d) Pen drive**

Answer: (b) RAM

Q39. The basic building block of a digital circuit is:

(a) Transistor

(b) Logic gate

(c) Capacitor

(d) Resistor

Answer: (b) Logic gate

Q40. Which topology connects all devices to a single central cable?

(a) Star

(b) Ring

(c) Bus

(d) Mesh

Answer: (c) Bus

The candidates appearing in the RRB JE CBT 2 2026 examination can refer to these MCQs to revise important concepts from all the subjects before the examination. Quick practice of these questions is helpful in increasing speed and accuracy, and also boosts confidence in the exam. We hope all the candidates perform well in the RRB JE CBT 2 Examination.