Knowledge Booster: NAIR Edition (24 Apr 2026)
Welcome to today's NAIR Knowledge Booster! We've handpicked 10 essential questions from our database to help you sharpen your skills. Dive in and test your knowledge!
Q1. The periodicity of Loco maintenance schedule IB for coaching locos (conventional Loco) is.
- A) 40+/-3 days
- B) 80+/-3 days
- C) 60+/-3 days
- D) None of these
Correct Answer: 80+/-3 days
Explanation: Conventional coaching locomotives follow a primary maintenance schedule (IB) roughly every 80 days to ensure long-term reliability[cite: 3712, 3715, 3729].
Q2. On how many days in a week is supply of rakes against Premium indent done on priority?
- A) 1
- B) 2
- C) 3
- D) 4
Correct Answer: 2
Explanation: Premium indents are prioritized for rake supply on two specific days of the week[cite: 2026, 2040].
Q3. What does REMMLOT stand for?"
- A) Remote Electric Locomotive Management and Monitoring System
- B) Remote Monitoring and Management of Locomotives and Trains
- C) Rail Engine Mobile Management and Observation Tool
- D) Real-time Engine Monitoring and Mobility System
Correct Answer: Remote Monitoring and Management of Locomotives and Trains
Explanation: REMMLOT is the system used for remote asset management of locos and trains. [cite: 1190, 1207]
Q4. What does RTIS stands for?
- A) Right Time Train Information System
- B) Real Time Train Information System
- C) Real Time Terminal Information System
- D) None of the given options
Correct Answer: Real Time Train Information System
Explanation: RTIS uses satellite tracking to provide accurate, live updates on train location and speed to control offices.
Q5. SFOORTI' App is used for?
- A) Monitoring and managing freight business
- B) Generation of RR
- C) Monitoring punctuality of Express trains
- D) None of the given options
Correct Answer: Monitoring and managing freight business
Explanation: SFOORTI is a GIS-based app used by management to track freight trains and optimize commodity flows across the network.
Q6. Explosives are divided into how many classes?
- A) 3
- B) 5
- C) 7
- D) None of these
Correct Answer: 7
Explanation: Hazardous explosives are categorized into seven distinct classes based on their chemical properties and risk levels[cite: 3479, 3485, 3500].
Q7. The Certificate of Competency for operation of Block Instrument shall be valid for a period of years.
- A) Two
- B) Three
- C) Four
- D) None of these
Correct Answer: Three
Explanation: Staff must undergo a refresher and have their competency certificate for block working renewed every 3 years[cite: 4373, 4377, 4397].
Q8. Collision Train Accidents will be termed as consequential train Accidents in categories."
- A) A1 to A2
- B) A1 to A3
- C) A1 to A4
- D) None of these
Correct Answer: A1 to A4
Explanation: Consequential accidents involving collisions are categorized under groups A1 to A4. [cite: 305, 320]
Q9. Inquiry of railway accident by CRS is mentioned under which section of the Railway Act 1989?
- A) Section 114
- B) Section 115
- C) Section 116
- D) None of these
Correct Answer: Section 114
Explanation: Section 114 of the Railways Act 1989 specifically details the procedures and powers of the Commissioner of Railway Safety during inquiries[cite: 2881, 2883, 2904].
Q10. At a class 'A' station to grant line clear the line must be clear up to?
- A) Outermost facing point
- B) Starter
- C) Home Signal
- D) None of these
Correct Answer: Starter
Explanation: At A-class stations, permission to approach (Line Clear) requires the line to be unoccupied up to the Starter signal.
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