Which element has the atomic number 6?

The correct answer is C: Carbon. Carbon has atomic number 6, meaning it has 6 protons in its nucleus. It is the basis of all organic compounds.

Which railway service connects major cities with premium amenities and higher fares?

The correct answer is C: Rajdhani Express. Rajdhani Express is a premium intercity service connecting major cities with high-speed and premium amenities.

In automatic train protection systems, what does an 'aspect' in railway signaling indicate?

The correct answer is B: The visual appearance and color of a signal indicating instructions to the driver. Signal aspects (green, yellow, red) communicate specific instructions to train drivers regarding speed and movement permissions at that location.

The correct answer is A: 36. 15% of 240 = (15/100) × 240 = 36

Which initiative aims to reduce carbon emissions from Indian Railways by 2030?

The correct answer is A: Green Railway Mission. The Green Railway Mission focuses on reducing carbon emissions through renewable energy and electrification.

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Railway RRB / NTPC
Technical Knowledge (NTPC)

NTPC, Group D, JE — all sections

15 Q 5 Topics Take Mock Test

Difficulty: All Easy Medium Hard 11–15 of 15

Topics in Railway RRB / NTPC

All General Science 100 Mathematics 18 Current Affairs (Railway) 100 Indian Railway GK 100 Technical Knowledge (NTPC) 100

Q.11 Hard Technical Knowledge (NTPC)

Which railway zone is the largest in terms of route kilometers?

A Central Railway

B Northern Railway

C Indian Railways (entire network)

D Southern Railway

Correct Answer: B. Northern Railway

EXPLANATION

The Northern Railway zone has the largest route length among all railway zones in India.

Test

Q.12 Hard Technical Knowledge (NTPC)

Which of the following is NOT a function of railway sleepers?

A To transfer loads from rails to ballast

B To maintain gauge distance between rails

C To control train speed

D To provide lateral stability to rails

Correct Answer: C. To control train speed

EXPLANATION

Sleepers (ties) support rails, maintain gauge, and distribute loads; train speed control is managed by braking systems and track design, not sleepers.

Test

Q.13 Hard Technical Knowledge (NTPC)

What is the normal track curvature radius for broad gauge on Indian Railways?

A 500 meters minimum

B 800 meters minimum

C 1000 meters minimum

D 1200 meters minimum

Correct Answer: B. 800 meters minimum

EXPLANATION

The minimum track curvature radius for broad gauge is approximately 800 meters on Indian Railways.

Test

Q.14 Hard Technical Knowledge (NTPC)

Which organization is responsible for railway safety in India?

A NITI Aayog

B Office of Chief Safety Officer, Ministry of Railways

C DGCA

D National Highway Authority of India

Correct Answer: B. Office of Chief Safety Officer, Ministry of Railways

EXPLANATION

The Office of Chief Safety Officer under the Ministry of Railways oversees railway safety in India.

Test

Q.15 Hard Technical Knowledge (NTPC)

What is the standard rail section weight used in Indian Railways (in kg/m)?

A 45 kg/m

B 52 kg/m

C 60 kg/m

D 75 kg/m

Correct Answer: B. 52 kg/m

EXPLANATION

52 kg/m is the standard rail section weight commonly used on Indian Railway routes.

Test

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Railway RRB / NTPC Technical Knowledge (NTPC)

Railway RRB / NTPC
Technical Knowledge (NTPC)