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RRB NTPC Undergraduate CBT 1 2025 · Shift 3

RRB NTPC Undergraduate CBT 1 17 Jun 2026 Shift 3 – Question Paper

100 questions · 100 marks · 90 minutes · +1 for a correct answer, −1/3 for a wrong one. With answer key and detailed solutions in Hindi and English.

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Paper pattern

SectionQuestionsMarks
General Awareness4040
Mathematics3030
General Intelligence and Reasoning3030

Sample questions from this paper

Q1.
When a stretched rubber band is released, its stored potential energy is converted into which form of energy?
जब किसी खिंचे हुए रबर बैंड को छोड़ा जाता है, तो उसमें संचित स्थितिज ऊर्जा किस प्रकार की ऊर्जा में परिवर्तित होती है?
  1. AHydraulic Energyजलीय ऊर्जा (Hydraulic Energy)
  2. BChemical Energyरासायनिक ऊर्जा
  3. CKinetic Energyगतिज ऊर्जा
  4. DGeothermal Energyभूतापीय ऊर्जा
Show answer

Concept: A stretched rubber band stores elastic potential energy.

  1. On release, the band snaps back and moves — energy of motion = kinetic energy.
  2. Chemical, hydraulic and geothermal energy are not involved here.

Yaad rakhein: Stretched spring/bow/rubber band: PE (stored) → KE (motion).

Answer: (C) Kinetic Energy

अवधारणा: खिंचे हुए रबर बैंड में प्रत्यास्थ स्थितिज ऊर्जा (elastic potential energy) संचित होती है।

  1. छोड़ने पर बैंड गति करता है — गति की ऊर्जा = गतिज ऊर्जा (kinetic energy)।
  2. रासायनिक, हाइड्रोलिक या भू-तापीय ऊर्जा यहाँ शामिल नहीं।

याद रखें: खिंची स्प्रिंग/धनुष/रबर बैंड: स्थितिज → गतिज ऊर्जा।

उत्तर: (C) गतिज ऊर्जा (Kinetic Energy)

RRB NTPC Undergraduate CBT 1General AwarenessPhysics – Energy Conversion
Q41.
An amount of ₹6,900 is obtained after 3 years at simple interest at the rate of 5% interest per annum. What is the principal invested?
साधारण ब्याज पर 5% वार्षिक ब्याज दर से 3 वर्ष बाद ₹6,900 की राशि प्राप्त होती है। निवेशित मूलधन कितना है?
  1. A₹5,600
  2. B₹6,000
  3. C₹5,800
  4. D₹6,400
Show answer

Concept: Amount A=P(1+RT100) under simple interest.

  1. Total SI for 3 years =3×5=15% of P.
  2. A=1.15P=6900
  3. P=69001.15=6000

Trick: Amount = 115 parts, principal = 100 parts: 6900115×100=6000.

Answer: (B) ₹6,000

अवधारणा: साधारण ब्याज में मिश्रधन A=P(1+RT100)।

  1. 3 वर्षों का कुल ब्याज =3×5=15% (मूलधन का)।
  2. A=1.15P=6900
  3. P=69001.15=6000

ट्रिक: मिश्रधन = 115 भाग, मूलधन = 100 भाग: 6900115×100=6000।

उत्तर: (B) ₹6,000

RRB NTPC Undergraduate CBT 1MathematicsSimple Interest
Q71.
What should come in place of ‘?’ in the given series?
4 4 8 12 16 28 32 ?
दी गई श्रृंखला में ‘?’ के स्थान पर क्या आना चाहिए?
4 4 8 12 16 28 32 ?
  1. A68
  2. B62
  3. C64
  4. D60
Show answer

Concept: Split the series into two alternate series.

  1. Odd positions: 4,8,16,32 – each ×2.
  2. Even positions: 4,12,28,? – differences 8,16, so next difference 32.
  3. ?=28+32=60

Trick: When numbers jump irregularly, check alternate terms first.

Answer: (D) 60

अवधारणा: श्रृंखला को दो एकांतर (alternate) श्रृंखलाओं में बाँटें।

  1. विषम स्थान: 4,8,16,32 – हर बार ×2।
  2. सम स्थान: 4,12,28,? – अंतर 8,16, अतः अगला अंतर 32।
  3. ?=28+32=60

ट्रिक: संख्याएँ अनियमित बढ़ें तो पहले एकांतर पद जाँचें।

उत्तर: (D) 60

RRB NTPC Undergraduate CBT 1General Intelligence and ReasoningNumber series

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