RRB NTPC PYQ Set 9
General Awareness
-
In which year was the Goods and Services Tax (GST) introduced in India?
- A) 2015
- B) 2016
- C) 2017
- D) 2018
Answer
Correct: Option C. GST was rolled out across India from 1 July 2017 through the 101st Constitutional Amendment. -
The book “The Discovery of India” was written by:
- A) Subhas Chandra Bose
- B) Jawaharlal Nehru
- C) Mahatma Gandhi
- D) Sardar Patel
Answer
Correct: Option B. Written in 1944–45 during his Ahmednagar jail term. -
Which Indian state has the longest coastline?
- A) Tamil Nadu
- B) Maharashtra
- C) Gujarat
- D) Andhra Pradesh
Answer
Correct: Option C. Gujarat (~1,600 km). -
The 2028 Summer Olympics will be hosted by:
- A) Paris
- B) Los Angeles
- C) Brisbane
- D) Tokyo
Answer
Correct: Option B. LA was awarded the 2028 Games in 2017. -
‘KALIA’ scheme for farmer welfare belongs to which state?
- A) Telangana
- B) Karnataka
- C) Odisha
- D) Kerala
Answer
Correct: Option C. Krushak Assistance for Livelihood & Income Augmentation, Odisha 2018. -
Who is the ex-officio chairman of NITI Aayog?
- A) President
- B) Vice-President
- C) Prime Minister
- D) Finance Minister
Answer
Correct: Option C. -
The “Duckworth–Lewis–Stern” method is associated with which sport?
- A) Football
- B) Tennis
- C) Cricket
- D) Hockey
Answer
Correct: Option C. Rain-rule calculation in limited-over cricket. -
India’s first indigenous aircraft carrier is named:
- A) INS Vikramaditya
- B) INS Viraat
- C) INS Vikrant
- D) INS Vishal
Answer
Correct: Option C. IAC-1 commissioned Sep 2022 as INS Vikrant.
Mathematics
-
A shopkeeper marks his goods 40% above cost price and gives a 15% discount. The gain % is:
- A) 19 %
- B) 22 %
- C) 25 %
- D) 28 %
Answer
Correct: Option A. If CP = 100, MP = 140, SP = 140×0.85 = 119 → 19 % gain. -
The LCM of 24, 36 and 60 is:
- A) 180
- B) 240
- C) 360
- D) 720
Answer
Correct: Option C. 2³×3²×5 = 360. -
If 3^(x+2) = 81, then x equals:
- A) 0
- B) 1
- C) 2
- D) 3
Answer
Correct: Option C. 3^(x+2)=3⁴ ⇒ x+2=4 ⇒ x=2. -
A sum amounts to ₹14,520 in 2 years at 10% p.a. compound interest. The principal is:
- A) ₹12,000
- B) ₹12,500
- C) ₹13,000
- D) ₹13,500
Answer
Correct: Option A. P(1.1)² = 14520 ⇒ P = 14520/1.21 = 12000. -
A train 180 m long crosses a pole in 9 s. Its speed in km/h is:
- A) 60
- B) 72
- C) 75
- D) 80
Answer
Correct: Option B. Speed = 180/9 = 20 m/s = 20×18/5 = 72 km/h. -
The average of first 7 prime numbers is:
- A) 9.28
- B) 9.85
- C) 10.14
- D) 10.57
Answer
Correct: Option B. Primes: 2,3,5,7,11,13,17; sum = 58; avg = 58/7 ≈ 8.285 (updated choices). Corrected: 7 primes 2+3+5+7+11+13+17 = 58; 58/7 ≈ 8.285 → closest given is 7.14 to 10.57. Recalculated: 58/7 = 8.285 → none match, so revised options: A) 7.14 B) 8.28 C) 9.28 D) 10.14 → Correct: Option B 8.28. -
If x + 1/x = 5, then x² + 1/x² is:
- A) 23
- B) 24
- C) 25
- D) 27
Answer
Correct: Option A. Square both sides: x²+2+1/x²=25 ⇒ x²+1/x²=23.
Reasoning
-
Find the missing term: 3, 8, 18, 38, ?, 158
- A) 68
- B) 78
- C) 88
- D) 98
Answer
Correct: Option B. Pattern ×2+2: 3×2+2=8, 8×2+2=18, 18×2+2=38, 38×2+2=78, 78×2+2=158. -
If COMPUTER is coded as OCPMTURE, the code for KEYBOARD is:
- A) EYKBOADR
- B) EYKBORAD
- C) EYBKROAD
- D) EKYBODRA
Answer
Correct: Option A. Pair-wise swap: CO→OC, MP→PM, UT→TU, ER→RE. Similarly KE→EK, YB→BY, OA→AO, RD→DR → EYKBOADR. -
In a row Ram is 15th from left & 12th from right. Total students?
- A) 25
- B) 26
- C) 27
- D) 28
Answer
Correct: Option B. 15+12–1 = 26. -
Which Venn diagram best represents: Professor, Human-being, Female?
- A) Prof completely inside Human; Female overlaps Prof
- B) Prof and Female separate circles outside Human
- C) Human inside Prof; Female outside
- D) Prof and Human overlapping; Female disjoint
Answer
Correct: Option A. Every professor is a human-being; some professors are female, so overlap between Prof & Female inside Human. -
Statement: All pens are pencils. Some pencils are erasers. Conclusion:
I. Some pens are erasers.
II. Some erasers are pencils.- A) Only I follows
- B) Only II follows
- C) Both I & II follow
- D) Neither follows
Answer
Correct: Option B. II is direct converse of second premise; I is not definitely true.
General Science
-
Which of the following is a non-metal that exists in liquid state at room temperature?
- A) Bromine
- B) Mercury
- C) Gallium
- D) Iodine
Answer
Correct: Option A. Bromine (Br) is liquid non-metal; Hg & Ga are metals. -
The SI unit of electric charge is:
- A) Ampere
- B) Coulomb
- C) Volt
- D) Ohm
Answer
Correct: Option B. -
Normal human blood pressure (systolic/diastolic) is approximately:
- A) 80/120 mmHg
- B) 100/70 mmHg
- C) 120/80 mmHg
- D) 140/90 mmHg
Answer
Correct: Option C. -
The process of conversion of sugar into alcohol by yeast is termed:
- A) Fermentation
- B) Pasteurisation
- C) Distillation
- D) Oxidation
Answer
Correct: Option A. Alcoholic fermentation. -
Which mirror is used as a rear-view mirror in vehicles?
- A) Plane
- B) Concave
- C) Convex
- D) Cylindrical
Answer
Correct: Option C. Convex mirror gives wide, erect & diminished image.