20th February Shift 1 — RRB JE PYQ

100 Questions • 90 Minutes • PYQ Mock Test in Hindi and English

Sample Questions from this Test

Question 1:

A sound wave travels from air into water. How does its frequency, speed, and wavelength change as it crosses the boundary?
A.Its frequency increases, speed remains the same, and wavelength decreases
B.Its frequency decreases, speed decreases, and wavelength increases
C.Its frequency remains constant, speed decreases, and wavelength decreases
D.Its frequency remains constant, speed increases, and wavelength increases

• Key Fact: Frequency remains constant; speed and wavelength change with the medium.

• Supporting Detail: Wave frequency is fixed by the source.

• Related Concept: Using v=fλv=f\lambda, when speed increases, wavelength increases at constant frequency.

• Why wrong options are wrong: Frequency is source-controlled; speed is medium-controlled.

• Exam Trick: Remember: source fixes ff, medium fixes vv.

• Additional Info: A boundary changes wave speed and wavelength, not source frequency.

Question 2:

Seven people, A, L, M, I, R, H and S, are sitting in a row, facing north. Only three people sit to the left of A. Only H sits to the right of R. Only three people sit between R and L. M sits at some place to the left of I but at some place to the right of S. How many people sit between S and I?
A.Two
B.Four
C.One
D.Three

• Given Conditions: Read all stated clues exactly as given.

• Deduction Process: Place A at position 4. Since only H is to the right of R and three people are between R and L, the R-L-H arrangement fixes the remaining positions; S-M-I must occur in increasing order, leaving three people between S and I.

• Final Answer: Option 4, Three.

• Exam Trick: Convert each clue into a short positional relation before drawing the arrangement.

Question 3:

The Deccan Plateau is separated from the Chota Nagpur Plateau by which of the following?
A.Vindhya Range
B.Aravalli Hills
C.Mahanadi Basin
D.Western Ghats

• Key Fact: The Vindhya Range separates the Deccan Plateau from the Chota Nagpur Plateau.

• Supporting Detail: The Deccan and Chota Nagpur plateaus are distinct physiographic regions of peninsular India.

• Related Concept: The Aravallis are in north-west India and the Western Ghats border the Deccan on the west.

• Why wrong options are wrong: Mahanadi Basin is not the named separating range in this question.

• Exam Trick: Think: Vindhya = central India divider.

• Additional Info: Plateau questions are often solved by recalling major physiographic boundaries.

Question 4:

Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only. (Note: All numbers are single digit numbers only.) (Left) 8 9 & 8 $ 5 # @ & # 4 @ 3 ! + ? 4 5 & 8 (Right) If all the symbols are dropped from the series, which of the following will be seventh from the right?
A.8
B.5
C.4
D.3

• Given Conditions: Read all stated clues exactly as given.

• Deduction Process: Remove every symbol and keep only digits: 8, 9, 8, 5, 4, 3, 4, 5, 8. Counting from the right gives 8 as the seventh digit.

• Final Answer: Option 1, 8.

• Exam Trick: Convert each clue into a short positional relation before drawing the arrangement.

Question 5:

A young child is diagnosed with both myopia and hypermetropia in different eyes. What is the most appropriate corrective approach?
A.Using bifocal lenses in both eyes
B.Providing glasses with different lenses for each eye (concave for one, convex for the other)
C.Providing identical convex lenses for both eyes
D.Using cylindrical lenses in both eyes

• Key Fact: Different refractive errors in different eyes require different corrective lenses.

• Supporting Detail: Myopia is corrected with a concave lens; hypermetropia with a convex lens.

• Related Concept: A single identical lens type would not correct opposite refractive errors in the two eyes.

• Why wrong options are wrong: Bifocal and cylindrical lenses are not the appropriate basic correction described here.

• Exam Trick: Myopia = minus/concave; hypermetropia = plus/convex.

• Additional Info: Correction is prescribed eye-wise according to the refractive error.

Question 6:

217 is related to 115 following a certain logic. Following the same logic, 183 is related to 81. To which of the given options is 234 related, following the same logic? (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
A.132
B.139
C.121
D.145

• Given Conditions: Read all stated clues exactly as given.

• Deduction Process: The rule is subtract 102: 217−102=115217-102=115 and 183−102=81183-102=81. Therefore 234−102=132234-102=132.

• Final Answer: Option 1, 132.

• Exam Trick: Convert each clue into a short positional relation before drawing the arrangement.

Question 7:

Who has been elected as the President of Centre of Films for Children and Young People (CIFEJ) for the 2025–2027 term?
A.SS Rajamouli
B.Lokesh Kanagaraj
C.Jitendra Mishra
D.Om Raut

• Key Fact: Jitendra Mishra was elected CIFEJ President for 2025–2027.

• Supporting Detail: The question refers specifically to the Centre of Films for Children and Young People.

• Related Concept: The other names are Indian film personalities but are not the source-marked CIFEJ President.

• Why wrong options are wrong: The incorrect names do not match the office asked in the source.

• Exam Trick: Remember: CIFEJ 2025–27 → Jitendra Mishra.

• Additional Info: Keep the term 2025–2027 with the name for current-affairs recall.

Question 8:

Which statement correctly describes a heterogeneous mixture?
A.Its particles are uniformly distributed at particle level
B.Its composition remains fixed and constant always
C.Its composition is not uniform throughout the mixture
D.Its components cannot be separated by physical methods

• Key Fact: A heterogeneous mixture has non-uniform composition throughout.

• Supporting Detail: Different portions can have different composition or visible phases.

• Related Concept: A homogeneous mixture is uniform throughout.

• Why wrong options are wrong: Physical separation is possible for many mixtures, so option 4 is not the defining feature.

• Exam Trick: Heterogeneous = non-uniform.

• Additional Info: Examples include sand-water and oil-water.

Question 9:

Which of the following does NOT describe a property of ethanol (C2H5OHC_2H_5OH)?
A.It is a clear, colourless liquid with a pleasant smell.
B.It reacts with sodium to release hydrogen gas.
C.It is soluble in water in all proportions.
D.It turns blue litmus paper red.

• Key Fact: Ethanol does not turn blue litmus red; it is not an acid in the way described.

• Supporting Detail: Ethanol is a clear, colourless liquid and reacts with sodium to release hydrogen.

• Related Concept: It is miscible with water in all proportions.

• Why wrong options are wrong: The other three statements describe accepted properties in the source context.

• Exam Trick: Ethanol ≠ acid indicator change.

• Additional Info: Its formula is C₂H₅OH.

Question 10:

Govind starts from Point A and drives 5 km towards south. He then takes a left turn, drives 5 km, turns left and drives 12 km. He then takes a left turn and drives 11 km. He takes a final left turn, drives 7 km and stops at Point P. How far (shortest distance) and towards which direction should he drive in order to reach Point A again? (All turns are 90° turns only unless specified.)
A.6 km to the east
B.5 km to the west
C.6 km to the west
D.5 km to the east

• Given Conditions: Read all stated clues exactly as given.

• Deduction Process: Track the turns on a compass. After the five legs, P is 6 km west of A on the same horizontal line. Therefore the shortest return to A is 6 km east.

• Final Answer: Option 1, 6 km to the east.

• Exam Trick: Convert each clue into a short positional relation before drawing the arrangement.

+ 90 more questions inside...