Are you searching for the Railway recruitment board (RRB) of India's previous year or mock test papers? This post contains the free mock test paper of rrb senior section engineers or junior engineers 2015 with answer keys and prepared by exam shouters. It follows the same pattern of RRB's examination which help you to understand the exam pattern. The exam is objective type; multiple choice question papers. Total questions are 150 in numbers and you need to complete it with in 120 minutes. The questions are from the discipline knowledge testing (your discipline), general awareness, general science (basics physics, electronics, chemistry, biology etc), numerical ability and reasoning. Checkout RRB SSE/JE Free Mocke Test Paper 2015 -1
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Solved RRB SSE/JE Mock Question Papers
1. Who is the author of the book 'Freedom Behind Bars'?
(A) Kiran Bedi
(B) Jawaharlal Nehru
(C) Sheikh Abdullah
(D) Nelson Mandela
Answer: A
2. A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?
(A) Rs. 375
(B) Rs. 400
(C) Rs. 600
(D) Rs. 800
Answer: B
3. A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is:
(A) 45 km/hr
(B) 50 km/hr
(C) 54 km/hr
(D) 55 km/hr
Answer: B
4. The depth of cut in drilling is __________ the drill diameter.
(A) equal to
(B) one-fourth
(C) one-half
(D) double
Answer: C
5. When a shaft is subjected to a twisting moment, every cross-section of the shaft will be under
(A) tensile stress
(B) compressive stress
(C) shear stress
(D) bending stress
Answer: C
6. The group of metals Fe, Co, Ni may best called as
(A) transition metals
(B) main group metals
(C) alkali metals
(D) rare metals
Answer: A
7. Manav Seva Award has been instituted in the memory of
(A) Rajiv Gandhi
(B) Dr. Rajendra Prasad
(C) Indira Gandhi
(D) Acharya
Answer: A
8. The output of a NOT gate is HIGH when ________.
(A) the input is LOW
(B) the input is HIGH
(C) power is applied to the gate's IC
(D) power is removed from the gate's IC
Answer: A
9. A certain transformer has 400 turns in the primary winding and 2,000 turns in the secondary winding. The turns ratio is
(A) 0.2
(B) 0.4
(C) 5
(D) 25
Answer: C
10. In the following series: 14, 28, 20, 40, 32, 64, __. What number should come next?
(A) 52
(B) 56
(C) 96
(D) 128
Answer: B
11. The territory of Porus who offered strong resistance to Alexander was situated between the rivers of
(A) Sutlej and Beas
(B) Jhelum and Chenab
(C) Ravi and Chenab
(D) Ganga and Yamuna
Answer: B
12. DIVA : OPERA
(A) producer : theatre
(B) director : drama
(C) conductor : bus
(D) thespian : play
Answer: D
13. This is the plane upon which the top view is projected:
(A) Horizontal
(B) Frontal
(C) Profile
(D) Base
Answer: A
14. Plants growing on sand are called as
(A) chasmophytes
(B) oxylophytes
(C) lithophytes
(D) psammophytes
Answer: D
15. Suitable impurities are added to a semiconductor depending on its use. This is done in order to
(A) increase its life
(B) enable it to withstand higher voltages
(C) increase its electrical conductivity
(D) increase its electrical resistivity
Answer: C
16. Moment of inertia is
(A) vector
(B) scalar
(C) phasor
(D) tensor
Answer: D
17. The metallurgical process in which a metal is obtained in a fused state is called
(A) smelting
(B) roasting
(C) calcinations
(D) froth floatation
Answer: A
18. Who is the first Indian woman to win an Asian Games gold in 400m run?
(A) M.L.Valsamma
(B) P.T.Usha
(C) Kamaljit Sandhu
(D) K.Malleshwari
Answer: C
19. The ratio of the volume of voids to the volume of soil solids in a given soil mass, is known
(A) porosity
(B) specific gravity
(C) void ratio
(D) water content.
Answer: C
20. The friction experienced by a body, when in motion, is known as
(A) rolling friction
(B) dynamic friction
(C) limiting friction
(D) static friction
Answer: B
Related Exam Papers:-
- RRB SSE Chennai Previous Year Question Papers 2014 with keys
- RRB SSE Trivandrum 2015 Previous Year Question Papers with keys
- RRB JE Trivandrum 2014 Previous year Question Papers with keys
21. A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as
(A) Carnot cycle
(B) Stirling cycle
(C) Otto cycle
(D) Diesel cycle
Answer: D
22. Thermal diffusivity is a
(A) function of temperature
(B) physical property of a substance
(C) dimensionless parameter
(D) all of these
Answer: B
23. The great Victoria Desert is located in
(A) Canada
(B) West Africa
(C) Australia
(D) North America
Answer: C
24. How much time will it take for an amount of Rs. 450 to yield Rs. 81 as interest at 4.5% per annum of simple interest?
(A) 3.5 years
(B) 4 years
(C) 4.5 years
(D) 5 years
Answer: B
25. The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?
(A) 25% increase
(B) 50% increase
(C) 50% decrease
(D) 75% decrease
Answer: B
26. Mumps is a disease caused by
(A) fungus
(B) bacterium
(C) virus
(D) None of these
Answer: C
27. Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from
(A) east
(B) west
(C) northeast
(D) southeast
Answer: A
28. Rainbow is due to
(A) absorption of sunlight in minute water droplets
(B) diffusion of sunlight through water droplets
(C) ionisation of water deposits
(D) refraction and reflection of sunlight by water droplets
Answer: D
29. The section of the CPU that selects, interprets and sees to the execution of program instructions
(A) Memory
(B) Register unit
(C) Control unit
(D) ALU
Answer: C
30. ASCII stands for
(A) American standard code for information interchange
(B) All purpose scientific code for information interchange
(C) American security code for information interchange
(D) American Scientific code for information interchange
Answer: A
31. Convert decimal 213 to binary.
(A) 11001101
(B) 11010101
(C) 01111001
(D) 11100011
Answer: B
32. With the positive probe on an NPN base, an ohmmeter reading between the other transistor terminals should be:
(A) open
(B) infinite
(C) low resistance
(D) high resistance
Answer: C
33. 66 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in metres will be:
(A) 84
(B) 90
(C) 168
(D) 336
Answer: A
34. Two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is:
(A) 2 : 5
(B) 3 : 5
(C) 4 : 5
(D) 6 : 7
Answer: C
35. When a plot is sold for Rs. 18,700, the owner loses 15%. At what price must that plot be sold in order to gain 15%?
(A) Rs. 21,000
(B) Rs. 22,500
(C) Rs. 25,300
(D) Rs. 25,800
Answer: C
36. In magnetic disks, data is organized on the platter in a concentric sets of rings called
(A) sector
(B) track
(C) head
(D) block
Answer: B
37. A resistor is connected across a 50 V source. What is the current in the resistor if the color code is red, orange, orange, silver?
(A) 2 mA
(B) 2.2 mA
(C) 214 mA
(D) 21.4 mA
Answer: B
38. Amjad Ali Khan is associated with which of the following musical instruments?
(A) Sarod
(B) Veena
(C) Violin
(D) Sitar
Answer: A
39. Dr. Joon Lew of Korea, the recipient of international Gandhi Award is known for his service in the?
(A) Eradication of leprosy
(B) Campaigning against AIDS
(C) Against Drugs
(D) Against child labour
Answer: A
40: The average salinity of sea water is
(A) 3%.
(B) 3.5%
(C) 2.5%
(D) 2%
Answer: B
41. The weekly Commonweal was founded by
(A) Annie Besant
(B) Bipan Chandra Pal
(C) Bal Gangadhar Tilak
(D) Sarojini Naidu
Answer: A
42. The first Indian railway was laid in
(A) 1775
(B) 1804
(C) 1825
(D) 1853
Answer: D
43. Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following
(A) chain surveying
(B) compass surveying
(C) plan table surveying
(D) tacheometric surveying.
Answer: C
44.Two pipes A and B together can fill a cistern in 4 hours. Had they been opened separately, then B would have taken 6 hours more than A to fill the cistern. How much time will be taken by A to fill the cistern separately?
(A) 1 hour
(B) 2 hours
(C) 6 hours
(D) 8 hours
Answer: C
45. Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ?
(A) 4
(B) 10
(C) 15
(D) 16
Answer: D
46. Two numbers A and B are such that the sum of 5% of A and 4% of B is two-third of the sum of 6% of A and 8% of B. Find the ratio of A : B.
(A) 2 : 3
(B) 1 : 1
(C) 3 : 4
(D) 4 : 3
Answer: D
47. Garampani sanctuary is located at
(A) Junagarh, Gujarat
(B) Diphu, Assam
(C) Kohima, Nagaland
(D) Gangtok, Sikkim
Answer: B
48.Who declared that his ultimate aim was to wipe 'every tear from every eye'?
(A) Rajendra Prasad
(B) Sardar Patel
(C) Jawaharlal Nehru
(D) Mahatma Gandhi
Answer: C
49. Which of the following places is famous for Chikankari work, which is a traditional art of embroidery?
(A) Lucknow
(B) Hyderabad
(C) Jaipur
(D) Mysore
Answer: A
50. A computer program that converts an entire program into machine language at one time is called a/an
(A) interpreter
(B) simulator
(C) compiler
(D) commander
Answer: C
51. A moderator generally used in nuclear power plants is
(A) graphite
(B) heavy water
(C) concrete
(D) graphite and concrete
Answer: D
52. The injection pressure in a diesel engine is about
(A) 10 bar
(B) 100 bar
(C) 150 bar
(D) 500 bar
Answer: B
53. The pressure less than atmospheric pressure is known as
(A) suction pressure
(B) vacuum pressure
(C) negative gauge pressure
(D) all of these
Answer: D
54. The sole purpose of a commutator in a dc generator is to
(A) Increase output voltage
(B) Reduce sparking at brushes
(C) Provide smoother output
(D) Convert the induced ac into dc
Answer: D
55. When transistors are used in digital circuits they usually operate in the:
(A) active region
(B) breakdown region
(C) saturation and cutoff regions
(D) linear region.
Answer: C
56. Which bus is bidirectional?
(A) data bus
(B) control bus
(C) address bus
(D) multiplexed bus
Answer: A
57. The diode schematic arrow points to the:
(A) trivalent-doped material
(B) positive axial lead
(C) anode lead
(D) cathode lead
Answer: D
58. Name the indian cricketer who scored consecutive centuries in first three matches?
(A) Muhammed Azharrudin
(B) Sachin Tendulkar
(C) Rahul Dravid
(D) Saurav Ganguly
Answer: A
59. Mirage is due to
(A) unequal heating of different parts of the atmosphere
(B) magnetic disturbances in the atmosphere
(C) depletion of ozone layer in the atmosphere
(D) equal heating of different parts of the atmosphere
Answer: A
60. Oil raise up the wick in a lamp. The principle involves
(A) the diffusion of oil through the wick
(B) the liquid state of oil
(C) capillary action phenomenon
(D) volatility of oil
Answer: C
61. Other than spreading malaria, anopheles mosquitoes are also vectors of
(A) dengue fever
(B) filariasis
(C) encephalitis
(D) yellow fever
Answer: B
62. Who co-founded Hotmail in 1996 and then sold the company to Microsoft?
(A) Shawn Fanning
(B) Ada Byron Lovelace
(C) Sabeer Bhatia
(D) Ray Tomlinson
Answer: C
63. What was the active medium used in the first working laser ever constructed?
(A) A diamond block
(B) Helium-neon gas
(C) A ruby rod
(D) Carbon dioxide gas
Answer: C
64. The slip speed of an induction motor depends upon:
(A) Armature current
(B) Supply voltage
(C) Mechanical load
(D) Eddy currents
Answer: C
65. Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is:
(A) 9
(B) 11
(C) 13
(D) 15
Answer: D
66. The product of two numbers is 120 and the sum of their squares is 289. The sum of the number is:
(A) 20
(B) 23
(C) 169
(D) None of these
Answer: B
67. There is 60% increase in an amount in 6 years at simple interest. What will be the compound interest of Rs. 12,000 after 3 years at the same rate?
(A) Rs. 2160
(B) Rs. 3120
(C) Rs. 3972
(D) Rs. 6240
Answer: C
68. Find the odd man out.
3, 5, 11, 14, 17, 21
(A) 21
(B) 17
(C) 14
(D) 3
Answer: C
69. Three unbiased coins are tossed. What is the probability of getting at most two heads?
(A) 3 \4
(B) 1 \4
(C) 3 \8
(D) 7 \8
Answer: D
70. What was the day of the week on 17th June, 1998?
(A) Monday
(B) Tuesday
(C) Wednesday
(D) Thursday
Answer: C
71. FAG, GAF, HAI, IAH, ____
(A) JAK
(B) HAL
(C) HAK
(D) JAI
Answer: A
72. The most commonly used bleaching agent is
(A) alcohol
(B) carbon dioxide
(C) chlorine
(D) sodium chlorine
Answer: C
73. Nuclear sizes are expressed in a unit named
(A) Fermi
(B) angstrom
(C) newton
(D) tesla
Answer: A
74. Preamble enshrines the ideals of liberty, equality and fraternity - ideals inspired by the
(A) Russian Revolution
(B) Irish Revolution
(C) French Revolution
(D) US Constitution
Answer: C
75. Where is the Railway Staff College located?
(A) Pune
(B) Allahabad
(C) Vadodara
(D) Delhi
Answer: C
76. Normal adult human male has
(A) 10 gram of haemoglobin/100 gram of blood
(B) 14 gram of haemoglobin/100 gram of blood
(C) 18 gram of haemoglobin/100 gram of blood
(D) 24 gram of haemoglobin/100 gram of blood
Answer: B
77. The dynamic friction is the friction experienced by a body, when the body
(A) is in motion
(B) is at rest
(C) just begins to slide over the surface of the other body
(D) none of the above
Answer: A
78. In a centrifugal casting method
(A) core is made of sand
(B) core is made of ferrous metal
(C) core is made of non-ferrous metal
(D) no core is used
Answer: D
79. The ball bearings are provided with a cage
(A) to reduce friction
(B) to facilitate slipping of balls
(C) to prevent the lubricant from flowing out
(D) to maintain the balls at a fixed distance apart
Answer: D
80. If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance travelled by him is:
(A) 50 km
(B) 56 km
(C) 70 km
(D) 80 km
Answer: A
81. Three partners shared the profit in a business in the ratio 5 : 7 : 8. They had partnered for 14 months, 8 months and 7 months respectively. What was the ratio of their investments?
(A) 5 : 7 : 8
(B) 20 : 49 : 64
(C) 38 : 28 : 21
(D) None of these
Answer: B
82. Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg.
(A) 1 : 3
(B) 2 : 3
(C) 3 : 4
(D) 4 : 5
Answer: B
83. In how many ways can the letters of the word 'LEADER' be arranged?
(A) 72
(B) 144
(C) 360
(D) 720
Answer: C
84. Railway tracks are banked on curves
(A) necessary centrifugal force may be obtained from the horizontal component weight of the train
(B) to avoid frictional force between the tracks and wheels
(C) necessary centripetal force may be obtained from the horizontal component of the weight of the train
(D) the train may not fly off in the opposite direction
Answer: C
85. A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is:
(A) 90 cm
(B) 10 cm
(C) 1 m
(D) 1.1 cm
Answer: B
86. Wrought iron contains carbon upto
(A) 0.25%
(B) 1.0%
(C) 1.5%
(D) 2%
Answer: A
87. An R.C.C column is treated as long if its slenderness ratio is greater than
(A) 30
(B) 35
(C) 40
(D) 50
Answer: D
88. The first woman in space was
(A) Valentina Tereshkova
(B) Sally Ride
(C) Naidia Comenci
(D) Tamara Press
Answer: A
89.National Archives is located at?
(A) Calcutta
(B) Dehradun
(C) Bombay
(D) New Delhi
Answer: D
90. The most electronegative element among the following is
(A) sodium
(B) bromine
(C) fluorine
(D) oxygen
Answer: C
91. The Himalayan mountain system belongs to which of the following?
(A) Volcanic mountains
(B) Residual mountains
(C) Block mountains
(D) Fold mountains
Answer: D
92. The neutral axis of the cross-section a beam is that axis at which the bending stress is
(A) zero
(B) minimum
(C) maximum
(D) infinity
Answer: A
93. A steel bar of 5 mm is heated from 15° C to 40° C and it is free to expand. The bar will induce
(A) no stress
(B) shear stress
(C) tensile stress
(D) compressive stress
Answer: A
94. The output will be a LOW for any case when one or more inputs are zero in a(n):
(A) OR gate
(B) NOT gate
(C) AND gate
(D) NAND gate
Answer: C
95. A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq. m, is:
(A) Rs. 456
(B) Rs. 458
(C) Rs. 558
(D) Rs. 568
Answer: C
96. A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man's speed against the current is:
(A) 8.5 km/hr
(B) 9 km/hr
(C) 10 km/hr
(D) 12.5 km/hr
Answer: C
97. The greatest number of four digits which is divisible by 15, 25, 40 and 75 is:
(A) 9000
(B) 9400
(C) 9600
(D) 9800
Answer: C
98.The angle of elevation of a ladder leaning against a wall is 60 deg. and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is:
(A) 2.3 m
(B) 4.6 m
(C) 7.8 m
(D) 9.2 m
Answer: D
99. The largest 4 digit number exactly divisible by 88 is:
(A) 9944
(B) 9768
(C) 9988
(D) 8888
Answer: A
100. A number when divided by 296 leaves 75 as remainder. When the same number is divided by 37, the remainder will be:
(A) 1
(B) 2
(C) 8
(D) 11
Answer: A
101. The last Mahakumbh of the 20th century was held at
(A) Nasik
(B) Ujjain
(C) Allahabad
(D) Haridwar
Answer : D
102. 'Nature never did betray the heart that loved her' is a quotation from
(A) W.Wordsworth
(B) J.Brayon
(C) P.B.Shelly
(D) J.Keats
Answer: A
103. Programs designed to perform specific tasks is called known as
(A) System software
(B) Application software
(C) Utility programs
(D) Operating system
Answer: B
104. Mercury is commonly used as a thermometric fluid rather than water because
(A) specific heat of mercury is less than water
(B) specific heat of mercury is more than water
(C) mercury has greater visibility than water
(D) density of mercury is more than the water
Answer: A
105: The absorption of ink by blotting paper involves
(A) viscosity of ink
(B) capillary action phenomenon
(C) diffusion of ink through the blotting
(D) siphon action
Answer: B
106. The liquid limit and plastic limit exist in
(A) sandy soils
(B) silty soils
(C) gravel soils
(D) clay soils.
Answer: D
107. Yard is to inch as quart is to
(A) gallon
(B) ounce
(C) milk
(D) liquid
Answer: B
108: JAK, KBL, LCM, MDN, _____
(A) OEP
(B) NEO
(C) MEN
(D) PFQ
Answer: B
109. A circle will appear on an isometric drawing as a(n) __________ .
(A) ellipse
(B) cycloid
( C) circle
( D) parabola
Answer: A
110. Which type of output device creates images which look and feel like photographs?
( A) Electrostatic plotter
(B) Laser printer
(C) Dye-sublimation printer
(D) Inkjet plotter
Answer: C
111. All of the following are variables involved in the use of image planes, except:
(A) the object being viewed
(B) the size of the object
(C) the eye of the viewer
(D) the image plane
Answer: B
112. Which of the following object gives a circular section, when it is cut completely by a section plane (irrespective of the angle of the section plane)
(A) Cylinder
(B) Sphere
(C) Cone
(D) Circular lamina
Answer: B
113. The OR, XOR & AND functions can be performed by _____ of the computer in a CPU.
(A) ALU
(B) CU
(C) Memory
(D) Register
Answer: A
114. The treaty of Srirangapatna was signed between Tipu Sultan and
(A) Robert Clive
(B) Cornwallis
(C) Dalhousie
(D) Warren Hastings
Answer: B
115. 'Madhubani', a style of folk paintings, is popular in which of the following states in India?
(A) Uttar Pradesh
(B) Rajasthan
(C) Madhya Pradesh
(D) Bihar
Answer: D
116. The working language(s) of the UNESCO is/are
(A) French only
(B) English only
(C) English and French
(D) English, French and Russian
Answer: C
117. If log 27 = 1.431, then the value of log 9 is:
(A) 0.934
(B) 0.945
(C) 0.954
(D) 0.958
Answer : C
118. If 0.75 : x :: 5 : 8, then x is equal to:
(A) 1.12
(B) 1.2
(C) 1.25
(D) 1.30
Answer: B
119. The population of a town increased from 1,75,000 to 2,62,500 in a decade. The average percent increase of population per year is:
(A) 4.37%
(B) 5%
(C) 6%
(D) 8.75%
Answer: B
120: The method that cannot be used for removing permanent hardness of water is
(A) adding sodium carbonate
(B) distillation
(C) adding caustic soda
(D) boiling
Answer: D
121. The most electropositive elements among the following is
(A) Na
(B) Ca
(C) K
(D) Cs
Answer: D
122. Natural radioactivity was discovered by
(A) Marie Curie
(B) Ernest Rutherfor
(C) Henri Becquerel
(D) Enrico Fermi
Answer: C
123. RADAR is used for
(A) locating submerged submarines
(B) receiving a signals in a radio receiver
(C) locating geostationary satellites
(D) detecting and locating the position of objects such as aeroplanes
Answer: D
124. Moist curing of the exposed surfaces of concrete is done at least for
(A) 3 days
(B) 5 days
(C) 7 days
(D) 14 days
Answer : C
125. A style in which a writer makes a display of his knowledge
(A) Pedantic
(B) Verbose
(C) Pompous
(D) Ornate
Answer : A
126. Which women’s safety app has been launched by Indian Railways, recently?
(A)R-Sahayak
(B)R-Jagruk
(C)R-Mitra
(D)R-Sahyog
Answer: C
127. The unit of flux density is known as
(A) magnetomotive force
(B) a weber
(C) a maxwell
(D) a tesla
Answer: D
128. In a class B push-pull amplifier, the transistors are biased slightly above cutoff to avoid
(A) crossover distortion
(B) unusually high efficiency
(C) negative feedback
(D) a low input impedance
Answer: A
129. A single-phase induction motor
(A) is self-starting
(B) operates at a fixed speed
(C) is less reliable than a three-phase synchronous motor
(D) none of the above
Answer: D
130. Which semiconductor material is made from coal ash?
(A) germanium
(B) silicon
(C) tin
(D) carbon
Answer: A
131. The ratio of strengths of solid to hollow shafts, both having outside diameter D and hollow having inside diameter D/2, in torsion, is
(A) 1/4
(B) 1/2
(C) 1/16
(D) 15/16
Answer: D
132. In a loaded beam, the point of contraflexture occurs at a section where
(A) bending moment is minimum
(B) bending moment is zero or changes sign
(C) bending moment is maximum
(D) shearing force is maximum
Answer: B
133. The temperature at which the new grains are formed in the metal is called
(A) lower critical temperature
(B) upper critical temperature
(C) eutectic temperature
(D) recrystallisation temperature
Answer: D
134. The operation of cutting of a flat sheet to the desired shape is called
(A) shearing
(B) piercing
(C) punching
(D) blanking
Answer: D
135. The subcooling in a refrigeration cycle
(A) does not alter C.O.P.
(B) increases C.O.P.
(C) decreases C.O.P.
(D) none of these
Answer: B
136. 8 liters are drawn from a cask full of wine and is then filled with water. This operation is performed three more times. The ratio of the quantity of wine now left in cask to that of water is 16 : 65. How much wine did the cask hold originally?
(A) 18 liters
(B) 24 liters
(C) 32 liters
(D) 42 liters
Answer: B
137. A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. The percentage of decrease in area is:
(A) 10%
(B) 10.08%
(C) 20%
(D) 28%
Answer: D
138. In a 500 m race, the ratio of the speeds of two contestants A and B is 3 : 4. A has a start of 140 m. Then, A wins by:
(A) 60 m
(B) 40 m
(C) 20 m
(D) 10 m
Answer: C
139. The material which can be deformed permanently by heat and pressure is called a
(A) thermoplastic
(B) thermoset
(C) chemical compound
(D) polymer
Answer: B
140. What is the alternative name for a diskette?
(A) Floppy disk
(B) Hard disk
(C) Flexible disk
(D) Winchester disk
Answer: A
141. The first computer used to store a program
(A) EDSAC
(B) ENIAC
(C) EDVAC
(D) ACE
Answer: A
142. Which of the following has recently acquired Bengaluru-based HomeBuy360?
(A) Housing.com
(B) SoftBank
(C) Indian Real Estate Forum (IREF)
(D) None of the above
Answer: A
143. Nymph is the name of young one of
(A) butterfly
(B) beetle
(C) housefly
(D) cockroach
Answer: D
144. The oldest rocks in India are reported from
(A) Dharwar region, Karnataka
(B) Aravalli range, Rajasthan
(C) Vindhyan range, Madhya Pradesh
(D) Siwalik range, Punjab
Answer: A
145. After the first photons of light are produced, which process is responsible for amplification of the light?
(A) Blackbody radiation
(B) Stimulated emission
(C) Planck's radiation
(D) Einstein oscillation
Answer: B
146. Who is known as Bismarck of India?
(A) Mahatma Gandhi
(B) Vallabhai Pattel
(C) Nethaji Subash Chandra Bose
(D) Bhagath Singh
Answer: B
147. Bending of rail ends due to loose packing under a joint and loose fish Bolts, is known
(A) buckling
(B) hogging
(C) creeping
(D) none of these.
Answer: B
148. The hardness of steel increases if it contains
(A) pearlite
(B) ferrite
(C) cementite
(D) martensite
Answer: D
149. Pointing to a photograph of a boy Suresh said, "He is the son of the only son of my mother." How is Suresh related to that boy?
(A) Brother
(B) Uncle
(C) Cousin
(D) Father
Answer: D
150. Unit of kinematic viscosity is
(A) m2/sec
(B) Newton sec/m2
(C) Newton sec/m3
(D) Kg sec/m2.
Answer: A
This free mock test question paper is from the rrb official sites and answer keys are prepared by Exam Shouters members. Thanks to all and have a good luck for your rrb examinations 2015.
