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MCQOPTIONS
This section includes 2670 Mcqs, each offering curated multiple-choice questions to sharpen your Railways knowledge and support exam preparation. Choose a topic below to get started.
| 1051. |
Which one of the following processes consists of central sprue to feel metal into the cavities through a number of radial gates? |
| A. | Centrifuging |
| B. | Semi-centrifugal casting |
| C. | True centrifugal casting |
| D. | Precision casting |
| Answer» D. Precision casting | |
| 1052. |
Which of the following are the characteristics of the injection moulding of plastics? It is the most economical method of mass producing 1. a single item. 2. In most cases finished products are obtained. 3. There is lot of waste of thermoplastic since the 4. Runners and sprues cannot be reused. Select the correct answer by using the following codes: |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | 1 and 3 |
| D. | 1, 2 and 3 |
| Answer» B. 2 and 3 | |
| 1053. |
Which one of the following gating systems is best suited to obtain directional solidification? |
| A. | Top grating |
| B. | part-time grating |
| C. | Bottom grating |
| D. | stepped grating |
| Answer» C. Bottom grating | |
| 1054. |
Match List-I (Moulding process) with List-II (Binding agent) and select the correct answer using the codes given below the lists: List-I List-II A. Green sand 1. Silicate B. Core sand 2. Organic C. Shell moulding 3. Clay D. \[C{{O}_{2}}\]process 4. Plaster of Paris 5. Plastic Codes: |
| A. | A\[\to \]3, B\[\to \]2, C\[\to \]5, D\[\to \]1 |
| B. | A\[\to \]3, B\[\to \]2, C\[\to \]4, D\[\to \]1 |
| C. | A\[\to \]2, B\[\to \]3, C\[\to \]5, D\[\to \]4 |
| D. | A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]5 |
| Answer» C. A\[\to \]2, B\[\to \]3, C\[\to \]5, D\[\to \]4 | |
| 1055. |
Consider the following quenching media: 1. Oil 2. Water 3. Water + NaOH 4. Brine The correct sequence of these media in order of increasing hardness of steel undergoing heat treatment is: |
| A. | 1, 3, 2, 4 |
| B. | 2, 1, 3, 4 |
| C. | 1, 2, 3, 4 |
| D. | 4, 3, 2, 1 |
| Answer» B. 2, 1, 3, 4 | |
| 1056. |
Which one of the following pairs of axis lengths (a, b, c) and interaxial angles \[(\alpha ,\,\beta ,\,\gamma )\] represents the tetragonal crystal system? |
| A. | \[a=b=c;\,\alpha =\beta =\gamma =90{}^\circ \] |
| B. | \[a=b\ne c;\,\alpha =\beta =\gamma =90{}^\circ \] |
| C. | \[a\ne b\ne c;\,\alpha =\beta =\gamma =90{}^\circ \] |
| D. | \[a=b=c;\,\alpha =\beta =\gamma \ne 90{}^\circ \] |
| Answer» C. \[a\ne b\ne c;\,\alpha =\beta =\gamma =90{}^\circ \] | |
| 1057. |
Nodular grey cast iron is obtained from the grey cast iron by adding a small amount of: |
| A. | Manganese |
| B. | Phosphorus |
| C. | Magnesium |
| D. | Chromium |
| Answer» D. Chromium | |
| 1058. |
The correct sequence of creep deformation in a creep curve in order of their elongation is: |
| A. | Steady state, transient, accelerated |
| B. | Transient, steady state, accelerated |
| C. | Transient, accelerated, steady state |
| D. | Accelerated, steady state, transient |
| Answer» B. Transient, steady state, accelerated | |
| 1059. |
Martensite is a super-saturated solution of carbon in: |
| A. | Alpha iron |
| B. | beta iron |
| C. | Gamma iron |
| D. | delta iron. |
| Answer» B. beta iron | |
| 1060. |
During packing solidification, one liquid: |
| A. | Combines with one solid to form a second new solid |
| B. | Solidifies into two different solids |
| C. | Forms one solid |
| D. | Forms one solid and another liquid. |
| Answer» C. Forms one solid | |
| 1061. |
Atomic packing factor (APF) in the case of copper crystal is: |
| A. | 0.52 |
| B. | 0.68 |
| C. | 0.74 |
| D. | 1.633 |
| Answer» D. 1.633 | |
| 1062. |
Addition of vanadium to steel results improvement of: |
| A. | Heat-treatability by quenching |
| B. | Hardenability |
| C. | Fatigue strength |
| D. | Resistance to oxidation at elevated temperature. |
| Answer» C. Fatigue strength | |
| 1063. |
Pearlite consists of: |
| A. | 6.67% C and 93.33% ferrite |
| B. | 12% Fe and 87% cementite |
| C. | 13% C and 87% ferrite |
| D. | 13% cementite and 87% ferrite. |
| Answer» E. | |
| 1064. |
Percentages of various alloying elements present in different steel materials are given below: 1. % W ; 4% Cr ; 1% V; 5% Co ; 0.7% C 2. 8% Mo; 4% Cr; 2% V; 6% W; 0.7% C 3. 27% Cr ; 3% Ni; 5% Mo ; 0.25% C 4. 18% Cr ; 8% Ni ; 0.15 C. Which of these relate to that of high speed steel? |
| A. | 1 and 3 |
| B. | 1 and 2 |
| C. | 2 and 3 |
| D. | 2 and 4 |
| Answer» C. 2 and 3 | |
| 1065. |
Cermets are: |
| A. | Metals for high temperature use with ceramic like properties |
| B. | Ceramics with metallic strength and luster |
| C. | Coated tool materials |
| D. | metal-ceramic composites. |
| Answer» B. Ceramics with metallic strength and luster | |
| 1066. |
Cast iron is used for machine beds because of its high: |
| A. | Tensile strength |
| B. | Endurance strength |
| C. | Damping capacity |
| D. | Compressive strength. |
| Answer» D. Compressive strength. | |
| 1067. |
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I (Material) List-II (Applications) A. Tungsten carbide 1. Abrasive wheels B. Silicon nitride 2. Heating elements C. Aluminium oxide 3. Pipes for conveying liquid metals D. Silicon carbide 4. Drawing dies Codes: |
| A. | A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 |
| B. | A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 |
| C. | A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 |
| D. | A\[\to \]4, B\[\to \]3, C\[\to \]1, D\[\to \]2 |
| Answer» E. | |
| 1068. |
Which of the following are the benefits inventory control? 1. Improvement in customers relationship. 2. Economy in purchasing 3. Elimination of the possibility of duplicate ordering. Select the correct answer using the code given below: |
| A. | 1, 2 and 3 |
| B. | 1 and 2 only |
| C. | 2 and 3 only |
| D. | 1 and 3 only |
| Answer» D. 1 and 3 only | |
| 1069. |
Gibb's phase rule is given by (F = number of degrees of freedom, C = number of components, P = number of phases): |
| A. | \[F=C+P\] |
| B. | \[F=C+P\,-\,2\] |
| C. | \[F=C\,-\,P\,-\,2\] |
| D. | \[F=C\,-\,P+2\] |
| Answer» E. | |
| 1070. |
Consider the following pairs of plastics and their distinct characteristics: 1. Acrylics very good transparency to light 2. Polycarbonate poor impact resistance. 3. PTEF low coefficient of friction. 4. Polypropylene excellent fatigue strength- Which of these statements are correct? |
| A. | 2 and 3 |
| B. | 1 and 3 |
| C. | 1 and 4 |
| D. | 2 and 4. |
| Answer» D. 2 and 4. | |
| 1071. |
Match List-I (Crystal structure) with List-II (atomic packing factor) and select the correct answer using the codes given below the lists: List-I List-II A. Simple cubic 1. 94% B. Body-centred cubic 2. 74% C. Face-centred cubic 3. 52% D. Hexagonal close packed 4. 68% Codes: |
| A. | A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 |
| B. | A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 |
| C. | A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 |
| D. | A\[\to \]4, B\[\to \]3, C\[\to \]1, D\[\to \]2 |
| Answer» B. A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 | |
| 1072. |
Consider the following statements: The strength the fibre reinforced plastic product 1. Depends upon the strength of the fibre alone 2. Depends upon the fibre and plastic 3. Is isotropic 4. Is anisotropic. Which of these statements are correct? |
| A. | 1 and 3 |
| B. | 1 and 4 |
| C. | 2 and 3 |
| D. | 2 and 4 |
| Answer» E. | |
| 1073. |
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I (Material) List-II (Structure) A. Charcoal 1. I. F.C.C. B. Graphite 2. H.C.P. C. Chromium 3. Amorphous D. Copper 4. B.CC. Codes: |
| A. | A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]4 |
| B. | A\[\to \]3, B\[\to \]2, C\[\to \]4, D\[\to \]1 |
| C. | A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 |
| D. | A\[\to \]2, B\[\to \]3, C\[\to \]1, D\[\to \]4 |
| Answer» D. A\[\to \]2, B\[\to \]3, C\[\to \]1, D\[\to \]4 | |
| 1074. |
Which one or the following is correct? In the basis EOQ model, if lead time increases from 5 to 10 days, the EOQ will: |
| A. | Double |
| B. | Decrease by a factor of two |
| C. | Remain the same |
| D. | The data is insufficient to find EOQ. |
| Answer» D. The data is insufficient to find EOQ. | |
| 1075. |
Match List-I (Alloys) with List-II (Applications) and select the correct answer using the codes given below the lists: List-I List-II A. Chromal 1. Journal bearing B. Babbit alloy 2. Milling cutter C. Nimonic alloy 3. Thermocouple wire D. High speed steel 4. Gas turbine blades Codes: |
| A. | A\[\to \]3, B\[\to \]1, C\[\to \]4, D\[\to \]2 |
| B. | A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 |
| C. | A\[\to \]2, B\[\to \]4, C\[\to \]1, D\[\to \]3 |
| D. | A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 |
| Answer» B. A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 | |
| 1076. |
In the basic EOQ model, if demand is 60 per month ordering costing Rs.12 per order holding cost is Rs.1 per unit per month what is the EOQ? |
| A. | 12 |
| B. | 144 |
| C. | 24 |
| D. | 28 |
| Answer» B. 144 | |
| 1077. |
Match List-I (Alloying element in steel) with List-II (Property conferred or steel by the element) and select the correct answer using below the lists: List-I List-II A. Nickel 1. Corrosion resistance B. Chromium 2. Magnetic permeability C. Tungsten 3. Heat resistance D. Silicon 4. Hardenabiliry Codes: |
| A. | A\[\to \]4, B\[\to \]1, C\[\to \]3, D\[\to \]2 |
| B. | A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 |
| C. | A\[\to \]1, B\[\to \]4, C\[\to \]3, D\[\to \]2 |
| D. | A\[\to \]1, B\[\to \]4, C\[\to \]2, D\[\to \]3 |
| Answer» B. A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 | |
| 1078. |
Which of the following properties of a solid are dependent on crystal imperfections? 1. Yield stress 2. Melting point 3. Semi conductivity 4. Ductility Select the correct answer using the codes given below: |
| A. | 1 and 3 |
| B. | 1, 3 and 4 |
| C. | 2, 3 and 4 |
| D. | 2 and 4 |
| Answer» C. 2, 3 and 4 | |
| 1079. |
Which one of the following refractory materials is recommended for steel furnaces containing CaO stages? |
| A. | Alumina |
| B. | Silica |
| C. | Magnesia |
| D. | Fireclay |
| Answer» C. Magnesia | |
| 1080. |
Which one of the following materials is used for car types as a standard material? |
| A. | Styrene-butadiene rubber (SBR) |
| B. | Butyl rubber |
| C. | Nitrile rubber |
| D. | Any one of the above depending upon the need |
| Answer» B. Butyl rubber | |
| 1081. |
Match List-I with List-II and select the correct answer using the codes are given below the lists: List-I List-II A. Neoprene 1. Electric switches B. Bakelite 2. Adhesive C. Foamed polyurethane 3. Thermal insulator D. Araldite 4. Oil seal Codes: |
| A. | A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 |
| B. | A\[\to \]1, B\[\to \]4, C\[\to \]2, D\[\to \]3 |
| C. | A\[\to \]4, B\[\to \]1, C\[\to \]3, D\[\to \]2 |
| D. | A\[\to \]1, B\[\to \]4, C\[\to \]3, D\[\to \]2 |
| Answer» D. A\[\to \]1, B\[\to \]4, C\[\to \]3, D\[\to \]2 | |
| 1082. |
In metals subjected to cold working, strain hardening effect is due to: |
| A. | Slip mechanism |
| B. | Twining mechanism |
| C. | Dislocation mechanism |
| D. | Fracture mechanism. |
| Answer» B. Twining mechanism | |
| 1083. |
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I List-II A Toughness 1. Moment area methode B. Endurance strength 2. Hardness C. Resistance to abrasion 3. Energy absorbed before fracture in a tension test D. Deflection in beam 4. Fatigue loading Codes: |
| A. | A\[\to \]4, B\[\to \]3, C\[\to \]1, D\[\to \]2 |
| B. | A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 |
| C. | A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 |
| D. | A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 |
| Answer» D. A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 | |
| 1084. |
A given steel test specimen is studied under metallurgical microscope, magnification used is 100 X. In that different phases are observed. One of them is \[F{{e}_{3}}C.\] The observed phase \[F{{e}_{3}}C\] is also known as: |
| A. | Ferrite |
| B. | cementite |
| C. | Austenite |
| D. | martensite |
| Answer» C. Austenite | |
| 1085. |
Guideways of lathe beds are hardened by |
| A. | Carburizing |
| B. | Cyaniding |
| C. | nitriding |
| D. | Flame hardening. |
| Answer» E. | |
| 1086. |
The highest stress that a material can withstand for a specified length of time without excessive deformation is called: |
| A. | Fatigue strength |
| B. | Endurance strength |
| C. | Creep strength |
| D. | Creep rupture strength |
| Answer» D. Creep rupture strength | |
| 1087. |
Consider the following statements: Fibre reinforced plastics are 1. Made of thermosetting resins and glass fibre. 2. Made of thermoplastic resins and glass fibre. 3. Anisotropic. 4. Isotropic. Of these statements: |
| A. | 1 and 4 are correct |
| B. | 1 and 3 are correct |
| C. | 2 and 3 are correct |
| D. | 2 and 4 are correct |
| Answer» C. 2 and 3 are correct | |
| 1088. |
Match List-I with List-II and select the correct answer List-I List-II (Nature of product) A. Polyethylene 1. Adhesive B. Polyurethane 2. Film C. Cyano-acrylate 3. Wire D. Nylon 4. Foam Codes: |
| A. | A\[\to \]2, B\[\to \]4, C\[\to \]3, D\[\to \]1 |
| B. | A\[\to \]4, B\[\to \]2, C\[\to \]3, D\[\to \]1 |
| C. | A\[\to \]2, B\[\to \]4, C\[\to \]1, D\[\to \]3 |
| D. | A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 |
| Answer» D. A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 | |
| 1089. |
Consider the following statements: Thermosetting plastics are 1. Formed by addition polymerisation. 2. Formed by condensation polymerisation. 3. Softened on heating and hardened on cooling for any number of times. 4. Moulded by heating and cooling. Of these statements: |
| A. | 1 and 3 are correct |
| B. | 2 and 4 are correct |
| C. | 1 and 4 are correct |
| D. | 3 and 4 are correct. |
| Answer» C. 1 and 4 are correct | |
| 1090. |
Alloy steel which is work hardenable and which is used to make the blades of bulldozers, bucket wheel excavators and other earth moving equipment contain iron, carbon and: |
| A. | Chromium |
| B. | silicon |
| C. | Manganese |
| D. | magnesium. |
| Answer» D. magnesium. | |
| 1091. |
Tin base white metals are used were the bearings are subjected to: |
| A. | Large surface wear |
| B. | Elevated temperatures |
| C. | Light load and pressure |
| D. | High pressure and load. |
| Answer» E. | |
| 1092. |
18/8 stainless steel contains: |
| A. | 18%, stainless, 8% chromium |
| B. | 18% chromium, 8% nickel |
| C. | 18% tungsten, 8% nickel |
| D. | 18% tungsten, 8% chromium |
| Answer» C. 18% tungsten, 8% nickel | |
| 1093. |
Machine tool guideways are usually hardened by: |
| A. | Vacuum hardening |
| B. | Martempering |
| C. | Induction hardening |
| D. | Name hardening. |
| Answer» E. | |
| 1094. |
Which of the following pairs regarding the effect of alloying elements in steel are correctly matched? 1. Molybdenum: Forms abrasion resisting particles. 2. Phosphorus: Improves machinability in free cutting steels. 3. Cobalt: Contributes to red hardness by hardening ferrite. 4. Silicon: Reduces oxidation resistance. Select the correct answer using the codes given below: |
| A. | 2, 3 and 4 |
| B. | 1, 3 and 4 |
| C. | 1, 2 and 4 |
| D. | 1, 2 and 3 |
| Answer» B. 1, 3 and 4 | |
| 1095. |
Consider the following statements: When a metal or alloy is cold worked: (1) It is worked below room temperature. (2) It is worked below recrystallization temperature. (3) Its hardness and strength increase. (4) Its hardness increases but strength does Of these statements: |
| A. | 1 and 4 are correct |
| B. | 1 and 3 are correct |
| C. | 2 and 3 are correct |
| D. | 2 and 4 are correct. |
| Answer» D. 2 and 4 are correct. | |
| 1096. |
Which one of the following materials will require the largest size of riser for the same casting? |
| A. | Aluminum |
| B. | Cast iron |
| C. | Steel |
| D. | Copper. |
| Answer» C. Steel | |
| 1097. |
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I (Alloy) List-II (Use) A. Low carbon steel 1. Bearing B. Hadfield mangenese steel 2. Thermocouple C. Constantan 3. Wire nails D. Babbit alloy 4. Bulldozer blades Codes: |
| A. | A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 |
| B. | A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 |
| C. | A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]4 |
| D. | A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 |
| Answer» E. | |
| 1098. |
Match the following: List-I (Alloying element in steel) List-II (Effect) A. Lead 1. Restricts grain growth B. Aluminium 2. Raises yield point C. Copper 3. Reduces strength to impact D. Phosphorus 4. Free machining Codes: |
| A. | A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 |
| B. | A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 |
| C. | A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]2 |
| D. | A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 |
| Answer» E. | |
| 1099. |
In case carburizing carbon is introduced to form a high carbon layer at the surface. The carbon is introduce in the form of: |
| A. | Graphite flakes |
| B. | pearlite |
| C. | Cementite |
| D. | free carbon |
| Answer» E. | |
| 1100. |
Match List-I with List-II and select the correct answer using the codes give below the lists: List-I (Name of material) List-II (% carbon range) A. Hypo-eutectoid steel 1. \[4.3\,\,-\,\,5.67\] B. Hyper-eutectoid steel 2. \[2.0\,\,-\,\,4.3\] C. Hypo-eutectic cast iron 3. \[0.8\,\,-\,\,2.0\] D. Hyper-eutectic cast iron 4. \[0.008\,\,-\,\,0.8\] Codes: |
| A. | A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 |
| B. | A\[\to \]1, B\[\to \]3, C\[\to \]2, D\[\to \]4 |
| C. | A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 |
| D. | A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 |
| Answer» B. A\[\to \]1, B\[\to \]3, C\[\to \]2, D\[\to \]4 | |