MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
*/*_Materials having __________ lattice structure are usually most ductile.? |
| A. | F.c.c. |
| B. | B.c.c. |
| C. | H.c.p. |
| D. | Cubic |
| Answer» B. B.c.c. | |
| 2. |
*/*_A measure of toughness of a material is its? |
| A. | Percentage elongation |
| B. | Yield strength |
| C. | Ultimate strength |
| D. | Area under stress-strain diagram |
| Answer» C. Ultimate strength | |
| 3. |
*/*_Molybdenum steels containing 0.15 to 0.40% molybdenum? |
| A. | Are prone to temper brittleness |
| B. | Are used for automobile parts like gears, axle, shaft, bearings etc |
| C. | Have very poor fatigue resistance |
| D. | Do not contain nickel or chromium or both |
| Answer» C. Have very poor fatigue resistance | |
| 4. |
*/*_Carbon is present in the combined form (carbide) in case of? |
| A. | Pig iron |
| B. | Steel |
| C. | Ferroalloys |
| D. | All of the above |
| Answer» E. | |
| 5. |
*/*_Cast iron is a __________ material.? |
| A. | Brittle |
| B. | Ductile |
| C. | Tough |
| D. | Malleable |
| Answer» B. Ductile | |
| 6. |
*/*_Maximum consumption of zinc is in? |
| A. | Alloying |
| B. | Galvanising |
| C. | Utensil manufacture |
| D. | Electrical industry |
| Answer» C. Utensil manufacture | |
| 7. |
*/*_Purity of electrical grade aluminium should be ‚â• __________ percent.? |
| A. | 95 |
| B. | 99.5 |
| C. | 85 |
| D. | 90 |
| Answer» C. 85 | |
| 8. |
*/*_Dry chlorine can be handled in a vessel made of? |
| A. | Iron or steel |
| B. | PVC |
| C. | Ickel |
| D. | Brass |
| Answer» B. PVC | |
| 9. |
*/*_Ceramic materials? |
| A. | Are exemplified by clay and mica |
| B. | Are poor electrical conductors due to lack of free electrons |
| C. | Never exhibit polymorphism |
| D. | All of the above |
| Answer» E. | |
| 10. |
*/*_Ability of a material to __________ is indicated by its damping capacity.? |
| A. | Withstand compression |
| B. | Absorb vibration |
| C. | Absorb shock |
| D. | None of these |
| Answer» C. Absorb shock | |
| 11. |
*/*_Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making? |
| A. | Nuts |
| B. | Bolts |
| C. | Chiesels |
| D. | Studs |
| Answer» D. Studs | |
| 12. |
*/*_Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with? |
| A. | Acidic refractory |
| B. | Rubber |
| C. | Karbate |
| D. | Lead or acid-proof bricks |
| Answer» E. | |
| 13. |
*/*_The formation of oxide film on a metal due to atmospheric exposure reduces its? |
| A. | Toughness |
| B. | Stiffness |
| C. | Creep limit |
| D. | All of the above |
| Answer» D. All of the above | |
| 14. |
*/*_Mild steel is? |
| A. | A low carbon steel (0.05 to 0.3% carbon) |
| B. | Highly resistant to corrosion (as much as stainless steel) |
| C. | A high carbon steel (0.5 to 1.5% carbon) |
| D. | Very poor in strength & ductility |
| Answer» B. Highly resistant to corrosion (as much as stainless steel) | |
| 15. |
*/*_The fermentor used in the production of pencillin (by deep fermentation process) is made of? |
| A. | Glass |
| B. | Glass lined steel |
| C. | High silicon cast iron |
| D. | Procelain |
| Answer» C. High silicon cast iron | |
| 16. |
*/*___________ is used for examining the macro-structure of a material.? |
| A. | Metallurgical microscope |
| B. | Optical microscope |
| C. | X-rays |
| D. | Visual inspection by naked eye |
| Answer» E. | |
| 17. |
*/*_Which of the following is the easiest to bend?? |
| A. | Steel |
| B. | Stainless steel |
| C. | Cast iron |
| D. | Wrought iron |
| Answer» E. | |
| 18. |
*/*_Lead? |
| A. | Is the hardest metal in common use |
| B. | Is the lightest metal in common use |
| C. | Can not be scratched by finger nails |
| D. | Can not be work hardened |
| Answer» E. | |
| 19. |
*/*_Addition of 2% nickel in steel makes it suitable for making? |
| A. | Electronic valves |
| B. | Boiler plates, rivets etc |
| C. | Turbine blades |
| D. | Connecting rod |
| Answer» C. Turbine blades | |
| 20. |
*/*_The electrical conductivity of a __________ decreases with rise in temperature.? |
| A. | Metal/alloy |
| B. | Semi-conductor |
| C. | Dielectric |
| D. | None of these |
| Answer» B. Semi-conductor | |
| 21. |
*/*_Coke oven regenerators are made of __________ bricks.? |
| A. | Fire clay |
| B. | Silica |
| C. | Low thermal conductivity |
| D. | High electrical conductivity |
| Answer» B. Silica | |
| 22. |
*/*_The preferred material of construction for storage tanks for 98% sulphuric acid is? |
| A. | Aluminium |
| B. | Lead |
| C. | Stainless steel 316 |
| D. | Mild steel |
| Answer» C. Stainless steel 316 | |
| 23. |
*/*_18/8 steel is a/an __________ stainless steel.? |
| A. | Austenitic |
| B. | Ferritic |
| C. | Martensitic |
| D. | None of these |
| Answer» B. Ferritic | |
| 24. |
*/*_Which of the following is not an alloy of nickel and chromium?? |
| A. | Inconel |
| B. | Hastealloy |
| C. | Nimonic alloys |
| D. | Duralumin |
| Answer» E. | |
| 25. |
*/*_Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the? |
| A. | Ultimate tensile strength (U.T.S.) |
| B. | Endurance limit |
| C. | Elastic limit |
| D. | None of these |
| Answer» C. Elastic limit | |
| 26. |
*/*_Austenitic manganese steel used for making jaws of crushing machines contains about __________ percent manganese.? |
| A. | 1.5-2 |
| B. | 3.5-4.5 |
| C. | 7-9 |
| D. | 12-14 |
| Answer» E. | |
| 27. |
*/*_The process of heating the cold pressed metallic powder is called __________ in powder metallurgy.? |
| A. | Precipitation |
| B. | Fusion |
| C. | Sintering |
| D. | Agglomeration |
| Answer» D. Agglomeration | |
| 28. |
*/*_Polymerisation reactor used in the production of styrene butadiene rubber (SBR) is made of? |
| A. | Stainless steel or glass lined steel |
| B. | Nickel clad steel |
| C. | High silicon cast iron |
| D. | Aluminium |
| Answer» B. Nickel clad steel | |
| 29. |
*/*_Duriron is? |
| A. | Acid resistant, brittle and very hard |
| B. | High silicon iron |
| C. | Prone to breakage due to thermal expansion because of its very high co-efficient of thermal expansion |
| D. | All of the above |
| Answer» E. | |
| 30. |
*/*_Silicon percentage in acid resistant cast iron is about? |
| A. | 4 |
| B. | 8 |
| C. | 14 |
| D. | 20 |
| Answer» D. 20 | |
| 31. |
*/*_'Age hardening' of duralumin is due to? |
| A. | Copper |
| B. | Magnesium |
| C. | Both A & B |
| D. | Neither A nor B |
| Answer» D. Neither A nor B | |
| 32. |
*/*_German silver used for decorative purposes contains maximum percentage of? |
| A. | Silver |
| B. | Copper |
| C. | Zinc |
| D. | Nickel |
| Answer» C. Zinc | |
| 33. |
*/*_In the kraft (sulphate) process for the paper manufacture, the digestor is made of? |
| A. | Cast iron |
| B. | Stainless steel |
| C. | Karbate carbon |
| D. | Wrought iron |
| Answer» C. Karbate carbon | |
| 34. |
*/*_Biological shield in a nuclear power reactor is made of? |
| A. | Concrete |
| B. | Steel |
| C. | Cadmium |
| D. | Zircalloy |
| Answer» B. Steel | |
| 35. |
*/*_The most resistant material to alkaline corrosion is? |
| A. | Duriron |
| B. | Nickel |
| C. | Aluminium |
| D. | Karbate |
| Answer» C. Aluminium | |
| 36. |
*/*_Mercury is transported in metal containers made of? |
| A. | Aluminium |
| B. | Iron |
| C. | Lead |
| D. | Nickel |
| Answer» C. Lead | |
| 37. |
*/*_Carbon is present in the uncombined (graphitic) form in case of? |
| A. | Cast iron |
| B. | Steel |
| C. | Ferroalloy |
| D. | None of these |
| Answer» B. Steel | |
| 38. |
*/*_The purpose of nitriding the steel is to? |
| A. | Harden its surface |
| B. | Soften its surface |
| C. | Improve its reliability |
| D. | None of these |
| Answer» B. Soften its surface | |
| 39. |
*/*_Cast irons are generally specified by their? |
| A. | Carbon content |
| B. | Tensile strength |
| C. | Hardness |
| D. | Manufacturing proces |
| Answer» C. Hardness | |
| 40. |
*/*_H‚ÇÇSO‚ÇÑ (< 50% concentration) is corrosive to? |
| A. | Aluminium, mild steel, stainless steel, concrete & tin |
| B. | Copper, cast iron & high silicon iron (14% Si) |
| C. | Rubber (butyl and hard), silicone rubber & teflon |
| D. | Glass, graphite, porcelain & stoneware |
| Answer» B. Copper, cast iron & high silicon iron (14% Si) | |
| 41. |
*/*_Which of the following crystal structures characterises the ferritic stainless steel?? |
| A. | Face centred cubic |
| B. | Body centred cubic |
| C. | Simple hexagonal |
| D. | None of these |
| Answer» C. Simple hexagonal | |
| 42. |
*/*_A material no longer behaves elastically beyond? |
| A. | Plastic limit |
| B. | Limiting load |
| C. | Elastic limit |
| D. | Breaking load |
| Answer» D. Breaking load | |
| 43. |
*/*_Graphite is a good? |
| A. | Thermal & electrical insulator |
| B. | Conductor of heat |
| C. | Conductor of electricity |
| D. | Both B & C |
| Answer» E. | |
| 44. |
*/*_Which is the purest form of iron?? |
| A. | Wrought iron |
| B. | Pig iron |
| C. | Bessemer iron |
| D. | Grey iron |
| Answer» B. Pig iron | |
| 45. |
*/*_Hardened steel is softened by? |
| A. | Normalising |
| B. | Tempering |
| C. | Annealing |
| D. | Carburising |
| Answer» C. Annealing | |
| 46. |
*/*_Which of the following pairs of elements may form an alloy?? |
| A. | Iron & carbon |
| B. | Iron & mercury |
| C. | Platinum & mercury |
| D. | None of these |
| Answer» B. Iron & mercury | |
| 47. |
*/*_Presence of nickel in steel improves its? |
| A. | Corrosion resistance |
| B. | Cutting ability |
| C. | Wear resistance |
| D. | All of the above |
| Answer» B. Cutting ability | |
| 48. |
*/*_Which of the following is not a non-ferrous alloy?? |
| A. | Meehanite |
| B. | Magnalium |
| C. | Gun metal |
| D. | Muntz metal |
| Answer» B. Magnalium | |
| 49. |
*/*___________ iron is produced, when molten pig iron is allowed to cool gradually.? |
| A. | White cast |
| B. | Grey cast |
| C. | Wrought |
| D. | None of these |
| Answer» C. Wrought | |
| 50. |
*/*_Acetaldehyde is shipped in __________ drums.? |
| A. | Cast iron |
| B. | Steel |
| C. | Aluminium |
| D. | Either B & C |
| Answer» E. | |