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. |
Ceramic materials are____________________? |
| A. | Organic in nature |
| B. | Stronger in compression than in tension |
| C. | Always amorphous in nature |
| D. | Always bad heat conductors |
| Answer» C. Always amorphous in nature | |
| 2. |
Centrifugal pump made of pyrex or glass can’t be used to pump___________________? |
| A. | Milk and fruit juices |
| B. | Alkaline solutions |
| C. | Dilute H2SO4 at room temperature |
| D. | Brine |
| Answer» C. Dilute H2SO4 at room temperature | |
| 3. |
Cementite is________________? |
| A. | Fe3C chemically |
| B. | A compound of carbon and iron |
| C. | Characterised by an orthorhombic crystal structure |
| D. | All A., B. and C. |
| Answer» E. | |
| 4. |
Caustic soda is transported in _____________ lined containers ? |
| A. | Glass |
| B. | Nickel |
| C. | Neoprene |
| D. | Either B. or C. |
| Answer» E. | |
| 5. |
Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and_________________? |
| A. | Moving mercury and graphite |
| B. | Graphite and moving mercury |
| C. | Moving mercury and carbon |
| D. | Moving mercury and crimped steel wire |
| Answer» C. Moving mercury and carbon | |
| 6. |
Caustic soda can be stored in _____________ drums? |
| A. | Steel |
| B. | Cast iron |
| C. | Brass |
| D. | Gun metal |
| Answer» B. Cast iron | |
| 7. |
Cast iron is__________________? |
| A. | Used for making shock resisting parts |
| B. | Manufactured in cupola and is brittle |
| C. | Having compressive strength more than its tensile strength |
| D. | All A., B. & C. |
| Answer» E. | |
| 8. |
Cast irons are generally specified by their_________________? |
| A. | Carbon content |
| B. | Tensile strength |
| C. | Hardness |
| D. | Manufacturing process |
| Answer» C. Hardness | |
| 9. |
Cast iron vessels are not suitable for the storage of_________________? |
| A. | Freon |
| B. | H2SO4 (95%) at room temperature |
| C. | H2SO4 (fuming) |
| D. | Wet SO2 |
| Answer» E. | |
| 10. |
Cast iron is having very high ___________________? |
| A. | Proximity between its elastic limit and ultimate breaking strength |
| B. | Ductility |
| C. | Tensile strength |
| D. | All A., B. and C. |
| Answer» B. Ductility | |
| 11. |
Cast iron is a ______________ material? |
| A. | Brittle |
| B. | Ductile |
| C. | Tough |
| D. | Malleable |
| Answer» B. Ductile | |
| 12. |
Cast iron has____________________? |
| A. | High ductility |
| B. | High malleability |
| C. | Very high tensile strength |
| D. | Its elastic limit very close to ultimate breaking strength |
| Answer» E. | |
| 13. |
Cast iron has very high___________________? |
| A. | Compressive strength |
| B. | Ductility |
| C. | Shock resistance |
| D. | Resistance to brittleness |
| Answer» B. Ductility | |
| 14. |
Cast iron compared to steel is better in__________________? |
| A. | Ductility |
| B. | Fluidity & castability |
| C. | Strength |
| D. | Malleability |
| Answer» C. Strength | |
| 15. |
Cast iron and steel pipes are produced by ____________ casting? |
| A. | Die |
| B. | Investment |
| C. | Slush |
| D. | True centrifugal |
| Answer» E. | |
| 16. |
Carbon tetrachloride can be stored in a storage vessel made of________________? |
| A. | High silicon iron (14% Si) |
| B. | Tin |
| C. | Stainless steel |
| D. | All A., B. and C. |
| Answer» E. | |
| 17. |
Carbon supply in pack carburising process is in the form of_____________________? |
| A. | Charcoal |
| B. | Calcium carbide |
| C. | Hydrocarbon oil |
| D. | Graphite |
| Answer» B. Calcium carbide | |
| 18. |
Carbon percentage is the same in cast iron and_________________? |
| A. | Wrought iron |
| B. | Pig iron |
| C. | Mild steel |
| D. | High silicon (14%) iron |
| Answer» C. Mild steel | |
| 19. |
Carbon percentage in medium carbon steel is around__________________? |
| A. | 0.1 to 0.35 |
| B. | 0.35 to 0.5 |
| C. | 0.8 to 1.4 |
| D. | 1 to 1. 5 |
| Answer» C. 0.8 to 1.4 | |
| 20. |
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 | |
| 21. |
Carbon is present in steel wholly in the__________________? |
| A. | Combined form |
| B. | Free state as graphite |
| C. | Both A. and B. |
| D. | Neither A. nor B. |
| Answer» B. Free state as graphite | |
| 22. |
Carbon is present in the combined form (carbide) in case of______________________? |
| A. | Pig iron |
| B. | Steel |
| C. | Ferroalloys |
| D. | All A., B. & C. |
| Answer» E. | |
| 23. |
Carbon content in steel is ___________________ percent? |
| A. | 0.1-2 |
| B. | 4-6 |
| C. | 2-4 |
| D. | 0.001-0.01 |
| Answer» B. 4-6 | |
| 24. |
Carbon content in plain carbon steel is ______________ percent? |
| A. | 0.1 to 0.15 |
| B. | 0.35 to 0.45 |
| C. | 0.65 to 0.80 |
| D. | 0.85 to 1.2 |
| Answer» C. 0.65 to 0.80 | |
| 25. |
______________ can replace tungsten in high speed steel ? |
| A. | Chromium |
| B. | Vanadium |
| C. | Cobalt |
| D. | Molybdenum |
| Answer» E. | |
| 26. |
Bush bearings are made of______________________? |
| A. | Mild steel |
| B. | Phosphorous bronze |
| C. | White metal alloys |
| D. | None of these |
| Answer» C. White metal alloys | |
| 27. |
Bronze is an alloy of copper and _________________? |
| A. | Lead |
| B. | Tin |
| C. | Nickel |
| D. | Zinc |
| Answer» C. Nickel | |
| 28. |
Brinell Hardness Number (BHN) for talc is approximately in the range of____________________? |
| A. | 1-5 |
| B. | 20-30 |
| C. | 100 -150 |
| D. | 200 – 250 |
| Answer» C. 100 -150 | |
| 29. |
Brine solution is stored/treated in _______________ lined vessels/pipes? |
| A. | Rubber |
| B. | Lead |
| C. | Glass |
| D. | Nickel |
| Answer» E. | |
| 30. |
Brine (15% concentration) can be stored in a vessel made of____________________? |
| A. | Monel |
| B. | Karbate |
| C. | Cast iron |
| D. | None of these |
| Answer» B. Karbate | |
| 31. |
Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its ______________________? |
| A. | High co-efficient of thermal expansion |
| B. | Low thermal conductivity |
| C. | High corrosion resistance |
| D. | All A., B. and C. |
| Answer» D. All A., B. and C. | |
| 32. |
Brass is an alloy of____________________? |
| A. | Nickel and tin |
| B. | Copper and zinc |
| C. | Tin and lead |
| D. | Copper, nickel and zinc |
| Answer» C. Tin and lead | |
| 33. |
Brass container is suitable for storing__________________? |
| A. | Aqueous ammonia |
| B. | Beer |
| C. | H2SO4 (95%) |
| D. | Phosphoric acid (95%) |
| Answer» C. H2SO4 (95%) | |
| 34. |
Bog iron used for the adsorption of H2S from coke oven gas is___________________? |
| A. | An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide) |
| B. | Iron impregnated with resin (usually Bakelite) |
| C. | Carbon free iron |
| D. | None of these |
| Answer» B. Iron impregnated with resin (usually Bakelite) | |
| 35. |
Biological shield in a nuclear power reactor is made of________________? |
| A. | Concrete |
| B. | Steel |
| C. | Cadmium |
| D. | Zircaloy |
| Answer» B. Steel | |
| 36. |
Bell metal is an alloy of __________________? |
| A. | Copper & zinc |
| B. | Copper & tin |
| C. | Copper & nickel |
| D. | Zinc & tin |
| Answer» C. Copper & nickel | |
| 37. |
Beehive coke ovens are made of ________________ bricks? |
| A. | Silica |
| B. | Fireclay |
| C. | Silicon carbide |
| D. | Corundum |
| Answer» B. Fireclay | |
| 38. |
Bearings subjected to light load are made of________________? |
| A. | White metal |
| B. | Phosphorous bronze |
| C. | Monel |
| D. | Silicon bronze |
| Answer» C. Monel | |
| 39. |
Balls in a ball mill are usually made of__________________? |
| A. | Steel |
| B. | Cast iron |
| C. | Stainless steel |
| D. | Bronze |
| Answer» B. Cast iron | |
| 40. |
Ball bearings are normally made of _____________ steel? |
| A. | High speed |
| B. | High carbon |
| C. | Chrome |
| D. | Silicon |
| Answer» D. Silicon | |
| 41. |
Ball bearings are generally made of___________________? |
| A. | Plain carbon steel |
| B. | Chrome carbon steel |
| C. | Stainless steel |
| D. | Malleable cast iron |
| Answer» C. Stainless steel | |
| 42. |
Babbitt metals used for making bearings are _________________? |
| A. | Tin or lead based alloys |
| B. | Short of antifrictional properties |
| C. | Having homogenous microstructure |
| D. | Yellow metals |
| Answer» B. Short of antifrictional properties | |
| 43. |
Babbitt metal is not a___________________________? |
| A. | Tin base alloy |
| B. | White metal |
| C. | Lead base alloy |
| D. | Pure metal |
| Answer» E. | |
| 44. |
Babbitt metal used for making bearings should have_____________________? |
| A. | High co-efficient of friction between journal and bearing |
| B. | Ability to retain lubricant on its surface |
| C. | Low co-efficient of friction between journal and bearing |
| D. | Both B. & C. |
| Answer» B. Ability to retain lubricant on its surface | |
| 45. |
Babbitt metal (used for making bearings) comprises of__________________? |
| A. | Mainly tin (85%) and lead |
| B. | Saw dust and iron dust mixture |
| C. | Zinc and aluminium |
| D. | Copper and aluminium |
| Answer» B. Saw dust and iron dust mixture | |
| 46. |
Babbitt metal used for bearings is a ____________base alloy? |
| A. | Tin |
| B. | Lead |
| C. | Aluminium |
| D. | Copper |
| Answer» B. Lead | |
| 47. |
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. | |
| 48. |
Atmospheric corrosion of metals result from their________________? |
| A. | Slow oxidation |
| B. | Fast oxidation |
| C. | Fast hydration |
| D. | Slow dehydration |
| Answer» B. Fast oxidation | |
| 49. |
As the impurities are oxidised, the melting point of iron___________________? |
| A. | Decreases |
| B. | Remains unchanged |
| C. | Increases |
| D. | May increase or decrease; unpredictable |
| Answer» D. May increase or decrease; unpredictable | |
| 50. |
Aqueous nitric acid is stored in ______________ vessel? |
| A. | Plain carbon steel |
| B. | Stainless steel |
| C. | Cast iron |
| D. | Thermosetting plastic material |
| Answer» D. Thermosetting plastic material | |