MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is not used as binders for mould materials? |
| A. | Bentonite |
| B. | Kaolinite |
| C. | Backelite |
| D. | Illite |
| Answer» D. Illite | |
| 2. |
Which of the following percent of carbon is correct for Eutectoid steel (at 723oC in Fe3-C diag)? |
| A. | 0.05% |
| B. | 0.5% |
| C. | 0.6% |
| D. | 0.8% |
| Answer» E. | |
| 3. |
A form of cast iron in which free carbon is present in the form of nodules in the matrix of cementite and ferrite. This form of cast iron is ____________ |
| A. | Malleable iron |
| B. | Pig iron |
| C. | Wrought iron |
| D. | None of these |
| Answer» B. Pig iron | |
| 4. |
A_FORM_OF_CAST_IRON_IN_WHICH_FREE_CARBON_IS_PRESENT_IN_THE_FORM_OF_NODULES_IN_THE_MATRIX_OF_CEMENTITE_AND_FERRITE._THIS_FORM_OF_CAST_IRON_IS:?$ |
| A. | Malleable iron |
| B. | Pig iron |
| C. | Wrought iron |
| D. | None of these |
| Answer» B. Pig iron | |
| 5. |
Which of the following is not used as binders for mould materials?$ |
| A. | Bentonite |
| B. | Kaolinite |
| C. | Backelite |
| D. | Illite |
| Answer» D. Illite | |
| 6. |
Which_of_the_following_percent_of_carbon_is_correct_for_Eutectoid_steel_(at_723oC_in_Fe3-C_diag)?$ |
| A. | 0.05% |
| B. | 0.5% |
| C. | 0.6% |
| D. | 0.8% |
| Answer» E. | |
| 7. |
The famous iron pillar located near Qutab Minar in New Delhi is made up of which material? |
| A. | Stainless steel |
| B. | Malleable iron |
| C. | Mild steel |
| D. | Wrought iron |
| Answer» C. Mild steel | |
| 8. |
Nitriding process is used to increase surface hardness for which of the following materials? |
| A. | Alloy steels |
| B. | Low carbon steels |
| C. | Medium carbon steels |
| D. | High carbon steels |
| Answer» B. Low carbon steels | |
| 9. |
Which of the following is not used as an additive? |
| A. | Dextrin |
| B. | Coal dust |
| C. | Pitch |
| D. | Zinc |
| Answer» E. | |
| 10. |
Which of the following is a perfect composition for medium carbon steel? |
| A. | Upto 0.3% |
| B. | 0.3-0.6% |
| C. | 0.6-1.7% |
| D. | 1.7-3% |
| Answer» C. 0.6-1.7% | |
| 11. |
Phosphorus is added to steel mold for which of the following reason? |
| A. | It increases strength and hardness of steel |
| B. | It increases refractoriness of steel |
| C. | It increases porosity of steel |
| D. | It increases finishing of steel |
| Answer» B. It increases refractoriness of steel | |
| 12. |
Which of the following material is not used for mold making? |
| A. | Iron |
| B. | Zinc |
| C. | Mild steel |
| D. | Alloy steel |
| Answer» C. Mild steel | |
| 13. |
Which of the following is a perfect composition of clay (Bentonite) used in moulding sand? |
| A. | Al<sub>2</sub>O<sub>3</sub> |
| B. | Al<sub>2</sub>O<sub>3</sub>.2SiO<sub>2</sub> |
| C. | Al<sub>2</sub>O<sub>3</sub>.2H<sub>2</sub>O |
| D. | Al<sub>2</sub>O<sub>3</sub>.2SiO<sub>2</sub>.2H<sub>2</sub>O |
| Answer» E. | |
| 14. |
High refractoriness of a material refers to its __________ |
| A. | Slipperyness of the material |
| B. | Chemical strength towards other material |
| C. | Strength to withstand at high temperature |
| D. | Ability to get dissolved in molten metal |
| Answer» D. Ability to get dissolved in molten metal | |
| 15. |
Which of the following non-metallic material is not used in the synthesis of molds? |
| A. | Magnesite |
| B. | Silimanite |
| C. | Zircon |
| D. | Valcanised rubber |
| Answer» E. | |
| 16. |
Which of the following group of material type is used in mold making? |
| A. | Metallic only |
| B. | Non-Metallic only |
| C. | Both metallic as well as non-metallic |
| D. | Neither metallic nor non-metallic |
| Answer» D. Neither metallic nor non-metallic | |
| 17. |
Which of the following properties must a material possess to be used in mold making? |
| A. | High refractoriness |
| B. | Chemical and thermal stability |
| C. | High permeability |
| D. | All of the mentioned |
| Answer» E. | |