MCQOPTIONS
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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. |
Which furnace consumes maximum refractory annually in an integrated steel plant? |
| A. | Soaking pit |
| B. | Blastfurnace |
| C. | L.D. converter |
| D. | Coke ovens |
| Answer» D. Coke ovens | |
| 2. |
Highest melting (m.p = 3070°C) oxide refractory is# |
| A. | Alumina |
| B. | Thoria |
| C. | Zirconia |
| D. | Magnesia |
| Answer» C. Zirconia | |
| 3. |
Which one expands on heating? |
| A. | Silica bricks |
| B. | Fireclay bricks |
| C. | Both A & B |
| D. | Neither A nor B |
| Answer» B. Fireclay bricks | |
| 4. |
Firing temperature of magnesite bricks is about __________ °C.# |
| A. | 800-1000 |
| B. | 1000-1200 |
| C. | 1600-1800 |
| D. | 2400-2600 |
| Answer» D. 2400-2600 | |
| 5. |
Which is a neutral refractory? |
| A. | Graphite |
| B. | Magnesite chrome |
| C. | Silica |
| D. | Magnesia |
| Answer» B. Magnesite chrome | |
| 6. |
Pyrometric cone equivalent (PCE) value (Segar cone) of 'superduty refractories' is more than 33 which corresponds to a temperature of __________ °C.# |
| A. | 1520 |
| B. | 1630 |
| C. | 1670 |
| D. | 1730 |
| Answer» E. | |
| 7. |
Which of the following is not a neutral refractory? |
| A. | Silicon carbide |
| B. | Magnesite |
| C. | Chromite |
| D. | Graphite |
| Answer» C. Chromite | |
| 8. |
Hot blast main (carrying air at 1000°C) in blast furnace are lined with __________ bricks.# |
| A. | Silica |
| B. | Fireclay |
| C. | Magnesite |
| D. | Zirconia |
| Answer» C. Magnesite | |
| 9. |
Cold crushing strength of ordinary fireclay brick is about 950 kg/cm² . On exposure to a temperature of about 1500°C, its crushing strength may come down to as low as __________ kg/cm² .# |
| A. | 450 |
| B. | 250 |
| C. | 150 |
| D. | 65 |
| Answer» E. | |