MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Building Construction knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Buna-S, Neoprene and Butyl are different trade names of _________ |
| A. | Natural rubber |
| B. | Synthetic rubber |
| C. | Lubricants |
| D. | Animal oils |
| Answer» C. Lubricants | |
| 2. |
Which of the following oils is obtained from the seed of rape plant? |
| A. | Castor oil |
| B. | Colza oil |
| C. | Hazel-nut oil |
| D. | Olive oil |
| Answer» C. Hazel-nut oil | |
| 3. |
Which of the following oils are obtained by mixing mineral oils with animal or vegetable oils? |
| A. | Animal oils |
| B. | Mineral oils |
| C. | Greases |
| D. | Blended oils |
| Answer» E. | |
| 4. |
Which of the following oils is obtained by boiling fats and other parts of cattle with water? |
| A. | Lard oil |
| B. | Whale oil |
| C. | Neat s foot oil |
| D. | Tallow oil |
| Answer» D. Tallow oil | |
| 5. |
Which of the following statements about liquid lubricants is false? |
| A. | They should be greasy in nature |
| B. | Their melting point should be high |
| C. | Their boiling point should be high |
| D. | They should not contain any impurities |
| Answer» C. Their boiling point should be high | |
| 6. |
Which of the following is not a solid lubricant? |
| A. | Graphite |
| B. | Mica |
| C. | Grease |
| D. | Soapstone |
| Answer» D. Soapstone | |
| 7. |
The coefficient of heat conductivity of heat-insulating materials does not exceed _________ |
| A. | 0.18 kcal/m.hr. C |
| B. | 0.28 kcal/m.hr. C |
| C. | 0.38 kcal/m.hr. C |
| D. | 0.48 kcal/m.hr. C |
| Answer» B. 0.28 kcal/m.hr. C | |
| 8. |
Which of the following should be added to the plaster of Paris in order to increase its setting time? |
| A. | Alum |
| B. | Potassium sulphate |
| C. | Potassium nitrate |
| D. | Citric acid |
| Answer» E. | |
| 9. |
Plaster of Paris is __________ |
| A. | Double hydrate of aluminium sulphate |
| B. | Double hydrate of calcium sulphate |
| C. | Hemihydrate of calcium sulphate |
| D. | Hemihydrate of aluminium sulphate |
| Answer» D. Hemihydrate of aluminium sulphate | |
| 10. |
Which of the following statements about gypsum is not correct? |
| A. | The final setting time of gypsum is 30 minutes |
| B. | The solubility of gypsum in water is very poor |
| C. | Gypsum in insoluble in sulphuric acid |
| D. | Gypsum is insoluble in hydrochloric acid |
| Answer» E. | |
| 11. |
The percentage content of water and calcium sulphate in gypsum is _______ and _______ respectively. |
| A. | 20.9, 79.1 |
| B. | 15.4, 84.6 |
| C. | 30.7, 69.3 |
| D. | 55.3, 44.7 |
| Answer» B. 15.4, 84.6 | |
| 12. |
Which of the following is not a solid fuel? |
| A. | Petroleum |
| B. | Charcoal |
| C. | Coke |
| D. | Coal |
| Answer» B. Charcoal | |
| 13. |
Coal gas is obtained by thermal decomposition of coal in the presence of air at low temperature. |
| A. | True |
| B. | False |
| Answer» C. | |
| 14. |
Which of the following is not a property of a good electrical insulator? |
| A. | It has high electrical resistance |
| B. | It has a high dielectric strength |
| C. | It has a high dielectric constant |
| D. | It has a high thermal resistance |
| Answer» D. It has a high thermal resistance | |
| 15. |
The power to resist an electric stress is called as ___________ |
| A. | Dielectric strength |
| B. | Conduction |
| C. | Insulation |
| D. | Dielectric |
| Answer» B. Conduction | |