MCQOPTIONS
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MCQOPTIONS
This section includes 31 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the below is a property of soft wood? |
| A. | Medullary rays are less distinct |
| B. | Annual rings are less distinct |
| C. | Dark in colour |
| D. | Close grained structure |
| Answer» B. Annual rings are less distinct | |
| 2. |
Exogenous trees are further divided into: |
| A. | 3 |
| B. | 4 |
| C. | 2 |
| D. | 5 |
| Answer» D. 5 | |
| 3. |
Hard wood is strong in tension and weak in compression. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
Which of the below type of timber has Young’s Modulus greater than 9800 N/mm2, but less than 12600 N/mm2? |
| A. | Average timber |
| B. | Very good timber |
| C. | Good timber |
| D. | Light timber |
| Answer» D. Light timber | |
| 5. |
A long swan timber piece with parallel sides having its thickness less than 50 mm and width more than 50 mm is called a/an: |
| A. | board |
| B. | end |
| C. | scantling |
| D. | plank |
| E. | log |
| Answer» E. log | |
| 6. |
AsCu, a preservative for wood, developed by the Forest Research Institute, Dehradun, comprises of chemicals:As2O5.2H2O, CuSO4.5H2O and K2Cr2C7 in the proportion of |
| A. | 1 : 1 : 1 |
| B. | 1 : 2 : 3 |
| C. | 1 : 2 : 4 |
| D. | 1 : 3 : 4 |
| Answer» E. | |
| 7. |
Consider the following with regard to ‘the application of preservation of timber'1. Increase in the life span of the member2. increase in the strength of the timber3. Removal of moisture4. Prevention of growth of fungi by killing themWhich of the above are correct? |
| A. | 1, 2, 3 and 4 |
| B. | 2 and 3 only |
| C. | 1,2 and 4 only |
| D. | 2 and 1 only |
| Answer» D. 2 and 1 only | |
| 8. |
How is the process of treatment of wood using a preservative solution and forcing air in at a pressure designated? |
| A. | Rueping Process |
| B. | Lawry Process |
| C. | Full cell Process |
| D. | Empty cell Process |
| Answer» B. Lawry Process | |
| 9. |
Generally the swelling of wood along the length of fibres ranging from: |
| A. | 6 to 12% |
| B. | 3 to 5% |
| C. | 0.1 to 0.8% |
| D. | 13 to 15% |
| Answer» D. 13 to 15% | |
| 10. |
In the air-drying process, the practical limit of moisture content of timber is ______. |
| A. | 0.05 |
| B. | 0.15 |
| C. | 0.25 |
| D. | 0.35 |
| Answer» C. 0.25 | |
| 11. |
During the conversion of timber by sawing to obtain strong timber pieces, the cuts should be made by: |
| A. | Tangential sawing |
| B. | Quarter sawing |
| C. | Radial sawing |
| D. | Ordinary sawing |
| Answer» D. Ordinary sawing | |
| 12. |
A natural defect in timber in cracks extend from bark towards sapwood is called as __________ |
| A. | Star shakes |
| B. | Cup shakes |
| C. | Radial shakes |
| D. | Ring shakes |
| Answer» B. Cup shakes | |
| 13. |
In which of the following directions is the strength of the timber maximum? |
| A. | Parallel to grains |
| B. | 45° to grains |
| C. | Perpendicular to grains |
| D. | Same in all directions |
| Answer» B. 45° to grains | |
| 14. |
In hard wood, annual rings are: |
| A. | Clearly visible and nearer to each other |
| B. | Less distinct and far apart |
| C. | Clearly visible and far apart |
| D. | Less distinct and nearer to each other |
| Answer» C. Clearly visible and far apart | |
| 15. |
According to the relevant I.S. code, the weight of the timber is to be reckoned at a moisture content of: |
| A. | zero |
| B. | 4% |
| C. | 8% |
| D. | 12% |
| Answer» E. | |
| 16. |
Consider the following statements:1. The will be no defects in select grade timbers.2. The codal values for strength of grade – III timber without defects may be reduced by 37.5%3. For timber used as columns, the permissible stress in ungraded timbers is adopted with a multiplying factor of 0.504. In case of wind force and earthquakes, a modification factor of 1.33 adopted.Which of the above statements are correct? |
| A. | 1 and 3 only |
| B. | 1 and 4 only |
| C. | 2 and 4 only |
| D. | 2 and 3 only |
| Answer» D. 2 and 3 only | |
| 17. |
Chip mark, diagonal grain, torn grain and wane are the defects in timber due to: |
| A. | conversion |
| B. | insects |
| C. | natural forces |
| D. | fungi |
| Answer» B. insects | |
| 18. |
Gas(s) emitted rotting decomposition of timber is/are mainly |
| A. | Methane and Hydrogen |
| B. | Hydrogen Sulphide |
| C. | Carbonic acid and Hydrogen |
| D. | Ammonia |
| Answer» D. Ammonia | |
| 19. |
In a tree, the cambium layer is situated between: |
| A. | The outer bark and inner bark |
| B. | The inner bark and sap wood |
| C. | The sap wood and heart wood |
| D. | The pith and heart wood |
| Answer» C. The sap wood and heart wood | |
| 20. |
Consider the following statements regarding timber:1. The strength of timber increases by Kiln seasoning2. Cutting of wood is to be done prior to treatment.3. Water seasoning is good for prevention of warping.4. ASCU treatment enhances the strength of woodWhich of the above statements are correct? |
| A. | 1, 2 and 3 only |
| B. | 2, 3 and 4 only |
| C. | 1, 3 and 4 only |
| D. | 1, 2, 3 and 4 |
| Answer» B. 2, 3 and 4 only | |
| 21. |
EXOGENOUS_TREES_ARE_FURTHER_DIVIDED_INTO:?$ |
| A. | 3 |
| B. | 4 |
| C. | 2 |
| D. | 5 |
| Answer» D. 5 | |
| 22. |
Which of the below is a property of soft wood?$ |
| A. | Medullary rays are less distinct |
| B. | Annual rings are less distinct |
| C. | Dark in colour |
| D. | Close grained structure |
| Answer» B. Annual rings are less distinct | |
| 23. |
Hard wood is strong in tension and weak in compression? |
| A. | True |
| B. | False |
| Answer» C. | |
| 24. |
What is the density of a light timber? |
| A. | 5.5 kN/m<sup>3</sup> |
| B. | Less than 2.5 kN/m<sup>3</sup> |
| C. | 2.5 kN/m<sup>3</sup> |
| D. | Less than 5.5 kN/m<sup>3</sup> |
| Answer» E. | |
| 25. |
Which of the below type of timber has Young’s Modulus greater than 9800 N/mm2, but less than 12600 N/mm2?$ |
| A. | Average timber |
| B. | Very good timber |
| C. | Good timber |
| D. | Light timber |
| Answer» D. Light timber | |
| 26. |
Which of the following is a type of non-refractory timber? |
| A. | Semul |
| B. | Teak |
| C. | Sheesham |
| D. | Sal |
| Answer» B. Teak | |
| 27. |
IS 3629-1966 classifies timber into 3 classes based on: |
| A. | Availability |
| B. | Average life |
| C. | Durability |
| D. | Density |
| Answer» C. Durability | |
| 28. |
Which IS Code gives a classification of commercial timbers and their zonal distribution? |
| A. | IS 620 |
| B. | IS 399 |
| C. | IS 401 |
| D. | IS 190 |
| Answer» C. IS 401 | |
| 29. |
Which of the following is an example of soft wood? |
| A. | Sal |
| B. | Oak |
| C. | Deodar |
| D. | Mahogany |
| Answer» D. Mahogany | |
| 30. |
What is the life time of a moderately durable timber? |
| A. | 10-20 years |
| B. | 1-5 years |
| C. | 10-15 years |
| D. | 5-10 years |
| Answer» E. | |
| 31. |
Trees are generally classified, based on the mode of growth into: |
| A. | 2 |
| B. | 6 |
| C. | 4 |
| D. | 3 |
| Answer» B. 6 | |