Building Materials, Third Edition
222
IRQ
- Consider the following statements :
Among the more common varieties of timber, namely, sal, mango and deodar,
- sal is the strongest 2. mango is the least durable
- deodar is the lightest
Of these statements
(a) 1, 2 and 3 are correct (b) 1 and 2 are correct
(c) 1 and 3 are correct (d) 2 and 3 are correct
- The ratio of modulus of elasticity of wood in a direction perpendicular to the grain to the
value in a direction parallel to the grain falls in the range
(a)
1
20
to
1
12
(b)
1
3
to
1
2
(c) 2 to 3 (d) 5 to 10
- Match List-I with List-II and select the correct answer using the codes given below the
lists :
List-I List-II
A. Agricultural implements 1. Jack
B. Boat 2. Deodar
C. Railway sleepers 3. Babul
D. Musical Instruments 4. Benteak
Codes:
(a)ABCD (b)ABCD
1234 3421
(c)ABCD (d)ABCD
4312 2143
- 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%
- Timber can be made reasonably fire-resistant by
(a) soaking it in Ammonium Sulphate
(b) coating with Tar paint
(c) pumping creosote oil into timber under high pressure
(d) seasoning process
- Consider the following methods of preservation of timber :
- Pressure application 2. Brush application
- Dipping 4. Open tank
The correct sequence of these methods in the increasing order of their effectiveness is :
(a) 1, 3, 4, 2 (b) 3, 4, 2, 1 (c) 2, 3, 4, 1 (d) 4, 2, 1, 3
e&'()*2-)
- (b) 2. (b) 3. (c) 4. (b) 5. (c) 6. (a) 7. (d) 8. (b) 9. (d) 10. (d)
- (b) 12. (c) 13. (b) 14. (b) 15. (d) 16. (b) 17. (d) 18. (d) 19. (c) 20. (c)
- (c) 22. (b) 23. (a) 24. (b) 25. (b) 26. (b) 27. (c) 28. (d) 29. (b) 30. (a)
- (d) 32. (c) 33. (c) 34. (b) 35. (c) 36. (a) 37. (b) 38. (a) 39. (a) 40. (b)
- (d) 42. (d) 43. (c)
