A. 50 MPa
B. 100 MPa
C. 150 MPa
D. 200 MPa
0
Spalling hammer is used for_____________?
0
Which of the following timbers is suitable for making sports goods ?
A. driving wooden headed chisels
B. rough dressing of stones
C. carving of stones
D. breaking small projection of stones
0
Sapwood consists of______________?
A. mulberry
B. mahogany
C. sal
D. deodar
0
In which of the following pairs both trees yield soft wood ?
A. innermost annular rings around the pith
B. portion of timber between heartwood and cambium layer
C. thin layers below the bark
D. thin fibre which extends from the pith outwards and holds the annular rings together
0
Which of the following trees yields hard wood ?
A. deodar and shishum
B. chir and sal
C. sal and teak
D. chir and deodar
0
The radial splits which are wider on the outside of the log and narrower towards the pith are known as________________?
A. deodar
B. chir
C. shishum
D. pine
0
The disease of dry rot in timber is caused by_____________?
A. heart shakes
B. cupshakes
C. starshakes
D. rindgalls
0
In which of the following directions, the strength of timber is maximum ?
A. lack of ventilation
B. alternate wet and dry conditions
C. complete submergence in water
D. none of the above
0
Which of the following represents a metamorphic rock? (1) slate (2) shale (3) quartzite . The correct answer is___________?
A. parallel to grains
B. 45° to grains
C. perpendicular to grains
D. same in all directions
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