FOREST UTILIZATION AND ENGINEERING
MOCK EXAM 2005
Prepared by For. Dennis P. Peque
I. MULTIPLE CHOICE (100 Points)
1. The property of paper to absorb light, important for book and newsprint paper.
A. brightness C. folding endurance E. absorption
B. permanence D. opacity
2. Browning of the surfaces of lumber during kiln drying.
A. machine burn C. charring E. oven burn
B. kiln burn D. Brownian movement
3. A condition existing in wood in which as a result of drying, the surface becomes set in an expanded
condition and is in tension and the center in compression.
A. casehardening C. honeycomb E. tension-compression ratio
B. reverse casehardening D. drying stress
4. Veneer may be cut in several ways. The most popular method of veneer preparation accounting for
almost 90% of all veneer cut is:
A. sawing C. rotary cutting E. cone cutting
B. slicing D. stay lag cutting
5. In having coconut trunks into lumber the most efficient type of bandsaw blade that could be
used is:
A. alternated swaged sawhead C. stellite-tipped saw blade E. none of the above
B. all-swage saw blade D. tungsten carbide-tipped
blades
6. “Lawanit”, a trade name of locally manufacture board technically classified as:
A. Particleboard C. Cardboard E. plyboard
B. Fiberboard D. Laminated board
7. The thermal capacity of wood is called
A. specific heat C. flammability E. BTU
B. heating value D. kindling flame
8. The effective distance between the knife and nosebar edges in veneer cutting is called:
A. nosebar compression C. nosebar width E. knife angle
B. nosebar depth D. nosebar opening
9. For exterior or marine plywood, the glue most commonly used is:
A. starch glue C. animal glue E. synthetic resin glue
B. casein clue D. blood glue
10. One characteristic of mechanical pulping is:
A. it produces pulp which are generally used for high quality paper
B. the wood is first converted into chips before further processing
C. it produces pulp which are generally used for cheaper grades of paper
D. the pulp yield is very low
11. The term “naval stores” as used in wood utilization refers to:
A. establishment engaged in the trading of products for ship building
B. chemicals used in bleaching pulp
C. spent liquor in the sulfate pulping process
D. rosin, turpentine, oils, tar and pitch produced from oleoresin.
12. Pitch problem is of common occurrence in paper manufacture. Pitch are actually made up of:
A. resinous extractives of the wood C. liquefied materials
B. hemicellulose component of the wood D. cell elements originating from the
center of the wood.
13. In glue spreading, the portions applied with glue are:
A. both faces of the core veneer
B. the faces of the back and face veneer in contact with core veneer
C. one portion each of the face and back veneers and both faces of the core
D. dependent on the condition prevailing in the plant
14. The minimum volume of a given piece of wood is obtained at:
A. fiber saturation point C. ovendry condition
B. green condition D. 12% moisture content
15. Some species of wood float in water. The reason for this is that:
A. a large portion of the volume of the wood species is occupied by cell cavities and voids
B. the species contains large quantities of extractives which are water soluble
C. the specific gravity of wood is high
D. a large portiuon of the wood volume is occupied by thick walled cells
16. Which of the following statement is true regarding paper making:
A. paper making usually begins with bleaching
B. the sheet of the paper is formed in fourdrinier wire
C. the plup solution that is placed in the headbox contains 70% water and 30% fiber
D. decrease the strength of very fiber
17. The chief use of Manila copal is in the:
A. manufacture of high grade C. preparation of viscose rayon E. outer covering of golf balls
varnish
B. manufacture of leather D. preparation of dissolving pulp
18. The main basis for determining the quality of the solid residue produced during destructive
distillation is the:
A. hydrogen content C. fixed carbon content E. color of the residue
B. amount of volatile materials D. fixed nitrogen content
19. One distinct advantage of bandsaw over circular saw is:
A. the installation cost is generally lower
B. it requires less space of saw filling operation
C. it requires less skilled sawyers
D. the waste produce in the form of sawdust is comparatively less.
20. In grading, logs to be graded shall be fresh cut, straight, cylindrical, straight-grained with well-
buck ends. This rule is true for which of the grades:
A. Peeler grades only C. Peeler, veneer and sawlog grades E. veneer grades only
B. Peeler, and veneer grades D. Veneer and sawlog grades
21. Which of the following statements could best describe the meaning of “complete tree
utilization”?
A. maximum utilization of the merchantable portion of the tree
B. manufacturing as many products from the tree as possible
C. putting up fully integrated wood-processing plant
D. achieving maximum value from the trees by using as much of the tree as possible
22. The wood of Almaciga may be different from that of apitong by:
A. presence of vessels in the former and absence in the latter
B. presence of vessels in the latter and absence in the former
C. ring porous structure in the former and diffuse porous in the latter
D. bigger pores in the latter.
23. The distinguishing characteristics of the wood of the family Leguminosae to which narra belong is:
A. apotracheal canals C. vertical resin canals E. aggregate rays
B. paratracheal canals D. tracheids
24. In kiln drying or air drying wood, which of the following criteria is not considered in
stickering?
A. size of the sticker C. sticker support guide and racks
B. the space and grades of wood used D. moisture content of sticker
25. Woods of species with fast rate of growth
A. high specific gravity C. low specific gravity
B. equal to those of regular rate of growth D. growth rate does not affect specific gravity
26. Which of these factors does not affect the penetration and absorption of preservative?
A. anatomy of wood C. treatment procedure
B. preparation of wood treatment D. color and figure of wood
27. Which of the following does not belong to this statement? The weight of the wood is the sum of
:
A. the weight of the wood substance C. the included water
B. the extractive p[resent D. the sum of its strength properties
28. The principal chemical constituent of the cell walls of higher plants which is soluble in acids but
resistant to alkalis:
A. holocellulose C. cellulose
B. hemicellulose D. lignin
29. A layer of water-proofing waxy materials overlaying the epidermis in plants
A. cutin C. lignin
B. tannin D. gum
30. Fibers recovered from the recycling of used paper are known as:
A. primary fibers C. tertiary fibers
B. secondary fibers D. bast fibers
31. Cells of wood near the pith are generally:
A. medium-size C. equal in size
B. larger D. smaller in size from pith to bark
32. The distinctive markings on the longitudinal surface of apiece of wood:
A. ripple marks C. grain
B. texture D. figure
33. The cambial layer of plants is responsible for the:
A. apical groth C. axial growth
B. radial growth D. tertiary growth
34. Variation in specific gravity of wood is due to:
A. difference in chemical properties C. difference in the amount of cell wall substance
B. difference in physical properties D. difference in strength properties
35. The hardness of wood is _____________ as it losses moisture below fiber saturation point.
A. decreased C. not affected
B. increased D. equal
36. A defect traceable to inter-checking and splitting and generally along the wood rays
A. honeycombing C. collapse
B. casehardening D. diamonding
37. Which of the following species is not a source of bast fibers
A. salago C. malabuho E. anilao
B. alagasi D. red lauan
38. The Philippine species best substitute for Lignum vitae because of its wood:
A. malabayabas C. ipil E. Liusin
B. mancono D. kamagong
39. A wood to be suitable for pencil slats musat possess:
A. good figure C. good whittling property
B. soft and light D. good texture
40. The presence of water-borne salts in wood ________________ the electrical resistance of
wood.
A. increases C. does not affect
B. decreases D. corrects
41. That part of the sawmill used to cut the board into width or used to remove the defective parts
of piece of lumber.
A. lathe C. edger
B. trimmer D. jointer
42. The standard dryness of wood is its:
A. ovendry weight C. weight at a given moisture
B. green weight D. air-dry weight
43. Wood is
A. good conductor of heat C. does not conduct heat
B. poor conductor of heat D. best conductor of heat
44. A green direction in which the fibers gradually alternate from right-hand to left-hand spiral back
again to adjacent wood growth
A. straight grain C. diagonal grain
B. curly grain D. interlocked grain
45. Which of the following statement is not achieved by air circulation during seasoning?
A. carry properly condition air to lumber purposes
B. drive evaporated air away from wood
C. secure uniform drying condition
D. decrease the efficiency of the heating system
46. This is the abnormal portion of the wood found in limbs and inclined trunks of trees
A. brash center C. center rot
B. wane D. reaction wood
47. The wood obtained from botanical group of trees that have broad leaves
A. sapwood C. hardwood
B. heartwood D. softwood
48. The strip of cells extending radially within the tree is termed as:
A. wood ray C. vessel
B.wood fiber D. resin canal
49. The fibers in the secondary phloem is known as:
A. fiber tracheids C. vasicentric
B. wood fibers D. bast fibers
50. The property of wood to resist cutting or indentation is:
A. whittling property C. tensile property
B. hardness D. toughness
51. The wood of oak is best used for:
A. wood barrels C. fish rod
B. spools D. wood carvings
52. Load which gradually increased in magnitude
A. permanent load C. rolling load
B. static load D. shock load
53. Which of these wood species does not produce resin?
A. almaciga C. benguet pine
B. apitong D. malakawayan
54. When the log scale exceed the lumber output, it is said to be:
A. overrun C. mill tally
B. underrun D. 100% utilization
55. This tree is considered as having the lightest wood:L
A. Ochroma lagopus C. Cananga odorata
B. Ceiba pentandra D. Polyscias nodosa
56. Which of the following is not softwood?
A. Malapapaya C. Mindoro Pine
B. Igem D. Malaalmaciga
57. A good substitute for black walnut
A. mahogany C. akle
B. kamagong D. tindalo
58. A device use in removing the bark of logs
A. spade C. spud
B. spad D. claw bar
59. Earthen tubes or runways built over surfaces of foundations to reach the wood above are signs
of attack by:
A. powder-post beetles C. fungi
B. subterranean termites D. dry wood termites
60. The peripheral milling of wood to smooth one or more surfaces to some predetermined
dimension in thickness or width.
A. mortising C. jointing
B. planing D. boring
61. A clearance provided in the saw to reduce friction during cutting
A. tension C. benching
B. gauge D. set
62. Complete the following statement: “as a general rule”
A. lighter species shrinks more across the grain than heavier ones
B. shrinkage is greatest along the length
C. quarter sawn boards change less in thickness than flat-sawn boards
D. heavier species shrinks more across the grain than lighter ones
63. If the kiln is operated properly, kiln drying makes:
A. lumber weaker C. no change in the strength of lumber
B. lumber stronger D. none of the abopve
64. The irreversible effect of high temperature on wood is one of degradation of wood substance
which results in:
A. loss of weight C. loss of weight and strength
B. loss of durability D. loss of moisture
65. When a load is maintained on abeam, additional time-dependent formation occurs and is termed
as:
A. elasticity C. modality
B. plasticity D. creep
66. The method of gathering resin from Dipterocarp species like Apitong:
A. slicing the bark C. boxing the wood
B. slicing the cambium D. none of the above
67. Botanically, softwoods are:
A. coniferous C. gymnosperms and conifers
B. woods that are soft D. gymnosperm
68. Veneer that is used for exposed surfaces of plywood:
A. face veneer C. middle layer
B. crossbands D. core veneer
69. A term used to imply dimensions in sawn lumber that slightly under nominal dimension
A. tally C. reject
B. scant D. degrade
70. Manufacturing imperfections include:
A. chipped grain C. machine burn
B. torn grain D. all of the above
71. Part of a tree remaining above and below the ground after the main stem is cut off:
A. bolt C. sawlog
B. stumpage value D. stump
72. The less dense, large celled part of the growth layer formed first during the annual growth
cycle.
A. early wood C. summerwood
B. latewood D. autumnwood
73. Cut radial surfaces in this type of wood produce the ribbon stripe figure:
A. diagonal C. cross grain
B. spiral D. interlocked grain
74. A ring porous wood:
A. narra C. a & b
B. kalantas D. none of the above
75. Which of the following genera of the coniferous species does not possess normal resin canals in the
its wood:
A. Podocarpus C. Picea
B. Pinus D. Pseudotsuga
76. Essential oils extracted in plants are almost completely insoluble in:
A. alcohol C. ether
B. water D. fatty acids
77. Ring porous species:
A. batitinan C. banuyo
B. white lauan D. marang
78. Species with ripple marks:
A. banaba C. almon
B. balobo D. kalunti
79. Which of the following species is not a hardwood?
A. amugauen C. apo oak
B. mollucan sau D. malapapaya
80. Which of the following species is characterized by the presencve of oil rings on the cross section
of the log?
A. mayapis C. apitong
B. almon D. palosapis
81. Which of the following species are commonly used for sliced veneer?
A. red lauan C. dao E. All of the above
B. narra D. pahutan
82. Which of the following species contains high amount of silica?
A. Dungon late C. duyok-duyok E. all of the above
B. bansalagin D. nato
83. Which of the following statement applies in view of the relationship between fiber characteristics and
paper properties.
A. the thicker the cell walls, the lower the burst and tensile strength
B. the thicker the cell walls, the lower the folding endurance
C. a & b
D. none of the above
84. The cross section of a vessel is known as
A. canal C. pits
B. pore D. tubes
85. A wood through which moisture moves readily
A. densified wood C. pervious wood
B. porous wood D. soft wood
86. Which of the four phases of life history of plant cells hardens the cell wall?
A. phase of origin C. phase of enlargement
B. phase of lignification D. cell wall thickening
87. Is a carefully worked out set of dry bulb
and wet bulb temperature to dry a specific lumber without
causing objectionable drying defects.
A. drying schedule C. kiln schedule
B. special schedule D. species schedule
88. Is a major importance in determining the ultimate economy of the wood:
A. length of service C. depth of penetration
B. retention of preservative D. absorption
89. Which of the following does not influence the formation of figure on wood:
A. fiber C. deposits
B. grain D. sawing techniques
90. Which of the following wood substance does not contribute to the dark color of the heartwood
A. Oils and gums C. extractives
B. cellulose D. resins and tannins
91. An amorphous substance with astringent taste and consist mostly of polyphenols:
A. tannin C. ash
B. lignin D. gums
92. When external forces or loads are applied to wood, the tendency is that:
A. casehardening will be developed in wood
B. the surface of the wood will developed checks
C. internal forces will be formed within the wood to resist changes in size and in shape
D. no changes will occur on the size and shape of the wooden member
93. In pulping, the wood must be debarked before any further processing is done. The reasons for this is:
A. the fiber content bark is very low
B. bark is always harder to pulp
C. the fibers of bark are very short compared to wood
D. bark of some species contains little resin hence very difficult to pulp
94. Which of the following statements is true regarding fiber saturation point (FSP)
A. FSP is a condition wherein the bound water in the cells are removed
B. FSP varies with different species and even with the different woods of the same species
C. FSP is the same regardless of species
D. FSP is condition wherein all water in wood have evaporated
95. Deposits consisting largely of calcium oxalate frequently found in the axial parenchyma or soft
tissues and in the ray cells
A. gums C. tannins
B. cellulose D. crystals
96. Which of the following statement is not rue regarding drying?
A. as wood dries, the wood fibers become still and strengthened
B. dried wood will support a greater load
C. as drying progresses, wood become easier to bend
D. treatability of wood is generally improved when dried up to fiber saturation point
97. The observed dimensional changes in wood are unequal along the three structural directions.
This phenomenon is an indication that wood is:
A. isotropic C. hygroscopic
B. anisotropic D. microscopic
98. Methods of piling boards to form a hollow triangle with their faces in contact at the corners.
A. box C. bulk or solid
B. crib D. cross
99. Species with pores obliquely arranged
A. agoho del monte C. bitanghol
B. bitaog D. none of the above
100. Which of the following does not describe the sapwood
A. extraneous materials mostly absent
B. strength at least as great as heartwood
C. does not contain toxic repellent chemicals
D. not discolored by staining fungi
