Lignin is the thin element cementing layer between
A. cellulose
B. helocellulose
C. hemicellulose
D. wood cell
D. wood cell
Wood readily give off and absorb moisture in the air makes it a
A. porous material
B. moisture retardant
C. water proof material
D. hygroscopic material
D. hygroscopic material
Through chemical analysis of the wood we could determine.
A. hardness of wood
B. heating value
C. specific gravity
D. density
B. heating value
Which of the following group of commercial trees are hundred percent falling under the classification of hardwood.
I. Agoho
II. Benguet pine
III. Gubas
IV. Binuang
A. IV and III
B. I, II and III
C. IV and II
D. IV and I
A. IV and III
Some plant which are believed to be source of herbal medicine by the indigenous people are often causing health problem when used. All the causes stated below are true except one.
A. unsanitary taking causing infection
B. herbal medicine not effective
C. dosage not determined causing over dosage
D. improper prescription of quack doctor
B. herbal medicine not effective
The difference between a tempered hard board and that standard hard board is that the latter is
I. not tempered
II. less moisture resistant
III. not pressurized
IV. not even fried
A. I, II
B. II, III, IV
C. I, II, IV
D. I, III
A. I, II
A shredded wood when mixed with cement and other binding component will produce a construction material called
A. excelsior
B. shredded board
C. cement fiber board
D. excelsior cement board
C. cement fiber board
Used for framing in house construction.
A. boards
B. studs
C. scantling
D. wood trims
B. studs
Acid stimulation treatment over freshly cut portion of wood resulted to
A. increase seasonal yield of gum extraction
B. prevent infection of the wood
C. avoid wood decay
D. prevent sap to flow
A. increase seasonal yield of gum extraction
That properties of wood which make it resistance to splitting.
A. hardness
B. cleavage
C. tensile strength
D. shearing strength
B. cleavage
A member of the Fagaceae family.
A. ulaian
B. gubas
C. yemane
D. bagras
A. ulaian
Example of wood species with ripple mark.
A. Tanguile
B. Apitong
C. Almaciga
D. Lumbayao
D. Lumbayao
One use of the by product of the chemical component of wood lignen is called
A. herbal medicine
B. perfume
C. preservative
D. vanillin for flavoring
D. vanillin for flavoring
In choosing the right type of lumber what are the things that must be considered?
I. use of a given kind of wood in a particular nature of construction
II. taste of the user
III. grading requirement
IV. preferably use hardwood
A. I, II
B. II, IV
C. I, III
D. III, IV
C. I, III
A method of splitting logs into lumber when the logs are cut into four parts and all cuts were made parallel along each quarter of the logs.
A. band sawing
B. rift sawing
C. flat sawing
D. quarter sawing
D. quarter sawing
Quereitron is a dye which is obtained from the inner bark of a wood belonging to the family
A. Apocenaceae
B. Bumbacaceae
C. Moraceae
D. Fagaceae
D. Fagaceae
Particle board and medium-density fiber board are known by the wood industry as
A. rigid panels
B. compress board
C. mat formed
D. splinter board
C. mat formed
Quarter sawing lumber is noted for its
A. decorative value
B. adaptability
C. smoothness
D. strength
A. decorative value
The chief difference between plywood and decorative panel of hard board and gypsum board are:
I. plywood is 100% wood
II. wood grain of hardwood and gypsum board are either lithographed on the surface by a vinyl film overlay
III. plywood is for interior use only
IV. gypsum board panel is external use only
A. I and III
B. II, III and IV
C. II and IV
D. I and II
D. I and II
Spiral grain displayed in a lumber is one form of
A. knot grain
B. rift grain
C. cross grain
D. slash grain
C. cross grain
Feed rate is the distance that the stock being processed during a given interval of time often called
A. orthogonal cycle
B. peripheral cycle
C. operational cycle
D. complete cycle
C. operational cycle
It is a paper board used for drawing purposes and in the manufacture of playing cards. It is made of a mixture of sulfite and soda pulp.
A. felt board
B. bristol board
C. tissue board
D. tex board
B. bristol board
NAPCP is a derivatives of preservative.
A. water borne
B. oil borne
C. synthetic
D. air borne
B. oil borne
Factors being considered in the choice of mine timber.
I. strength
II. durability
III. availability
IV. adaptability
A. I, II, IV
B. I, II, III
C. I, III, IV
D. III, IV
B. I, II, III