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9Forest Utilization_18 (1) GL

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

___________ are hardwood species usually grown in temperate countries.

a)

Merbau

b)

Cedar, Fir, Hemlock

c)

Mapple, Oak, Ash

d)

Balsa, Balau, Keruing

2.

What is the condition of cell wall is saturated with water and there is no water in the lumen?

a)

Fiber saturation point

b)

Water dryness

c)

Abnormality of water flow

d)

Deficiency of water flow

3.

Pentachlorophenol is a perspective which is characterize as__________.

a)

Oil borne

b)

Systemic

c)

Organic based

d)

Water borne

4.

Uneven drying of the surface of lumber causes the defect known as_________.

a)

Cellpase

b)

Surface and end checking

c)

Heart shake

d)

Heart check

5.

Industrial cogeneration using wood and agro-residues as fuel gives the following benefits.

I. Increase efficiency of energy conversion and use

II. More decentralized form of electricity generation thus, less transmission losses and investment to grid capacity

III. More employment

IV. Less dependent to electricity energy

a)

I, IV

b)

I, II, III

c)

I, II, IV

d)

III, IV

6.

Wood saccharification simply means

a)

Extraction of hydrated tar from bicarbonate extract

b)

Acid hydrolysis of wood cellulose to produce sugar

c)

Separation of acid liquid for soluble tar

d)

Methyl acetone undergoes further distillation

7.

This hardwood species belongs to the genus Instia.

a)

Kalantas

b)

Dao

c)

Ipil

d)

Betis

8.

To sustain operation of a wood processing plant it is more important that the________ is being insured.

a)

Conversion efficiency

b)

Allowable cut

c)

Capacity utilization

d)

Annual log requirement

9.

Bristol is a paper board manufactured by mixing sulfite and soda pulp is primarily use for__________.

a)

Manufacturing toys

b)

Drawing purposes

c)

Wrapping hard materials

d)

Paper money

10.

A portion of log sawn on two or more series and intended for manufacturing into lumber or veneer is called____________.

a)

Dimension lumber

b)

Flitch

c)

Squared lumber

d)

Cant

11.

This method has several shortcomings which of the following is not considered a shortcoming.

a)

Low productivity

b)

Very cheap to work on

c)

High percentage of waste and high mangrove requirement

d)

Need for extensive planning and grinding

12.

All are considered herbal medicine, EXCEPT one:

a)

Lagundi tablet

b)

Kampupot tablet

c)

Charatia pills

d)

Virgin coconut oil

13.

There are many standard grades of plywood which are determined based on their uses. One of the common use of plywood is for structural and construction and this type of plywood is known as________.

a)

Engineered grade

b)

Appearance grade

c)

Class grade

d)

Export grade

14.

What kind of wood decay usually occur when both the cellulose and lignin in wood is removed?

a)

White rot

b)

Wet rot

c)

Brown rot

d)

Yellow rot

15.

Narra wood is the best distinguished/characterized by the presence of:

a)

Yellowish deposit

b)

Ripple mark

c)

Oily deposit

d)

Chalk-like deposit

16.

Subjecting wood to high temperature will influence the__________.

a)

Warping on the wood density

b)

Lower wood density

c)

Retardation of the development of wood decay

d)

Lower specific decay

17.

An example of dimension lumber is__________.

a)

1" x 4" x 6'

b)

2" x 3" x 6'

c)

1" x 5" x 6'

d)

2" x 5" x 6'

18.

What is the situation when the moisture content in wood neither gain nor loses moisture to the surrounding air?

a)

Absolute humidity

b)

Equilibrium moisture content

c)

Bound water

d)

Fiber saturation point

19.

Resin obtained from Apitong is commonly known as__________.

a)

Manila copal

b)

Balau

c)

Manila Elemi

d)

Gutta percha

20.

Plant which was popularized due to its extract and claimed to have some therapeutic effects in lowering blood sugar.

a)

Ampalaya

b)

Papaya

c)

Lagundi

d)

Banaba

21.

Principal consideration why pine trees are preferred for mine timber.

a)

It is reservoir

b)

Long fiber and does not break easily

c)

It is cheap

d)

It is light in weight

22.

Hydrapulper is an equipment use during_________.

a)

Debarking of logs

b)

Gravity thickening

c)

Repulping

d)

Brown stockwashing

23.

Wood pulp dried and compressed rather than being produced in flexible plies which is commonly used in the form of ceiling acoustic tile.

a)

Ply board

b)

Card board

c)

Chip board

d)

Cement board

24.

Resin is a very important raw material for manufacturing plants and this is extracted from the following plants.

I. Agathis alba

II. Pili

III. Casuaria Sp.

IV. Dipterocarpus sp.

a)

IV, III

b)

I, II, IV

c)

I, II, III

d)

I, IV

25.

_________ is the trade name for wood product in timber classified as dicot.

a)

Hard wood

b)

Soft wood

c)

Gymnosperm

d)

Conifers

26.

For a flat wood slap of homogeneous material, the resistance to heat transfer varies directly as the slab thickness and inversely as the thermal conductivity resistance.

a)

Thermal conductance

b)

Internal resistivity

c)

Heat transfer

d)

Heat rejection

27.

In scientific name Shorea negrosensis, negrosensis is the___________.

a)

Generic name

b)

Specific epithet

c)

Binomial name

d)

Latin name

28.

Tension of wood in hardwood is usually referred to as__________.

a)

Custard wood

b)

Reaction wood

c)

Juvenile wood

d)

Compression wood

29.

What is an example of non-pressure treatment process being applied in wood preservation?

a)

Reuping process

b)

Bethel process

c)

Steeping process

d)

Conry process

30.

Growth ring cells characterized by smaller cavities and thicker walls of trees in temperature countries is__________.

a)

Latewood

b)

Early wood

c)

Annual ring

d)

Springwood

31.

What are the wood classified and characterize as non-porous wood?

a)

Kalantas, Almon, Mahogany

b)

Narra, Tindalo, Kamagong

c)

Apitong, Bitanghol, Bolong-eta

d)

Almaciga, Igem, Benguet Pine

32.

Exterior water proof plywood is bonded with chemical compound known as_________.

a)

Pentachlorophenol

b)

Urea formaldehyde

c)

Boron compounds

d)

Phenol formaldehyde

33.

What is the insect that belongs to the order Isoptera known to be the most destructive insect to wood which causes significant economic losses?

a)

Centipede

b)

Butterfly

c)

Beetle

d)

White ant

34.

A polysaccharide of repeating glucose molecules in wood is________.

a)

Cellulose

b)

Lignin

c)

Extractives

d)

Tyloses

35.

Structural fiber wallboard used in building construction is composed of________ molded or pasted together and usually sized on the surface or throughout.

a)

Layer of veneer

b)

Sawmill waste

c)

Sawdust

d)

Layer of chipboard

36.

The property of any wood material that allows absorption and loss water that affects the wood quality during seasoning is called____________.

a)

Orthotropicity

b)

Absorb capacity

c)

Hygroscopicity

d)

Anisotropicity

37.

Apitong has a _________ when compared from guijo texture.

a)

Glossy texture

b)

Fine texture

c)

Coarser texture

d)

Heavier texture

38.

Depression of the moisture content of wood occurs due to_________.

a)

Dry bulb depression

b)

Due point temperature is reach

c)

Absolute temperature difference of fresh cut and oven dried wood

d)

Difference of dry bulb and wet bulb difference

39.

Cellulose molecules arrange into ordered strands during growth of the tree.

a)

Wood rays

b)

Vessels

c)

Tracheids

d)

Fibrils

40.

Moisture in trees when freshly-cut is often referred as________.

a)

Gum

b)

Dalingdingan

c)

Mangachapui

d)

sap

41.

A woody plant belonging to Moraceae family.

a)

Lanete

b)

agoho

c)

Antipolo

d)

Dita

42.

Used in applying the adhesive mix over the surface of the core veneer or crossbands.

a)

Glue-mixer

b)

Veneer spreader

c)

Glue-spreader

d)

Core coater

43.

A series of markings made by machine knives in dressed lumber is________.

a)

Degrade

b)

Knife mark

c)

Defect

d)

Blemish

44.

Growth of destructive fringe in wood materials is due to the presence of________.

a)

Low air circulation

b)

High relative humidity

c)

High temperature

d)

Moisture

45.

The most preferred wood for furniture and cabinets.

a)

High specific gravity group

b)

Very dense species

c)

Medium and moderate

d)

Low specific gravity

46.

What property of the wood that exhibits different values when tested along the axes in different directions?

a)

Hygroscopic property

b)

Mechanical property

c)

Anisotropic property

d)

Structural property

47.

Low specific gravity woods_______ for furniture making.

a)

Not preferred

b)

Very in demand

c)

Not in demand

d)

Moisture

48.

Resin canal are cavities surrounded by _________ that secrets gum, oil, ect.

a)

Tracheids

b)

Pores

c)

Vessels

d)

Parenchyma cells

49.

__________ is a type of plywood that is capable of with standing prolonged exposure to severe conditions.

a)

Interior type plywood

b)

Multiple-use plywood

c)

Grade C plywood

d)

Exterior-type plywood

50.

Longitudinal sap conducting elements in soft wood is _______.

a)

Tracheids

b)

Vessels

c)

Resin canals

d)

Gum pockets