ICAR AICE-JRF/SRF Wood Products & Forest-Based Industries: practice questions

1 · Sawmilling and recovery · medium

Small-diameter logs generally give lower recovery mainly because:

1. They contain more heartwood than large logs
2. Slab and edging losses are proportionally larger
3. Saws cut them more slowly than large logs
4. They have no bark

2 · Sawmilling and recovery · hard

Why is saw maintenance by a saw doctor important for recovery?

1. It increases the diameter of the logs delivered
2. It adds preservative to every board sawn
3. It reduces the need for grading the output
4. Straighter, thinner cuts

3 · Veneer and plywood manufacture · medium

Phenol-formaldehyde adhesives are used for:

1. Interior plywood only, kept dry
2. Paper sizing
3. Pellet binding
4. Exterior and marine plywood

4 · Particleboard, fibreboard (MDF) and oriented strand board · hard

Reconstituted panels are important for forest use mainly because they:

1. Use thinnings, residues and recycled wood
2. Require large, clear, high-grade logs
3. Need durable species
4. Use only bamboo

5 · Engineered wood: glulam, LVL, cross-laminated timber · hard

Mjøstårnet in Norway, completed in 2019, is notable as:

1. A concrete gravity dam on a fjord
2. A tall mass timber building
3. A steel suspension bridge near Oslo
4. A pulp mill using spruce chips

6 · Engineered wood: glulam, LVL, cross-laminated timber · hard

A main advantage of engineered wood from plantation trees is that it:

1. It removes the need for any adhesives
2. It is immune to fire in buildings
3. It disperses defects
4. It uses only the heartwood of trees

7 · Pulp and paper: raw materials, pulping processes · hard

NSSC semi-chemical pulp is mainly used for:

1. Corrugating medium
2. Newsprint for daily papers
3. Tissue paper
4. Dissolving pulp

8 · Wood chemistry and extractives · medium

Tall oil is a by-product of:

1. Sulphite pulping of birch
2. Kraft pulping of pines
3. Charcoal making
4. Plywood pressing

9 · Wood chemistry and extractives · hard

The forest biorefinery concept aims to:

1. Burning all wood for electricity generation
2. Producing only paper from all inputs
3. Using every wood component
4. Avoiding any chemical processing of wood

10 · Timber in construction and its standards · medium

Timber should be dried before installation in buildings mainly to:

1. Increase its weight for stability
2. Make it combustible
3. Limit movement after installation
4. Change its species