Indian Forest Service Examination Wood Seasoning, Preservation & Protection: practice questions

1 · Air seasoning · medium

Air seasoning cannot reduce moisture content below:

1. The fibre saturation point of the wood being dried
2. The outdoor equilibrium moisture content
3. Zero percent in dry weather
4. Half the green moisture content

2 · Kiln seasoning: kiln types and schedules · medium

Kiln samples are used to:

1. Grade timber by its appearance and colour
2. Test preservative penetration
3. Measure fire resistance
4. Track the moisture content of a charge

3 · Seasoning defects and their control · medium

Casehardening is detected by:

1. The Janka test
2. A spot test for copper
3. The prong test
4. A graveyard test

4 · Seasoning defects and their control · medium

Honeycombing is:

1. Surface checking on the wide face
2. Internal checking inside the wood
3. Insect holes
4. Splits at the ends

5 · Seasoning defects and their control · hard

Surface checks in drying form mainly because:

1. The core shrinks before the surface does
2. Longitudinal shrinkage is very large
3. The surface dries and shrinks before the core
4. Free water expands on drying

6 · Solar and other low-cost seasoning · medium

Teak was traditionally girdled before felling mainly to:

1. Increase growth before the final felling
2. Make the wood heavier
3. Prevent all insect attack
4. Dry the stem partly and let logs float

7 · Treatment methods: non-pressure and pressure (full-cell, empty-cell) · medium

The Rueping process begins with:

1. An initial vacuum, as in the Bethell process
2. Soaking for a week
3. No pressure at all
4. Initial air pressure on the wood

8 · Sap-displacement and diffusion methods · medium

Why must the Boucherie process be applied soon after felling?

1. Air soon blocks the cells
2. Bark falls off within an hour of felling
3. Preservative cannot enter green wood
4. Logs freeze solid soon after felling

9 · Biological and environmentally safer preservation; modified wood · hard

Natural products such as neem oil and chitosan for wood protection are generally:

1. More effective than all conventional preservatives
2. Promising but less effective in severe hazards
3. Banned in all countries
4. Only useful against marine borers

10 · Safety and environmental rules on preservatives · medium

Bunded storage at treatment plants is meant to:

1. Increase treatment pressure
2. Dry wood faster
3. Contain spills of chemicals
4. Display products