State Forest Service — Assistant Conservator of Forests (state PSC exams) · India · State Public Service Commissions (e.g. TNPSC, MPPSC, UPPSC, HPPSC, KPSC, MPSC)
Original practice questions written to the published syllabus · not past papersTurning wood into products: sawmilling, veneer and plywood, panels and engineered wood, pulp and paper, wood energy and the chemistry of wood-based industries.
In the exams: ICAR AICE-JRF 59 Unit 7 (manufacturing and utilization of timber and composite wood); ICAR AIEEA-PG Group 09 (major forest products, pulpwoods, fuelwoods); IFoS Forestry Paper II Section B (forest resources and utilization)
State Forest Service and Range Forest Officer exams, India
Sawmill recovery, plywood grades, pulpwood species, charcoal making and fuelwood, transit and legality of timber.
How our questions for State Forest Service spread across the units of Wood Products & Forest-Based Industries. Difficulty: 12 easy, 16 medium, 0 hard.
| Wood energy: fuelwood, charcoal, pellets | 4 | |
| Sawmilling and recovery | 3 | |
| Veneer and plywood manufacture | 3 | |
| Particleboard, fibreboard (MDF) and oriented strand board | 3 | |
| Pulp and paper: raw materials, pulping processes | 3 | |
| Timber in construction and its standards | 3 | |
| Wood-based industries: raw-material supply and residues | 3 | |
| Engineered wood: glulam, LVL, cross-laminated timber | 2 | |
| Wood chemistry and extractives | 2 | |
| Chain of custody and legality in wood supply | 2 |
Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.
Plywood has an odd number of plies mainly so that:
B. It stays flat and balanced
Symmetry about the centre prevents warping.
Decorative face veneers with figure similar to sawn wood are produced by:
A. Slicing flitches
Rotary peeling gives continuous sheets for plywood cores.
A kraft mill pulps 1000 kg of oven-dry wood at 48% yield. How much pulp does it produce?
C. 480 kg
1000 × 0.48 = 480 kg. 520 kg is the dissolved fraction.
ECF bleaching uses:
D. Chlorine dioxide
TCF uses oxygen, peroxide and ozone.
Oven-dry wood has a net calorific value of 19 MJ/kg. Using NCV(wet) = NCV(dry)(1 − w) − 2.44w, what is the net value at 30% wet-basis moisture?
B. 12.6 MJ/kg
19 × 0.7 − 2.44 × 0.3 = 13.3 − 0.73 = 12.6 MJ/kg. 13.3 ignores evaporation energy.
The gross calorific value of oven-dry wood is about:
B. 18–20 MJ/kg
Similar across species; moisture reduces useful energy.
Sandalwood oil is extracted from:
C. Heartwood
The fragrant oil is concentrated in heartwood and roots.
The European design code for timber structures is:
B. Eurocode 5
EN 1995; Eurocode 2 is concrete, 3 steel, 8 seismic.
In India, the code of practice for design of structural timber is:
D. IS 883
The National Building Code 2016 also covers timber and bamboo.
Chain of custody tracks wood:
A. From forest to final consumer
It verifies claims about origin.
Ten here, 28 in the app. The Laisha app has every practice question we have written to State Forest Service in this subject, marked as you go, with timed papers, a jump-to-unanswered list and a certificate when you pass at 70 per cent.
Free for ten days, then one subscription of US$10 a month. We would rather say so here than have you find it later.
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