Indian Forest Service Examination (IFoS) — Forestry optional · India · Union Public Service Commission
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)
How our questions for Indian Forest Service Examination spread across the units of Wood Products & Forest-Based Industries. Difficulty: 8 easy, 21 medium, 10 hard.
| Wood energy: fuelwood, charcoal, pellets | 5 | |
| Veneer and plywood manufacture | 4 | |
| Particleboard, fibreboard (MDF) and oriented strand board | 4 | |
| Engineered wood: glulam, LVL, cross-laminated timber | 4 | |
| Pulp and paper: raw materials, pulping processes | 4 | |
| Wood chemistry and extractives | 4 | |
| Timber in construction and its standards | 4 | |
| Wood-based industries: raw-material supply and residues | 4 | |
| Sawmilling and recovery | 3 | |
| Chain of custody and legality in wood supply | 3 |
Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.
Quarter-sawn boards, compared with flat-sawn boards:
C. Shrink less in width and cup less
Faces are radial; recovery is lower and sawing slower.
Why is saw maintenance by a saw doctor important for recovery?
D. Straighter, thinner cuts
Accurate sawing needs less oversize and planing allowance.
Phenol-formaldehyde adhesives are used for:
D. Exterior and marine plywood
PF bonds resist boiling water; UF is for interior use.
Reconstituted panels are important for forest use mainly because they:
A. Use thinnings, residues and recycled wood
Small and low-grade material becomes useful panels.
Softwood fibres are commonly about how long?
B. 3 mm
Hardwood fibres are about 1 mm.
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 forest biorefinery concept aims to:
C. Using every wood component
Like an oil refinery using all fractions of crude.
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.
Timber should be dried before installation in buildings mainly to:
C. Limit movement after installation
Drying to service MC prevents shrinkage gaps and distortion.
Which tool quantifies the environmental impacts of building materials over their life?
A. Life-cycle assessment
LCA and environmental product declarations compare materials.
Ten here, 39 in the app. The Laisha app has every practice question we have written to Indian Forest Service Examination 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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