Contractor exam C-33 trade PRACTICE EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS | ALREADY GRADED A+RECENT VERSION

Contractor exam C-33 trade PRACTICE EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS | ALREADY GRADED A+RECENT VERSION 1) If a spot of latex paint on wood remove it by - ANSWER Scraping with a knife 2) When working with a new wood, fill nails holes cracks and small holes - ANSWER After priming 3) Natural shellac is derived from secretions of - ANSWER Lac insects 4) The proper way to treat stains caused by rusted nail heads is to - ANSWER Sand, countersink nail, prime , fill and finish with two coats 5) The liquid portion of paint is called - ANSWER The vehicle 6) How should you clean a greasy kitchen wall prior to painting - ANSWER With trisodium phosphate 7) Which is the preferred primer for knots in wood - ANSWER Shellac 8) Best undercoat for new wood casing is - ANSWER Enamel 9) In general painting over wet surface will result in - ANSWER Blistering 10) When should you apply a seaming roller - ANSWER Immediately 11) Which improves the opacity of paint - ANSWER Binder 12) A scale 1/4" refers to - ANSWER 4'=1" 13) What flame spread classification is acceptable for a residential exit corridor - ANSWER Class iii 14) Which is best material to coat a wood deck - ANSWER Spar varnish 15) What will most Likely happen if a back in a stucco wall is filled with silicone caulk - ANSWER The paint will not cover 16) What is best material to fill in a crack in an interior wall - ANSWER Sparkle 17) Where is efflorescence found - ANSWER Concrete and masonry surface 18) Which of the following will give you the smoothest finish when painting a door with latex paint - ANSWER A sprayer 19) How long should you wait before painting after applying gypsum veneer plaster - ANSWER 4 weeks 20) Which of the following components of paint affects the adhesions of the surface - ANSWER Binder 21) When painting a window with a wood sash how far from the sash should the tape be placed - ANSWER 1/4" 22) Why is breathable paint useful for exteriors - ANSWER It won't blister 23) ALUMINUM preperation - ANSWER remove corrosion with wire brush remove oil and grease with solvents or steam etch unweathered aluminum with 10 % phosphoric acid and rinse prime with zinc chromate 24) SURFACE PREPARATION BRICK - ANSWER e remove dirt, excess mortar, efflorescence, etc. By brush, air, or e weather for one month before finishing with latex e can be sealed with a latex primer-sealer, a clear resin, or a clear silicone water repellant 25) SURFACE PREPARATION CONCRETE - ANSWER wash old concrete surfaces with detergent to remove oil and dirt, etch new (but cured) concrete surfaces with acid weather for one month before finishing with latex e if porous, use block filler or a cement grout/latex primer e if grouted or chalking, apply an alkali-resistant primer (e.g., clear phenolic or alkyd resin coating) . May be sealed with a clear silicone water repellant 26) SURFACE PREPARATION CONCRETE BLOCK - ANSWER must dry . If porous, use a block filler or a cement grout/latex primer 27) SURFACE PREPARATION CONCRETE FLOOR - ANSWER etch with a muriatic acid wash to improve adhesion prime with alkali- and water-resistant sealer 28) SURFACE PREPARATION GYPSUM BOARD (DRYWALL) - ANSWER prime with PV A sealer (not alkyd or oil primers, which will raise the nap) finish with latex or alkyd 29) SURFACE PREPERATION IRON, GALVANIZED - ANSWER Remove grease, residue, and corrosion with a solvent or chemical wash if unweathered, etch with a weak acid wash if weathered, treat as a ferrous metal e use a rust-inhibiting primer such as zinc chromate 30) SURFACE PREPARATION METAL, FERROUS - ANSWER clean corrosion from the surface e prime with alkyd metal primer 31) SURFACE PREPARATION PLASTER and STUCCO month - ANSWER cure at least one month at 60°F or more soft surfaces should be hardened with a mild acid (e.g., vinegar) or zinc sulfate wash check for moisture before sealing e prime with a PVA or alkyd primer/sealer prime highly alkaline surfaces or rough plaster with an alkali-resistant latex or alkyd 32) SURFACE PREPARATION SHINGLES, WOOD - ANSWER prime before nailing by dipping shingle in shingle stain, house paint thinned to shingle-stain consistency, or thin boiled linseed oil finish with stain or paint 33) SURFACE PREPARATION STEEL - ANSWER clean with solvent, wire brush, sand blasting, tooling, or acid wash . Prime with an alkyd rust-inhibiting coating 34) SURFACE PREPARATION STEEL - ANSWER clean with solvent, wire brush, sand blasting, tooling, or acid wash prime with an alkyd rust-inhibiting coating 35) SURFACE PREPARATION WOOD - ANSWER seal all knots and pitch stains with shellac or similar sealer prime or seal with an enamel undercoat fill nail holes, cracks, and small holes after the prime coat is applied a stain controller may be necessary before staining wood with a curving grain such as birch, maple, pine, poplar, and spruce 36) Masking tapes - ANSWER See picture 37) Sand paper grit sizes - ANSWER See picture 38) INTERIOR PREPARATION - ANSWER If a surface is shiny or glossy, use sandpaper or a commercial deglosser. 39) INTERIOR PREPARATION - ANSWER Areas such as kitchen cabinets, which may have a fil m of grease, should be washed down with a solution of TSP and warm water. 40) INTERIOR PREPARATION - ANSWER Remove or mask surface fittings such as electrical plates, light fixtures and ceiling fans. Furniture should be removed from the room, or moved into the center of the room and covered with drop cloths. 41) INTERIOR PREPARATION - ANSWER It is not recommended to paint over wallpaper because it may bleed pigment, raise the paper off the surface, etc. If you must paint it, sources recommend latex paint (even though the water base may dissolve the existing adhesive) because other paints may make the paper more difficult to remove at a later time. 42) INTERIOR PREPARATION - ANSWER When using wood puty to make repairs, prime before and after applying putty. 43) INTERIOR PREPARATION - ANSWER After replacing window puty, allow it to dry seven days before painting. Apply light coat of linseed oil or wood preservative before applying window putty to frame. If putty sticks to the knife, wet the blade with water. Use a putty knife to trim excess putty from the frame and panes. 44) INTERIOR PREPARATION - ANSWER Remove masking tape as soon as paint sets. If painting in direct sunlight, remove tape immediately after painting. When masking window panes, leave a gap of /h6 between the tape and the putty 45) INTERIOR PAINTING Ceilings - ANSWER Latex paints are less likely to show lap marks or to interfere with acoustical properties of acoustic tile or plaster, so they are almost always used on ceilings. If alkyd paints must be used, paint across the width rather than the length of the room in 2-foot strips to minim ize lap marks. 46) INTERIOR PAINTING Walls - ANSWER When using a roller, make the first stroke upward. Splatters are caused by rolling too fast or by lifting the roller off the surface before it has stopped spinning. When using a brush, minimize brush marks by using "dry" brush. 47) INTERIOR PAINTING Miscellaneous - ANSWER If there is bleeding when painting over a stained surface, apply two coats of thin white (bleached) shellac to the wood before applying paint. 48) INTERIOR PAINTING Miscellaneous - ANSWER When painting with enamels, use a "cross-brush" technique: brush in one direction and level in the perpendicular direction. Brushing slowly enables the bristles to force the paint into contact with the surface, produces better coverage, and requires less brushing. 49) INTERIOR PAINTING Miscellaneous - ANSWER Polyurethanes and vamishes should be brushed on across the grain, then lightly brushed with the grain to smooth out the finish. 50) INTERIOR PAINTING Miscellaneous - ANSWER When painting radiators: 1. Prime with red-lead paint; 2. Paint only visible areas; 3. Never use an aluminium or metallic paint, as they will reduce heat radiation. 51) INTERIOR PAINTING Miscellaneous - ANSWER When storing paints that have paint thinner as a solvent, a thin layer of paint thinner carefully poured over the surface will help prevent skinning for a few weeks. 52) Lacquer cannot be used over - ANSWER water based paint oil paint enamels 53) If an unfinished job must remain masked for one week, what type of tape should use? - ANSWER painter's blue tape 54) How do you prepare new wood for painting if it has weep and pitch? - ANSWER sealing 55) What causes overspray when using a spray gun? - ANSWER air pressure too high gun too far from surface improper technique 56) What causes fluid leakage from the packing nut of a spray gun? - ANSWER packing nut is too loose packing is worn or dry 57) When assessing the condition of a building site and drainage what should be considered first ? - ANSWER drainage needed for a new structure 58) May a worker wear leather soled shoes - ANSWER no, leather soled shoes are never recommended 59) What type of shoes should you wear on a roof with a 4:12 slope? - ANSWER rubber soled 60) Which of the following is correct concerning the notching and boring of joists - ANSWER notch at end 1/4 of joist depth max Notch top or bottom 1/6 dept max Bore at least 2" from top or bottom Bore diameter is 1/3 depth max 61) When notching and boring studs in bearing walls you must not cut more than - ANSWER 40% when boring, 25% when notching 62) When notching and boring studs in non bearing walls you must not cut more than - ANSWER 60% when boring, 40% when notching 63) What is b CALLED - ANSWER decking 64) How many receptacles are on a dedicated circuit - ANSWER 1 65) Which test is needed before installing a septic tank? - ANSWER percolation Water table level Soil type and strata 66) What is the max grade of a sidewalk? - ANSWER 8.33% 67) A collar bean is - ANSWER horizontal member that ties opposite rafters together 68) What min number of amps are needed to serve a 5000 sq ft family residence where everything is run on electricity - ANSWER 200 69) Which of the following types of wood is most commonly used for interior framing ? - ANSWER Douglas fir 70) What should be done if Native American burial artifacts or remains are discovered while digging? - ANSWER stop work immediately at the site and any nearby area reasonably suspected to have artifacts and remains and contact the county corner 71) Which variety is considered a four season grass? - ANSWER tall fescue 72) How do you know if a type of glass is classified as tempered - ANSWER manufacturers brand name & type of glass is identified on each piece 73) Paint grade wood cabinets require - ANSWER sanding, priming, and finishing 74) For a building to square you need - ANSWER opposite walls parallel and diagonals equal 75) What is the min distance from the center line of a toilet to a wall - ANSWER 17" 76) How should you adjust the pitch of a solar collector mounted on roof - ANSWER use cripples 77) What do you use a raked joint - ANSWER when the plans call for a specific and even joint depth 78) When would you wet concrete masonry blocks - ANSWER never 79) How should the length of glulam be determined if over 16' - ANSWER engineer must calculate length 80) Title 24 is applicable - ANSWER a. California only