Ingredients used for coal tarring are
A. unslaked lime, tar and kerosene oil
B. tar, turpentine and linseed oil
C. slaked lime, tar and spirit
D. cerosote, tar and linseed oil
The ultimate tensile strength of a good hydrualic lime in (1:3) line sand mortar should not be less than….... N/mm^2
A. 1
B. 0.7
C. 0.5
D. 0.3
In which of the structure weep holes are provided?
A. retaining walls
B. foundations
C. shear walls
D. none of these
Distemper is used on
A. plastered surface exposed to weather
B. plastered surface not exposed to waether
C. compound wall
D. roof top
The attrition test on stones is performaed
A. to determine the crushing strength
B. to asses the resistance to weather
C. to ascertain stability upon exposure to acid fumes
D. to determine the rate of wear due to grinding action
Uniform seasoning of wood is done by
A. Vapour seasoning
B. klin seasoning
C. electirc seasoning
D. water seasoning
The penetration test for bitumen is conducted at a temperature
A. 80C
B. 37C
C. 25C
D. 50C
Sieve analysis of Portland cement is done on IS sieve number:
A. 3
B. 5
C. 7
D. 9
The most durable varnish is:
A. water varnish
B. spirit varnish
C. turpentine varnish
D. oil varnish
Plywood is made from
A. common timber
B. bamboo fiber
C. teak wood only
D. asbestos sheets
Which of the following stones is generally used for roofing in rural Nepal?
A. marble
B. boulders
C. slate
D. lime stone
A good quality cement should have higher percentage of
A. silica
B. free lime
C. di-calcium silicate
D. tri-calcium silicate
The nature of ceramic material is
A. hard and brittle
B. soft and brittle
C. hard and ductile
D. soft and ductile
An alloy is generally prepared to increase
A. strength
B. hardness
C. toughness
D. all of the above
The thickness of 25 gauge sheer is:
A. less than 1 mm
B. 1 mm
C. 1-1.5 mm
D. 1.5-2 mm
A metamophosed mineral entirely composed of silica is
A. marble
B. granite
C. slate
D. quartz
Crushing strength for most of the building stone should be more than
A. 500 kg/m^2
B. 1000 kg/m^2
Note: The supplied units appear incorrect; check the original source before using this value.
C. 1500 kg/m^2
D. 2000 kg/m^2
What is the common name of calcinated gympsum?
A. kankar
B. lime
C. plaster of paris
D. cement
White cement as compared to grey cement have
A. similar properties
B. inferior properties
C. better properties
D. superior properties
In vicats's Apparatus test the diameter of viact plunger is
A. 5 mm
B. 10 mm
C. 15 mm
D. 20 mm
The number of corrugation in a galvanized corrugated sheet is usually
A. 12
B. 10
C. 8
D. 6
Tar is made by the distillation of
A. petrol
B. coal
C. asphalt
D. bitumen
What type of primer coat should be applied in painting galvanized iron surface?
A. lead oxide
B. iron oxide
C. zinc oxide
D. None of above
The range of acrbon content in mild steel is generally
A. less than .1%
B. .2% to .5%
C. .5% to 1%
D. 2% to 5%
The truck of tree left after cutting all the branches is known as
A. log
B. batten
C. plank
D. baulk
The moisture absorption of a good stone should be less than
A. 1%
B. 5%
C. 10%
D. 15%
The composition of copper and tin in alloy bronze is
A. 90% and 10%
B. 80% and 20%
C. 70% and 30%
D. 60% and 40%
Smith test is performed on stones for
A. durability
B. water absorption
C. soluble and clayey matter
D. hardness
Softer variety of steel is obtained by
A. cementation process
B. crucible process
C. bessemer process
D. open hearth process
The normal consistency of cement is
A. 25-33%
B. 33-35%
C. 5-7%
D. 20-30%
The decreasing order of rate of hydration of cement constituent is
A. C3S,C2S and C3A
B. C2S, C3A and C2S
C. C3A, C2S and C3S
D. C3A, C3S and C2S
The normal consistency of a standard cement paste generally lies within the range of
A. 10-15%
B. 26-33%
C. 40-50%
D. 55-60%
Plywood is manufactured by gluing together
A. an odd number of veneers with grains placed at right angles to each other
B. an even number of veneers with parallel grains
C. sawdust bonded with resin
D. compressed wood fibres only
The compound mainly responsible for the early setting and hardening of ordinary Portland cement is
A. tricalcium silicate
B. magnesium oxide
C. free lime
D. gypsum
Seasoning of timber is carried out mainly to
A. increase its weight
B. reduce its moisture content and improve durability
C. increase its moisture content
D. change its natural colour
Stainless steel resists corrosion mainly due to the presence of
A. carbon
B. chromium
C. manganese
D. sulphur
Bitumen is obtained as a residue of the
A. destructive distillation of coal
B. fractional distillation of crude petroleum
C. burning of wood
D. calcination of limestone
Bitumen is dissolved in:
A. water
B. sodium chloride
C. carbon disulphide
D. carbon dioxide
Softest rock is:
A. talc
B. marble
C. slate
D. granite
The good soil for making bricks is:
A. alluvial
B. clay
C. sandy
D. silty
The commonly used thinner in oil paints is:
A. turpentine
B. olive oil
C. sprit
D. all of the above
In mild steel, carbon; content is
A. less than 0.25%
B. between 0.25 and 0.75%
C. between 0.75 and 1.5%
D. more than 1.5%
For construction of structures under water, the type of lime uses is:
A. hydraulic lime
B. fat lime
C. quick lime
D. none of these
Gypsum is added to cement for:
A. providing high strength
B. controlling initial setting time
C. lowering the clinkering temperature
D. all of the above
The approximate weight of one cubic meter of mild steel is:
A. 7850 kg
B. 2400 kg
C. 1500 kg
D. 6850 kg
Which of the following has highest crushing strength?
A. basalt
B. granite
C. gneiss
D. laterite
The most important tool in brick laying for lifting and spreading mortar and for forming joints is
A. trowel
B. square
C. bolster
D. scutch
Dry rot in timber works is mainly due to the attacks of
A. fungus
B. bacteria
C. virus
D. none of above
Brass is an alloy of
A. copper and zinc
B. zinc and lead
C. tin and silver
D. zinc and nickel
The steel used in RCC work is
A. stainless steel
B. mild steel
C. high carbon steel
D. wrought iron
Mastic asphalt is
A. acid resisting
B. non corrosive material
C. corrosive material
D. heating resisting material
The initial and final setting times of quick setting cements are
A. 15 minutes and 45 minutes
B. 20 minutes and one hour
C. 10 minutes and 30 minutes
D. 5 minutes and 30 minutes
The best mortar suitable for underwater or damp construction is:
A. lime mortar
B. cement mortar
C. mud mortar
D. gauged mortar
Plaster of Paris is obtained by heating gypsum to a temperature of about:
A. 100°C
B. 170°C
C. 300°C
D. 500°C
The process of removing carbon and other impurities from pig iron to produce wrought iron is called:
A. puddling
B. tempering
C. annealing
D. galvanizing
Teak is generally classified as a:
A. soft wood
B. hard wood
C. evergreen wood only
D. none of the above
The process of giving a smooth and glossy finish to a stone surface using abrasives is known as:
A. dressing
B. polishing
C. chiselling
D. knocking
Galvanizing of steel members is done mainly to protect against:
A. fire
B. corrosion
C. fatigue
D. fracture
In random masonry, bond stone shall be provided at the rate of at
A. one to every .9 sq.m. of exposed face
B. one to every .5 sq.m. of exposed face
C. one to every 1.5 sq.m. of exposed face
D. none of above
Dry rot and wet rot in timber are
A. Defects due to Fungi and insects
Note: The supplied option groups fungi and insects together; dry rot and wet rot are caused by fungi.
B. Defects due to seasoning
C. Natural defects in timber
D. None of the above
Setting time of ....................is more
A. Tar
B. Bitumen
C. Asphalt
D. None of the above
.................... forms transparent film over surface so that grains of wooden surface are clearly visible.
A. Creosote
B. Varnish
C. Aluminium paint
D. None of the above
Which of the following is not a field test for brick earth
A. Consistency test
B. Moulding test
C. Water absorption test
D. Deformation and shrinkage test
Which one of the following stones is layered?
A. Granite
B. Lime stones
C. Gabro
D. Dolerite
Clay imparts............................to lime
A. Strength
B. Hydraulicity
C. Plasticity
D. all of above
'Vitrification' during brick manufacture occurs mainly at the stage of:
A. drying
B. moulding
C. tempering
D. burning at high temperature
Freshly quarried, soft laterite is generally considered unsuitable for immediate use as building stone mainly because it:
A. hardens only gradually on exposure to air and is initially soft/weak
B. is too heavy to transport
C. cannot absorb any moisture
D. is too hard to dress
Which of the following is a natural cementing material historically used before Portland cement?
A. fly ash
B. gypsum board
C. lime
D. silica fume
'Case hardening' is a heat treatment process that hardens:
A. the entire cross-section of the steel uniformly
B. only the core, keeping the surface soft
C. neither the surface nor the core
D. only the surface layer, keeping the core tough
Toughened (tempered) glass is preferred for structural glazing mainly because of its:
A. increased strength and safer fragmentation on breakage
B. high thermal conductivity
C. high tensile strength alone
D. high ductility
PVC pipes are generally preferred over GI pipes for water supply mainly due to their:
A. higher cost
B. higher mechanical strength
C. higher heat resistance
D. corrosion resistance and light weight
Additive is added when
A. grinding cement clinker
B. mixing of ingredients of concrete
C. transporting concrete
D. curing of concrete
A pug mill is used for
A. softening brick earth
B. moulding brick earth
C. tempering brick earth
D. providing brick earth
Bituminous felts are used for
A. covering A.C. Sheets
B. Covering sloping roofs
C. D.P.C
D. None of these
Snowcrete is one of the patent forms of
A. distempers
B. water proof cement paints
C. enamel paints
D. cellulose paints
Plywood is normally available
A. 1 mm thick
B. 2 mm thick
C. 2 to 3 mm thick
D. 3 to 4 mm thick
Stainless steel contains
A. 18% of chromium and 8% nickel
B. 8% of chromium and 18% nickel
C. 12% of chromium and 36% nickel
D. 36% of chromium and 12% nickel
The property by virtue of which lime sets under water is known as
A. slacking
B. setting
C. hydraulicity
D. calcining