In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is
Right angles
45°
60°
Parallel
Correct Answer :
A. Right angles
Related Questions
Distemper is
A paint consisting of powdered chalk, pigments and water
A water proofing agent
A paint consisting of coloured cement and water
A drying agent
The silica is used for preparing
Silica bricks
Coke oven
Lining for glass furnaces
All of these
Pick up the correct statement from the following:
Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer
Cupola furnace is used for the manufacture of cast iron
Red short iron is of no value for welding purpose
All the above
The lime which contains high percentage of calcium oxide, is generally called
Fat lime
Rich lime
White lime
None of these
Spalling hammer is used for
Driving wooden headed chisels
Rough dressing of stones
Carving of stones
Breaking small projection of stones
During smelting process, the combination of fuel in the furnace
Forms carbon dioxide
Carbon dioxide with carbon forms carbon mono-oxide
Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2
All the above
Due to attack of dry rot, the timber
Cracks
Shrinks
Reduces to powder
None of these
For high grade instruments the steel preferred to, is
Cast steel
Bessemer steel
Mild steel
Whitworth compressed steel
Mastic asphalt is generally used for
Damp proof course
Water proof layer
Partition walls
Both (A) and (B)
The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is
20
15
5
0
The percentage of water for normal consistency, is
5% to 15%
10% to 25%
15% to 25%
20% to 30%
Which of the following is the purest form of iron?
Cast iron
Wrought iron
Mild steel
High carbon steel
Pick up the correct statement from the following:
The heating of a material to redness in contact with air, is known as calcination
The property of lime by which it sets or hardens in damp places having no free circulation of air is called setting
The product that remains after calcination of limestone, is called lime
All the above
Slump test for concrete is carried out, to determine
Strength
Durability
Workability
Water content
Rocks formed due to alteration of original structure due to heat and excessive pressure are called
Sedimentary rocks
Igneous rocks
Metamorphic rocks
None of these
Pug mill is used for
Preparation of clay
Moulding of clay
Drying of bricks
Burning of bricks
The weight of 1 m3 of brick earth, is about
1200 kg
1500 kg
1800 kg
2000 kg
Bitumen emulsion is
A liquid containing bitumen in suspension
A paint
Used as anti-corrosive paint
All the above
The usual percentages of clay and metal in cermet are:
50%, 50%
60%, 40%
70%, 30%
80%, 20%
Pick up the correct statement from the following:
The phenol is carbolic acid
The phenol is either extracted from coal-tar or prepared from benzene
Phenol reacts with formaldehyde, to form phenol formaldehyde resin
All the above
Which one of the following is used for preparing porcelain?
Clay
Feldspar
Quartz
All of these
Which of the following trees yields hard wood?
Deodar
Chir
Shishum
Pine
Quick lime
Generates heat when added to water
Reacts with carbon dioxide
May be used for white-washing
All the above
Pick up the correct statement from the following:
Roasting is not necessary if iron ore is an oxide
Impurities float on the molten iron as slag
The slag contains lime about 45%
All the above
Plywood is made from
Common timber
Bamboo fibre
Teak wood only
Asbestos sheets
For light and ornamental casting, the most unsuitable pig iron, is
Bessemer pig
Grey or foundry pig
White or forge pig
Mottled pig
Brass is an alloy of
Copper and zinc
Zinc and lead
Tin and silver
Zinc and nickel
During pudding
Molten metal is kept clear of the fuel
Carbon is converted into carbonic acid gas
Silicon forms a slag
All the above
Refractory bricks resist
High temperature
Chemical action
Dampness
All the above
The variety of pig iron used for manufacture of wrought iron, is
Bessemer pig
Grey or foundry pig
White forge pig
Mottled pig