For sanitary pipes and chemical stonewares,
Salt glazing is used
Lead glazing is used
Opaque glazing is used
None of these
Correct Answer :
A. Salt glazing is used
Related Questions
For construction of structures under water, the type of lime used, is
Hydraulic lime
Fat lime
Quick lime
Pure lime
The thermosetting plastic
Becomes rigid when moulded at suitable pressure and temperature
At 127°C to 177°C permanently set and further application of heat does not soften it
Chars at 343°C
All the above
The commonly used base for iron and steel work, is
Red lead
Zinc white
White lead
Titanium white
The usual percentages of clay and metal in cermet are:
50%, 50%
60%, 40%
70%, 30%
80%, 20%
Bituminous fells are used for
Covering A.C. sheets
Covering sloping roofs
D.P.C.
None to these
A first class brick when immersed in cold water for 24 hours should not absorb water more than
15 %
20 %
22 %
25 %
Shingle is
Decomposed laterite
Crushed granite
Water bound pebbles
Air weathered rock
Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as
Quick setting cement
Rapid hardening cement
White cement
Low heat Portland cement
Pick up the correct characteristic of Pyroxene from the following:
It forms octagonal crystals
It converts to chlorine by hydration
Its density is 2.3 to 3.6 g/cm2
All the above
With increase in moisture content, the bulking of sand
Increases
Decreases
First increases to a certain maximum value and then decreases
First decreases to a certain minimum value and then increases
A stone is rejected if it absorbs water more than
5 %
10 %
15 %
20 %
Sand stone is
Sedimentary rock
Metamorphic rock
Igneous rock
Volcanic rock
Slate is formed by metamorphic action on
Shale
Lime stone
Sand stone
Granite
Seasoning is
A process of removing sap
Creosoting
Painting with sodium silicate
Coating with tar
Asphalt is obtained from
Petroleum distillation
Bitumen distillation
Plastic distillation
None of these
Cast steel is manufactured by
Cementation process
Crucible process
Bessemer process
Open hearth process
The weight of 1 m3 of brick earth, is about
1200 kg
1500 kg
1800 kg
2000 kg
The low voltage porcelain is mainly used for
Switch block
Insulating tubes
Lamp sockets
All of these
The slag which floats on the surface of the molten iron generally contains
Lime (CaO) 45%
Silica (SiO2) 35%
Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8%
All the above
Lacquer is
Oil paint
Distemper
Spirit varnish
None to these
If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called
Bessemer pig
Grey or foundry pig
White or forge pig
Mottled pig
Gypsum consists of
H₂S and CO₂
CaSO4 and H₂O
Lime and H₂O
CO₂ and calcium
Asbestos cement
Is brittle
Warps due to changes in humidity
Strength is lowered when saturated by water
All of the above
Lime stones are generally known as
Aqueous rocks
Sedimentary rocks
Stratified rocks
All the above
Pick up the correct statement from the following:
The theory of formation of concrete is based on the phenomena of formation of voids
The bulking of sand is taken into account while volumetric proportioning of the aggregates
The dry sand and the sand completely flooded with water, have practically the same volume
All the above
The size of mould for bricks, is generally kept
A little large to specified size
A little small to specified size
Equal to specified size
10% larger than specified size
The most commonly used synthetic abrasive is
Aluminium carbide
Boric acid
Silicon
All of these
Which of the following is a mineral?
Basalt
Granite
Quartz
Syenite
According to IS specifications, the compressive strength of ordinary Portland cement after three days should not be less than
7 MPa
11.5 MPa
16 MPa
21 MPa
Brittleness of cold is due to an excess of
Sulphur
Carbon
Phosphorus
Silicon