Related Questions

Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory
A Mortars
B Cements
C Castables
D None of these
An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture?
A Cork
B Saw dust
C Sand
D Chemically prepared foam
If a refractory contains high content of silicon, it means refractory is
A Acidic
B Basic
C Neutral
D Brittle
Which of the following statements must be false? I. Debaters Y and C are never selected together. II. Debaters Z and B are never selected together . III. Debaters Z and D are never selected together .
A Only I
B Only II
C Only III
D All of these
City High School must put together a debating team consisting of four debaters.There are candidates of equal ability : X,Y and Z who are all seniors; and A,B,C and D who are all juniors..The school requires that there should be two seniors and two juniors in the team.It is also necessary that all of the debaters be able to work with one another. *Debaters Y and A cannot work together. *Debaters Z and C cannot work together. *Debaters A and B cannot work together. which of the following statements must be false? 1.Debaters Y and C are never selected together. 2.Debaters Z and D are never selected together. 3.Debaters Z and D are never selected together.
A Only I
B Only II
C Only III
D All of these
Refractory bricks having high thermal conductivity is desirable, when it is to be used in the
A L.D. converter
B Blast furnace
C Rotary kiln
D Recuperator
Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of
A Segar cones
B Muffles for muffle furnaces
C Insulating bricks
D Crucibles used for melting of high purity metals
High thermal conductivity of a refractory material is not important, when it is to be used in the
A Coke oven regenarators
B Muffle furnace
C Blast furnace
D Recuperators
Refractory castables are used for
A Producing monolithic linings
B Patch work
C Minimising the number of joints in the structure
D All of the above
These maps are used to plan construction projects that locate construction features so they fit the topography of the area:
A Subdivision plats
B Landscape maps
C Structural topography maps
D Structure location plans

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