Related Questions

The percentage of alumina in a good brick earth lies between
A 5 to 10%
B 20 to 30%
C 50 to 60%
D 70 to 80%
The solid brick shown is made of small square shaped bricks of side 1. when the large brick is disassembled into its component small bricks. the total surface area of all the small bricks is how much greater than the surface area of the large brick?
A 32
B 40
C 60
D 72
The method of moving each brick through a small horizontal distance before it is finally laid in any brick wall and pressing it by means of brick hammer, is known as
A Troweling
B Laying
C Grouting
D Placing
পৃথিবী পৃষ্ঠে একটি ইটের ওজন 81 N. পৃথিবীর অর্ধেক বাসার্ধের সমান উচ্চতায় এবং অর্ধেক বাসার্ধের সমান গভীরতায় ইউটির উপরে পৃথিবীর অভিকর্ষ বলের মান কত হবে?(A brick weighs 81 N on the surface of the earth. What are the earth's gravitational forces act on it at a height of half of the radius of the earth and at a depth of half of the radius of earth, respectively?)
A 36 N and 81 N
B 36 N and 40.5 N
C 36 N and 20.25 N
D 98 and 40.5 N
E 81 N and 81 N
Excess of silica in brick earth results in
A Cracking and warping of bricks
B Loss of cohesion
C Enhancing the impermeability of bricks
D None of the above
Excess of alumina in brick earth makes the brick
A Impermeable
B Brittle and weak
C To lose cohesion
D To crack and warp on drying
Which of the following ingredients of the brick earth enables the brick to retain its shape?
A Alumina
B Silica
C Iron
D Magnesia
Semi-silica bricks compared to silica bricks have
A Less fusion point
B Better spalling resistance
C Both A & B
D Neither A nor B
An indication of degree of firing in silica brick is its
A Specific gravity
B Fusion point
C RUL
D None of these
Addition of zircon to silica refractory brick improves its
A Crushing strength
B Resistance to slag attack
C Neither A nor B
D Neither A nor B

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