1. The process of mixing sand with the powdered 8 natural soil to improve the quality is known as
(a) Moulding
(b) Tempering
(c) Drying
(d) Blending
2. Lime is mixed with brick earth
(a) To impart plasticity
(b) To increase durability
(c) To prevent shrinkage
(d) To increase impermeability
3. Maximum percentage of water absorption of II-class bricks in 24 hours should be limited to
(a) 10%
(b) 15%
(c) 20%
(d) 22%
4. The over ground continuous kiln is
(a) Bull's trench kiln
(b) Hoffman's kiln
(c) Tunnel kiln
(d) All of these
5. Fire bricks should be laid in
(a) Lime mortar
(b) Fire cement mortar
(c) Fire clay mortar
(d) All of these
Bullnose bricks are not used in
(a) Walls
(b) Rounding off sharp corners
(c) Arches
(d) Pillars
7. Terracotta is used in buildings for
(a) Ornamental work
(b) Insulation
(c) Storage
(d) None of these
[8:41 pm, 6/5/2024] ....... Shubham.......: f rain water falls on hot bricks, then shape of the bricks gets deformed, the defect is known as
as
(a) Efflorescence
(b) Bloating
(c) Chuffs
(d) Nodules
9. The moulded bricks are dried before burning to an approximate moisture content of
(a) 3%
(b) 6%
(c) 10%
(d) 20%
10. Hollow brick is
(a) Sound proof
of
to
(b) Heat proof
(c) About 1/3 in weight of standard brick
(d) All of the above
11. The compressive strength of burnt clay bricks as per IS 1077-1992 is
(a) 105 kg/cm²
(b) 150 kg/cm²
(c) 105-150 kg/cm²
(d) 35-350 kg/cm²
12. Consider the following statements:
A good soil for making bricks should contain
1. About 30% alumina.
2. About 10% lime nodules.
3. A small quantity of iron oxides, 5 to 6%.
4. About 5% magnesia.
Of these statements
(a) 1 and 2 are correct
(b) 1 and 3 are correct
[8:41 pm, 6/5/2024] ....... Shubham.......: (c) 1, 3 and 4 are correct
(d) 1 and 4 are correct
[8:42 pm, 6/5/2024] ....... Shubham.......: 13. Consider the following statements:
For the manufacture of good quality bricks it is essential to
1. Use a reverberatory kiln.
2. Blend the soil with clay or sand as deemed appropriate.
3. Kneading the soil in a ghani.
4. Temper the soil in a pug mill.
Of these correct statements are
(a) 1 and 3
(b) 2 and 4
(c) 1, 3 and 4
(d) 2, 3 and 4
14. The raw bricks shrink during drying and warp during burning because of
(a) Less lime in brick earth
(b) Less silica and excess magnesia in brick earth
(c) Excess of alumina
(d) Alkalies in bricks carth
15. In brick masonry the frog of the brick is generally kept on
(a) Top face
(b) Bottom face
(c) Exposed face
(d) Interior face
[8:42 pm, 6/5/2024] ....... Shubham.......: 16. The approximate weight of a brick should be
(a) 2.5 kg
(b) 4.5 kg
(d) 32 kg FERS
(c) 5.1 kg
17. Which one is the correct sequence of various operations of preparation of Brick-Earth. 1. Blending II. Digging III. Weathering IV. Unsoiling V. Tempering
(a) IV, II, III, V, I
(b) IV, II, III, I, V
(c) II, IV, V, III, I
(d) I, III, IV, V, I
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