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MCQs 1: Crushing strength of a first class brick should not be less than_____________?

3.5 N/mm2 7.0 N/mm2 10.5 N/mm2 14.0 N/mm2
Answer Explanation

MCQs 2: The age of a tree can be known by examining_________________?

cambium layer annular rings medullary rays heart wood
Answer Explanation

MCQs 3: Excess of alumina in brick earth makes the brick______________?

impermeable brittle and weak to lose cohesion to crack and warp on drying
Answer Explanation

MCQs 4: Percentage of silica in a good brick earth lies between_______________?

5 to 10% 20 to 30% 50 to 60% 70 to 80%
Answer Explanation

MCQs 5: The percentage of alumina in a good brick earth lies between________________?

5 to 10% 20 to 30% 50 to 60% 70 to 80%
Answer Explanation

MCQs 6: The nominal size of the modular brick is_______________?

190 mm x 90mmx 80 mm 190 mm x 190 mm x 90 mm 200 mm x 100 mm x 100 mm 200 mm x 200 mm x 100 mm
Answer Explanation

MCQs 7: Excess of silica in brick earth results in______________?

cracking and warping of bricks loss of cohesion enhancing the impermeability of bricks none of the above
Answer Explanation

MCQs 8: Which of the following ingredients of the brick earth enables the brick to retain its shape ?

alumina silica iron magnesia
Answer Explanation

MCQs 9: The process of mixing clay, water and other ingredients to make brick is known as______________?

kneading moulding pugging drying
Answer Explanation

MCQs 10: The internal size of mould used in brick preparation is__________________?

equal to the size of a fully burnt brick smaller than the size of a fully burnt brick greater than the size of a fully burnt brick none of the above
Answer Explanation

MCQs 11: Which of the following bricks are used for lining of furnaces ?

overburnt bricks underburnt bricks refractory bricks first class bricks
Answer Explanation

MCQs 12: Pug mill is used for_______________?

preparation of clay moulding of clay drying of bricks burning of bricks
Answer Explanation

MCQs 13: Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth ?

lime stone and alumina silica and alkalies alumina and iron alkalies and magnesium
Answer Explanation

MCQs 14: The frog of the brick in a brick masonry is generally kept on______________?

bottom face top face shorter side longer side
Answer Explanation

MCQs 15: Advantage of a clamp compared to a kiln for burning bricks is that_______________?

it takes less time for burning it gives more output of first class bricks it has less initial cost it is suitable when bricks are required in large numbers
Answer Explanation

MCQs 16: Number of bricks required for one cubic metre of brick masonry is____________?

400 450 500 550
Answer Explanation

MCQs 17: Quick lime is_______________?

calcium carbonate calcium oxide calcium hydroxide none of the above
Answer Explanation

MCQs 18: Quick lime is (1) slow in setting (2) rapid in slacking (3) good in strength The correct answer is____________?

only (1) only (2) both (1) and (2) both (2) and (3)
Answer Explanation

MCQs 19: Glazing is used to make earthenware______________?

hard soft porous impervious
Answer Explanation

MCQs 20: Hydraulic lime is obtained by_______________?

burning of lime stone burning of kankar adding water to quick lime calcination of pure clay
Answer Explanation

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