Construction Materials

321) Which of the following bricks are used for lining of fumaces?

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refractory bricks

322) The internal size of mould used in brick preparation is

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greater than the size of a fully burnt brick

323) Advantage of a clamp compared to a kiln for buming bricks is that

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it has less initial cost

324) The constituent of cement which is responsible for all the undesirable properties of cement is

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tricalcium aluminate

325) The main constituent of cement which is responsible for initial setting of cement is

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tricalcium aluminate

326) The normal consistency of ordinary Port- land cement is about

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30%

327) For testing compressive strength cement, the size of cube used is

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50 mm

328) The slump recommended for mass concrete is about

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25 mm to 50 mm

329) Which of the following stresses is used for identifying the quality of structural steel?

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yield stress

330) Paints with white lead base are suitable for painting of

Discuss in Comment

wood work

Subject Notes

Objective Box

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