Building Materials MCQs

Question 1

Pick up the correct statement from the following:

Accepted Answer

Answer

The free quartz suddenly expands at a temperature lower than 600°C

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The lime stone resists fire upto about 800°C and at higher temperature it splits into CaO and CO2

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The sand stone with silicates resist a fire in a better way

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The argillaceous stone though poor in strength can resist fire quite weak

Question 2

Pick up the correct statement from the following:

Accepted Answer

All the above

Answer

The heating of a material to redness in contact with air, is known as calcination

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The property of lime by which it sets or hardens in damp places having no free circulation of air is called setting

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The product that remains after calcination of limestone, is called lime

Question 3

Pick up the correct statement from the following:

Accepted Answer

All the above

Answer

The lime in excess makes the cement unsound and causes the cement to expand and disintegrate

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The silica in excess makes the cement stronger but its setting time also increases

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The excess amount of alumina weakens the cement

Question 4

Pick up the correct statement from the following:

Accepted Answer

All the above

Answer

The percentage of absorption for firebricks varies from 5 to 10

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The percentage of silica in silica bricks is to the extent of about 95 to 97 percent

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Roughly 1 to 2 percent of lime in silica bricks is added to act as binding material

Question 5

Pick up the correct statement from the following:

Accepted Answer

All the above

Answer

The phenol is carbolic acid

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The phenol is either extracted from coal-tar or prepared from benzene

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Phenol reacts with formaldehyde, to form phenol formaldehyde resin

Question 6

Pick up the correct statement from the following:

Accepted Answer

All the above

Answer

The plastic bottles are made by the process of blowing

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The application of thermo-setting resins on sheets of paper, is called laminating process

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The plastic articles made by placing raw material in the desired moulds, is known as moulding process

Question 7

Pick up the correct statement from the following:

Accepted Answer

All the above

Answer

The plywoods do not split or crack due to changes in atmosphere

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The commercial plywoods are available upto 150 cm wide and upto 300 cm long

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The plywoods possess uniform tensile strength in all directions

Question 8

Pick up the correct statement from the following:

Accepted Answer

All the above

Answer

The substance which consists of one primary chemical, is known as monomer

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The polymer consists of thousands of monomers joined together

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The polymer molecule is called macro-molecule

Question 9

Pick up the correct statement from the following:

Accepted Answer

All the above

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The theory of formation of concrete is based on the phenomena of formation of voids

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The bulking of sand is taken into account while volumetric proportioning of the aggregates

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The dry sand and the sand completely flooded with water, have practically the same volume