Building Materials MCQ Questions & Answers | Civil Engineering Page-8 section-3

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71.
Pick up the correct statement from the following:

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

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

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

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

E. All the above

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72.
Pick up the correct statement from the following:

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

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

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

D. All the above

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73.
Pick up the correct statement from the following:

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

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

C. The excess amount of alumina weakens the cement

D. All the above

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74.
Pick up the correct statement from the following:

A. The percentage of absorption for firebricks varies from 5 to 10

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

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

D. All the above

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75.
Pick up the correct statement from the following:

A. The phenol is carbolic acid

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

C. Phenol reacts with formaldehyde, to form phenol formaldehyde resin

D. All the above

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76.
Pick up the correct statement from the following:

A. The plastic bottles are made by the process of blowing

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

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

D. All the above

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77.
Pick up the correct statement from the following:

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

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

C. The plywoods possess uniform tensile strength in all directions

D. All the above

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78.
Pick up the correct statement from the following:

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

B. The polymer consists of thousands of monomers joined together

C. The polymer molecule is called macro-molecule

D. All the above

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79.
Pick up the correct statement from the following:

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

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

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

D. All the above

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80.
Pick up the synthetic resin from the following:

A. Urea resin

B. Phenolic resin

C. Resorcinol resin

D. All of these

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Building Materials MCQ Questions & Answers | Civil Engineering

71. Pick up the correct statement from the following:

Answer & Solution

72. Pick up the correct statement from the following:

Answer & Solution

73. Pick up the correct statement from the following:

Answer & Solution

74. Pick up the correct statement from the following:

Answer & Solution

75. Pick up the correct statement from the following:

Answer & Solution

76. Pick up the correct statement from the following:

Answer & Solution

77. Pick up the correct statement from the following:

Answer & Solution

78. Pick up the correct statement from the following:

Answer & Solution

79. Pick up the correct statement from the following:

Answer & Solution

80. Pick up the synthetic resin from the following:

Answer & Solution

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71.
Pick up the correct statement from the following:

72.
Pick up the correct statement from the following:

73.
Pick up the correct statement from the following:

74.
Pick up the correct statement from the following:

75.
Pick up the correct statement from the following:

76.
Pick up the correct statement from the following:

77.
Pick up the correct statement from the following:

78.
Pick up the correct statement from the following:

79.
Pick up the correct statement from the following:

80.
Pick up the synthetic resin from the following: