Building Materials MCQ Questions & Answers

21

Higher pitch of the roof
i) results in stronger roof
ii) results in weaker roof
iii) requires more covering material
iv) requires less covering material
The correct answer is

A) (i) and (iii) B) (i) and (iv) C) (ii) and (iii) D) (ii) and (iv)

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Answer & Solution

Answer: Option A

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22

The method of addition polymerization is used for obtaining:

A) Polystyrene B) Polypropylene C) Polyvinylchloride D) All of these

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Answer & Solution

Answer: Option D

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23

Index number expressing the relative sizes of both coarse and fine aggregates, is called

A) Proportioning of aggregates B) Fineness modulus C) Grading of aggregates D) None of these

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Answer & Solution

Answer: Option B

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24

During smelting process, the combination of fuel in the furnace

A) Forms carbon dioxide B) Carbon dioxide with carbon forms carbon mono-oxide C) Carbon mono-oxide reacts with Fe₂O₃ to form iron and liberates CO₂ D) All the above

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Answer & Solution

Answer: Option D

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25

Bituminous fells are used for

A) Covering A.C. sheets B) Covering sloping roofs C) D.P.C. D) None to these

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Answer & Solution

Answer: Option A

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26

The slag which floats on the surface of the molten iron generally contains

A) Lime (CaO) 45% B) Silica (SiO₂) 35% C) Alumina (Al₂O₃) 12% and MgO, CaSO₄, KMnO₂ and FeO 8% D) All the above

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Answer & Solution

Answer: Option D

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27

Mastic asphalt is generally used for

A) Damp proof course B) Water proof layer C) Partition walls D) Both (A) and (B)

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Answer & Solution

Answer: Option D

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28

Vanadium steel is generally used for

A) Railway switches and crossing B) Bearing balls C) Magnets D) Axles and springs

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Answer & Solution

Answer: Option D

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29

Plastic bitumen is generally used for

A) Road pavements B) Expansion joints C) Crack fillings D) None to these

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Answer & Solution

Answer: Option C

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30

Lime concrete is generally used for

A) Wall foundations B) Flooring at ground level C) Both (A) and (B) D) Neither (A) nor (B)

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Answer & Solution

Answer: Option C

Solution:

Lime concrete is a mixture of lime, aggregate, and water used in construction for various purposes.

Wall foundations often utilize lime concrete due to its strength and durability, especially in older or traditional buildings.

Flooring at ground level also commonly uses lime concrete as it provides a smooth, durable surface.

Thus, both (A) and (B) are correct applications of lime concrete.

Building Materials MCQ Questions & Answers | Civil Engineering