Building Materials MCQ Questions & Answers

31

Forge pig may be converted to wrought iron by

A) Rolling B) Pudding C) Shingling D) Refining

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Answer & Solution

Answer: Option B

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32

If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called

A) Bessemer pig B) Grey or foundry pig C) White or forge pig D) Mottled pig

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Answer & Solution

Answer: Option C

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33

Which of the following should be used for hearting of thicker walls?

A) Headers B) Stretchers C) Brick bats D) Queen closer

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Answer & Solution

Answer: Option C

Solution:

In brick masonry, the term "hearting" refers to the interior filling of a thick wall between the two outer faces.

For thicker walls, especially those more than one brick thick, proper filling of the internal space (hearting) is essential to ensure strength and stability.

Brick bats, which are pieces of bricks (often broken or cut), are commonly used for this purpose.

They help fill the space effectively and maintain the bond between the outer layers of the wall.

Using full bricks like headers or stretchers for hearting is not economical or practical in most cases.

Queen closers are used at corners and junctions to maintain bond and are not suitable for hearting.

Therefore, the correct answer is: Brick bats (Option C).

34

Seasoning of timber is done

A) To make it water proof B) To paint its surface C) To increase its temperature D) To remove water

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Answer & Solution

Answer: Option D

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35

Pick up the correct statement from the following:

A) Acid test is done to find out the weathering quality of stones B) Attrition test is done to find out the rate of wear of stones which are used in road construction C) Crushing test is done to find out the compressive strength of the stone D) All the above

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Answer & Solution

Answer: Option D

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36

Pick up the correct statement from the following:

A) Adding 5% to 6% of moisture content by weight, increases the volume of dry sand from 18% to 38% B) The bulking of fine sand is more than that of coarse sand C) If the percentage content of moisture exceeds 10%, increase in bulk of sand starts increasing D) All the above

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Answer & Solution

Answer: Option D

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37

Pick up the correct statement from the following:

A) Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer B) Cupola furnace is used for the manufacture of cast iron C) Red short iron is of no value for welding purpose D) All the above

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Answer & Solution

Answer: Option D

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38

Pick up the correct statement from the following:

A) Alexander Parkes, a Scottish chemist prepared a hard material by mixing camphor and alcohol with nitro cellulose and called it, as Parkesite B) Dr. L. Bakeland, a Belgian scientist prepared a product known as Bakelite C) Pollark, an Austrian scientist prepared a substance from urea and formaldehyde and called it Plastic D) All the above

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Answer & Solution

Answer: Option D

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39

Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following:

A) Alumina B) Lime C) Iron-oxide D) Magnesia

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Answer & Solution

Answer: Option A

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40

Pick up the correct statement from the following:

A) Blistering may be cured by applying water paint finished with oil paint dried with a little copal varnish B) Cracked paints may be cured by removing paint and giving a fresh coat of paint C) Crawling paints may be cured by sand preparing the surface and giving a fresh coat with plenty of turps D) All the above

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Answer & Solution

Answer: Option D

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Building Materials MCQ Questions & Answers | Civil Engineering