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Building Materials MCQ Question with Answer

Building Materials MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 22
Which of the following ingredients of the brick earth enables the brick to retain its shape?

Alumina
Silica
Iron
Magnesia
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Question No : 23
Assertion A : Paints with white lead base are not recommended for painting of iron works. Reason R : Paints with white lead base do not check rusting of iron. Select your answer according to the coding system given below:

Both A and R is true and, R is the correct explanation of A
Both A and R is true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
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Question No : 24
The thermosetting plastic

Becomes rigid when moulded at suitable pressure and temperature
At 127°C to 177°C permanently set and further application of heat does not soften it
Chars at 343°C
All the above
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Question No : 25
The main function of alumina in brick earth is

To impart plasticity
To make the brick durable
To prevent shrinkage
To make the brick impermeable
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Question No : 26
Shingle is

Decomposed laterite
Crushed granite
Water bound pebbles
Air weathered rock
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Question No : 27
The proportions of lime and sand in the mortar normally used in brick construction are

1 : 2
1 : 4
1 : 6
1 : 8
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Question No : 28
Cast iron

Is obtained by purifying pig iron
Is manufactured in required shapes
May contain 2 to 5 per cent of carbon with other impurities
All the above
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