The pressure acting on the stones in stone masonry construction should be
A. Along the direction of bedding planes
B. At 45° to the direction of bedding planes
C. At 60° to the direction of bedding planes
D. Perpendicular to the direction of bedding planes
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Jumper is a tool used for
A. Testing of stones
B. Quarrying of stones
C. Dressing of stones
D. None of the above
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Durability of building stone is affected by its
A. Chemical composition
B. Texture
C. Resistance to atmosphere
D. All the above
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The ratio of the thickness of web to that of flange of steel rolled structural beams and channels is
A. Less than 1
B. Equal to 1
C. Greater than 1
D. Less than 1 in beams but greater than 1 in channels
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According to ISI, bitumen is classified into
A. 2 grades
B. 4 grades
C. 8 grades
D. 10 grades
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Cast steel is manufactured by
A. Cementation process
B. Crucible process
C. Bessemer process
D. Open hearth process
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A good quality stone absorbs water less than
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A stone is rejected if it absorbs water more than
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For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is
A. 80 : 13 : 7
B. 70 : 20 : 10
C. 60 : 35 : 5
D. None of these
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Sand stone is
A. Sedimentary rock
B. Metamorphic rock
C. Igneous rock
D. Volcanic rock
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Seasoning is
A. A process of removing sap
B. Creosoting
C. Painting with sodium silicate
D. Coating with tar
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The variety of pig iron used for the manufacture of steel by Bessemer process, is
A. Bessemer pig
B. Grey pig
C. White forge pig
D. Mottled pig
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Seasoning of timber is essential to remove
A. Knots from timber
B. Sap from timber
C. Twisted fibre from timber
D. Roughness of timber
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The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as
A. Quarrying of stones
B. Blasting of stones
C. Seasoning of stones
D. Dressing of stones
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Shingle is
A. A type of roofing material made from wood
B. A type of roofing material made from asphalt
C. Small, flat, rectangular pieces of material used for roofing or siding
D. A type of sedimentary rock commonly used in construction
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Brass is an alloy of
A. Copper and zinc
B. Zinc and lead
C. Tin and silver
D. Zinc and nickel
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The most fire resistant paints are:
A. Enamel paints
B. Aluminium paints
C. Asbestos paints
D. Cement paints
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Assertion A : Pure lime takes a long time to develop adequate strength. Reason R : Pure lime has slow hardening characteristics. Select your answer according to the coding system given below:
A. Both A and R is true and R is correct explanation of A
B. Both A and R is true and R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true
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Assertion A : Normally turpentine oil is recommended as thinner for indoor painting. Reason R : Turpentine oil is costlier than other thinners. Select your answer according to the coding system given below:
A. Both A and R is true and R is the correct explanation of A
B. Both A and R is true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true
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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:
A. Both A and R is true and, R is the correct explanation of A
B. Both A and R is true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true
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