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A good building stone should not absorb water more than

A. 5 %

B. 10 %

C. 15 %

D. 20 %

Correct Answer :

A. 5 %


Related Questions

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For the manufacture of stainless steel, steel is mixed with

A. Chromium

B. Nickel

C. Tungsten

D. None of these

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Brittleness of cold is due to an excess of

A. Sulphur

B. Carbon

C. Phosphorus

D. Silicon

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The rocks which are formed due to pouring of magma at the earth's surface are called

A. Plutonic rocks

B. Hypabyssal rocks

C. Volcanic rocks

D. Igneous rocks

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The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick

A. 20 %

B. 15 %

C. 10 %

D. None of these

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4

Plywood has the advantage of

A. Greater tensile strength in longer direction

B. Greater tensile strength in shorter direction

C. Same tensile strength in all directions

D. None of the above

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The minimum compressive strength of 2nd class bricks should be

A. 75 kg/cm2

B. 90 kg/cm2

C. 100 kg/cm2

D. 120 kg/cm2

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Based on the following rocks and minerals, select the correct statement, quartz, shale, basalt, granite, marble, gypsum, mica

A. Basalt and marble are the only metamorphic rocks

B. There is no sedimentary rock

C. Granite is the only igneous rock

D. Quartz and mica are minerals

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Fibre glass

A. Retains heat-longer

B. Has a higher strength to weight ratio

C. Is shock proof and fire retardant

D. All the above

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Calcination of iron ores is done

A. To remove moisture

B. To remove carbonic acid

C. By roasting in heaps

D. All the above

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Slate is formed by metamorphic action on

A. Shale

B. Lime stone

C. Sand stone

D. Granite

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Pick up the non-inflammable plastic from the following:

A. Cellulose acetate plastics

B. Polyvinyl chloride plastics

C. Phenol formaldehyde plastic

D. Urea formaldehyde plastic

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4

Most commonly used solvent in oil paints, is

A. Petroleum

B. Spirit

C. Coal tar

D. Turpentine

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The most commonly used base for timber painting, is

A. Red lead

B. Zinc white

C. White lead

D. Titanium white

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For sanitary pipes and chemical stonewares,

A. Salt glazing is used

B. Lead glazing is used

C. Opaque glazing is used

D. None of these

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4

Linseed oil is used in paints as

A. Thinner

B. Vehicle

C. Base

D. Drier

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The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout

A. The monsoon

B. The winter

C. The summer

D. None of these

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The portion of the brick cut across its width and having its length equal to that of a full brick, is known as

A. Closer

B. Queen closer

C. King closer

D. Prince closer

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Mastic asphalt is

A. Acid resisting material

B. Non-corrosive material

C. Corrosive material

D. Heating-resisting material

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Slacking of lime is affected by

A. Keeping it exposed to air

B. Immersing the lime in water

C. Crushing the lime lumps

D. None of these

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Pick up the correct statement from the following:

A. Lime is available in Free State

B. Lime is available by dissolving calcium carbonate in water

C. Lime is available by calcining calcium carbonate at 900°C

D. Lime is nothing but calcium chloride

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4

Kaolin is chemically classified as

A. Metamorphic rock

B. Argillaceous rock

C. Calcareous rock

D. Siliceous rock

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4

In paints, the pigment is responsible for

A. Durability

B. Colour

C. Smoothness

D. Glassy face

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The specific gravity of marble, is

A. 2.50

B. 2.60

C. 2.66

D. 2.72

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After storage, the strength of cement

A. Decreases

B. Increases

C. Remains same

D. May increase or decrease

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Knots in timber are

A. Defects caused by crushing fibres

B. Splits radiating from the centre

C. Speckled strains

D. Signs of branches cut off

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Spalling hammer is used for

A. Driving wooden headed chisels

B. Rough dressing of stones

C. Carving of stones

D. Breaking small projection of stones

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The weight of 1 m3 of brick earth, is about

A. 1200 kg

B. 1500 kg

C. 1800 kg

D. 2000 kg

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Asbestos cement

A. Is brittle

B. Warps due to changes in humidity

C. Strength is lowered when saturated by water

D. All of the above

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The silica is used for preparing

A. Silica bricks

B. Coke oven

C. Lining for glass furnaces

D. All of these

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A mortar joint in masonry which is normal to the face of wall is known as

A. Bed joint

B. Wall joint

C. Cross joint

D. Bonded joint