BUILDING MATERIALS QUIZ

If ‘P’ is the percentage of water required for normal consistency, water to be added for determination of initial setting time, is

0.85 P

0.70 P

0.75 P

0.80 P

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Bitumen may be dissolved in

Carbon disulphide

Carbondioxide

Sodium chloride

Water

TRUE ANSWER : ?
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The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as

Bessemer process

Open hearth process

Cementation process

Crucible process

TRUE ANSWER : ?
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A volatile substance added to a paint to make its application easy and smooth, is known as

None to these

Solvent

Base

Vehicle

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

Volcanic rocks

Igneous rocks

Plutonic rocks

Hypabyssal rocks

TRUE ANSWER : ?
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Proper amount of entrained air in concrete results in (i) Better workability (ii) Better resistance to freezing and thawing (iii) Lesser workability (iv) Less resistance to freezing and thawing

(iii) and (iv)

(ii) and (iii)

(i) and (ii)

(i) and (iv)

TRUE ANSWER : ?
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Acrylic sheets

All of these

Are generally unaffected by most household detergents

Possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness

Possess the light transmission rate of 93%

TRUE ANSWER : ?
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The standard size of masonry bricks, is

20 cm x 10 cm x 10 cm

18 cm x 8 cm x 8 cm

19 cm x 9 cm x 9 cm

21 cm x 11 cm x 11 cm

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For testing compressive strength of cement, the size of cube used is

100 mm

50 mm

70.6 mm

150 mm

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Chlorite, a green colour mineral is mainly derived from the decomposition of

Biotite

Hornblende

Augite

All of these

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