Building Materials MCQ

161. Plastic asphalt is

A. Used as a water proofing layer overroof

B. A mixture of cement andasphalt

C. A naturalasphalt

D. A refinery product

B. A mixture of cement andasphalt

162. Pick up the correct statement from the following:

A. During rusting, first ferrous bicarbonates areformed

B. Rusting is caused due to combined action of air, moisture, and carbondioxide

C. On further oxidation ferrous bicarbonates get converted to ferricbicarbonates

D. All the above

D. All the above

163. The commonly used base for iron and steel work is

A. Redlead

B. Zincwhite

C. White lead

D. Titanium white

A. Redlead

163. For high-grade instruments the steel preferred, is

A. Cast steel

B. Bessemer steel

C. Mildsteel

D. Whitworth compressed steel

A. Caststeel

164. Bitumen felt is used for

A. Waterproofing

B. Dampproofing

C. Both (A) and(B)

D. Neither (A) nor (B)

C. Both (A) and(B)

165. The most important constituent of an oil paint, is

A. Thinner

B. Vehicle

C. Pigment

D. All the above

D. All the above

166. Acrylic sheets

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

B. Are generally unaffected by most householddetergents

C. Possess the light transmission rate of93%

D. All the above

D. All the above

167. Brass is an alloy of

A. Copper and zinc

B. Zinc andlead

C. Tin andsilver

D. Zinc and nickel

A. Copper and zinc

168. Pick up the polymineralic rock from the following:

A. Quartzsand

B. Pure gypsum

C. Magnesite

D. Granite

D. Granite

169. The lime which contains a high percentage of calcium oxide is generally called

A. Fatlime

B. Rich lime

C. White lime

D. None of these

D. None of these

170. Wrought iron contains carbon up to

A. 0.25 %

B 1.0%

C  1.5%

D 2 %

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