Building Materials Quiz

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141. The expansion and shrinkage of plywood are comparatively low as:

A) they are held in position by adhesives
B) they are glued under pressure
C) plies are placed at right angles to each other
D) they are prepared from veneers

... Answer : C)
Explanation : Plies are placed at right angles to each other

142. Seasonings of timber is required to:

A) soften the timber
B) harden the timber
C) remove the sap from timber
D) straighten the timber

... Answer : C)
Explanation : remove the sap from timber

143. The ratio of Young’s modulus of high tensile steel to that of mild steel is about

A) 0.5
B) 1.0
C) 1.5
D) 2.0

... Answer : B)
Explanation : 1.0

144. Bureau of Indian Standards classifies bitumen into grades 65/25, 85/40 etc. The first and second numbers respectively refer to:

A) softening point and penetration
B) penetration and softening point
C) flash point and penetration
D) flash point and softening point

... Answer : A)
Explanation : softening point and penetration

145. Polyvinyl chloride (PVC) is a

A) Thermosetting material
B) Thermoplastic material
C) Elastoplastic material
D) rigid-plastic material

... Answer : B)
Explanation : thermoplastic material

146. Blast furnace slag has approximately

A) 45 % calcium oxide and 35% silica
B) 50% alumina and 20% calcium oxide
C) 25% magnesia and 15% silica
D) 25% calcium sulphate and 15% alumina

... Answer : A)
Explanation : 45 % calcium oxide and 35% silica

147. King closers are related to

A) door and windows
B) king post truss
C) queen post truss
D) brick masonary

... Answer : D)
Explanation : brick masonary

148. High alumina cement is produced by fusing together a mixture of

A) lime stone & bauxite
B) lime stone & bauxite & gypsum
C) limestone, gypsum & clay
D) limestone, gypsum, clay & chalk

... Answer : A)
Explanation : lime stone & bauxite

149. The optimum number of revolutions over which concrete is required to be mix in a mixer machine is

A) 10
B) 20
C) 50
D) 100

... Answer : B)
Explanation : 20

150. Which one of the following types of steels is used in the manufacture of rails ?

A) mild steel
B) manganese steel
C) cast steel
D) Bessemer steel

... Answer : B)
Explanation : manganese steel

151. During the conversion of Timber by sowing in order to obtain strong Timber pieces the cards should be made by:

A) ordinary sawing
B) tangential sawing
C) quarter sawing
D) radial sawing

... Answer : B)
Explanation : tangential sawing

152. A good mortar is obtained by adding which of the following ingredients into cement

A) sand stone
B) sand and surki
C) sand and lime
D) surki alone

... Answer : C)
Explanation : sand and lime

153. To make 1 cubic meter of 1 : 2 : 4 by volume concrete the volume of coarse aggregates required to:

A) 0.95 m square
B) 0.85 m square
C) 0.75 m square
D) 0.65 m square

... Answer : B)
Explanation : 0.85 m square

154. The temperature range in cement kiln is

A) 500 to 1000℃
B) 1000 to 1200℃
C) 1300 to 1500℃
D) 1600 to 2000℃

... Answer : C)
Explanation : 1300 to 1500℃

155. Before testing setting time of cement one should test for

A) Soundness
B) Strength
C) finance
D) consistency

... Answer : D)
Explanation : consistency

156. A splitting tensile test is performed on a cylinder of diameter d and length l. if the ultimate load is P then the splitting tensile strength of concrete is given by

A) P / π DL
B) 2P / π DL
C) 4PL/ π D3
D) 2PD / π L3

... Answer : B)
Explanation : 2P / π DL

157. Which of the following Foundation is used for the weakest soil?

A) column footing
B) grillage footing
C) raft footing
D) all of the above

... Answer : D)
Explanation : all of the above

158. When two or more footing are connected by a beam, it is called as:

A) beam footing
B) combined footing
C) strap footing
D) mat footing

... Answer : C)
Explanation : strap footing

159. The role of superplasticizer in a cement paste is to:

A) disperse the particles
B) disperse the particles and to remove air bubbles
C) disperse a particle to remove the air bubbles and to retard setting
D) None

... Answer : C)
Explanation : disperse a particle to remove the air bubbles and to retard setting

160.Consider the following statements:

        chasing glue is:

1. obtained from milk
2. obtained from the blood of animal
3. used in painting of metals
4. used in plywood industry
5. white in color
6. red in color

        Of the statements:

A) 1, 3 and 5 are correct
B) 1, 4 and 5 are correct
C) 2, 3 & 6 are correct
D) 2, 4 & 6 are correct

... Answer : B)
Explanation :1, 4 and 5 are correct

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