121. Duco is one of the patent forms of
A. Emulsion paints
B. Plasticpaints
C. Bituminous paints
D. Cellulose
D. Cellulose
122. Quartzite, a metamorphic stone is
A. Hard
B. Brittle
C. Crystalline
D. All the above
D. All the above
123. If the water required for 1 bag of cement is 30 liters, the water-cement ratio is:
A. 0.40
B. 0.50
C. 0.60
D. None of these
C. 0.60
124. The percentage of water for normal consistency is
A. 5% to 15%
B. 10% to 25%
C. 15% to 25%
D. 20% to 30%
C. 15% to 25%
125. Pick up the correct statement from the following:
A. The baked earth is called terra-cotta
B. The articles prepared from clay which is burnt at low temperature and cooled down slowly, are called earthen-ware
C. Thearticlespreparedfromrefractoryclayswhichasmixedwithstone and crushed pottery, are called stoneware
D. All the above
D. All the above
126. In a rock calcium carbonate predominates. State whether it is:
A. Siliceous rock
B. Argillaceousrock
C. Calcareous rock
D. None of these.
C. Calcareous rock
127. The cracks which extend from bark towards the sapwood in the cross-section of a tree, are called
A. Radial shakes
B. Star shakes
C. Heart shakes
D. Cup shakes
B. Star shakes
128. The steel used for rails under heavy traffic and on sharp curves is
A. Nickel steel
B. Chrome steel
C. Maganesesteel
D. Vanadium steel
C. Manganesesteel
129. The steel used in R.C.C. work is
A. Stainless-steel
B. Mild steel
C. High carbon steel
D. Wrought iron
Mild steel
130. Pick up the rock which is not a sedimentary rock from the following:
A. Gravel
B. Sandstone
C. Gypsum
D. Dolerite
D. Dolerite
131. Acrylic is the name
A. Celluloseresin
B. Alkydresin
C. Methylmethacrylate
D. Cumarone-indene
C. Methylmethacrylate
132. The PVC doors and windows are preferred as they are
A. Rustproof
B. Rotproof
C. Waterproof
D. All of these
D. All of these
133. The sequence of refractory materials according to increasing melting points is:
A. Dolomite, Magnesia, Bauxite, Chromites
B. Bauxite, Chromites, Dolomite, Magnesia
C. Magnesia, Bauxite, Dolomite, Chromites
D. None of these
B. Bauxite, Chromites, Dolomite, Magnesia
134. Upto a maximum of 72% of iron, is available in
A. Magnetite
B. Limonite
C. Siderite
D. Iron pyrites
A. Magnetite
135. The melting point of silica is:
A. 1570°C
B. 1630°C
C. 1730°C
D. 1850°C
C. 1730°C
136. Limestones are generally known as
A. Aqueousrocks
B. Sedimentary rocks
C. Stratifiedrocks
D. All the above
D. All the above
137. Stones used for rubble masonry must be
A. Soft
B. Hard
C. Light
D. Heavy
B. Hard
138. The property by virtue of which lime sets underwater is known as
A. Slacking
B. Setting
C. Hydraulicity
D. Calcining
C. Hydraulicity
139. Porcelain is used as:
A. Sanitary wares
B. Electric insulators
C. Storage vessels
D. Reactor chambers
D. Reactor chambers
140. 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
141. Second class bricks
A. Are of dark brown color
B. Produce a metallic sound when struck
C. Are well burnt
D. Are under burnt
B. Produce a metallic sound when struck
142. Wrought iron contains carbon up to
A. 0.25 %
B. 1.0%
C. 1.5%
D. 2 %
A. 0.25 %
143. The variety of pig iron used for the manufacture of wrought iron is
A. Bessemerpig
B. Grey or foundrypig
C. White forge pig
D. Mottled pig
C. White forge pig
144. Kaolin is chemically classified as
A. Metamorphic rock
B. Argillaceousrock
C. Calcareous rock
D. Siliceous rock
B. Argillaceousrock
145. Sewer pipes are made of
A. Earthenware
B. Stoneware
C. Refractory clay
All the above
D.B. Stoneware
146. 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
A. Cementationprocess
B. Crucible process
C. Bessemerprocess
D. Open hearth process
B. Crucible process
147. The rock generally used for roofing, is
A. Granite
B. Basalt
C. Slate
D. Pumice
C. Slate
148. The lime which contains mainly calcium oxide and slacks with water, is
A. Fatlime
B. Quicklime
C. Hydrauliclime
D. Poorlime
B. Quicklime
150. The standard size of masonry bricks, is
A. 18 cm × 8 cm × 8cm
B. 19 cm × 9 cm × 9cm
C. 20 cm × 10 cm × 10cm
D. 21 cm × 11 cm × 11 cm
B.19 cm × 9 cm × 9cm
151. The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:
A. 15, 75,10
B. 75, 10,15
C. 10, 15,75
D. 10, 75,15
A. 15, 75,10
152. Pick up the correct statement from the following:
A. Fiberboards are used for thermal and acoustic control
B. Fiberboards are used for lightweight standing members
C. Fiberboards is obtained by impregnating a resin product fibers
D. All the above
D. All the above
153. Portland cement manufactured from pure white chalk and clay but free from iron oxide is known as
A. Quick setting cement
B. Rapid hardeningcement
C. White Cement
D. Low heat Portland cement
C. White Cement
154. Pick up the correct statement from the following:
A. Slaked lime contains calcium hydroxide
B. Quick lime contains calcium oxide
C. Slaked lime may be obtained from quicklime
D. All the above
D. All the above
