SSC JE – BUILDING MATERIALS
FULL MOCK TEST – PART B (Q101–200)
Topics: Steel, Corrosion, Bitumen, Paints, Glass, Plastics, Modern Materials, Misc.
🔹 SECTION E — STEEL & METALS (101–125)
101. Mild steel contains carbon about
A. 0.05%
B. 0.25%
C. 0.8%
D. 1.5%
Ans: B
Explanation: Mild steel contains about 0.15–0.30% carbon, making it ductile and workable.
102. The main reason for the popularity of mild steel in construction is
A. High hardness
B. Low cost
C. Ductility
D. Corrosion resistance
Ans: C
Explanation: Mild steel is easily shaped due to high ductility.
103. Corrosion of steel is basically
A. Mechanical process
B. Physical process
C. Chemical process
D. Electrochemical process
Ans: D
Explanation: Corrosion involves anodic and cathodic reactions.
104. Rust is chemically
A. Ferrous oxide
B. Ferric oxide
C. Hydrated ferric oxide
D. Hydrated ferrous oxide
Ans: C
105. Corrosion of steel is faster in
A. Dry air
B. Moist air
C. Vacuum
D. Oil
Ans: B
106. Galvanizing is coating of steel with
A. Tin
B. Zinc
C. Lead
D. Chromium
Ans: B
Explanation: Zinc protects steel by sacrificial action.
107. Tinning means coating steel with
A. Zinc
B. Tin
C. Copper
D. Chromium
Ans: B
108. Stainless steel contains minimum chromium
A. 5%
B. 8%
C. 10.5%
D. 15%
Ans: C
109. Ductility of steel is measured by
A. Hardness test
B. Elongation test
C. Impact test
D. Fatigue test
Ans: B
110. Hardness of steel is tested by
A. Tensile test
B. Brinell test
C. Elongation test
D. Fatigue test
Ans: B
111. The main disadvantage of steel in fire is
A. Corrosion
B. Loss of strength
C. Brittleness
D. Expansion
Ans: B
Explanation: At high temperature, steel rapidly loses strength.
112. The process of preventing corrosion by paint is called
A. Galvanizing
B. Tinning
C. Barrier protection
D. Cathodic protection
Ans: C
113. Cathodic protection protects steel by
A. Coating it
B. Making it anode
C. Making it cathode
D. Removing oxygen
Ans: C
114. Which metal is commonly used as sacrificial anode?
A. Copper
B. Zinc
C. Lead
D. Nickel
Ans: B
115. The main alloying element in brass is
A. Zinc
B. Tin
C. Nickel
D. Lead
Ans: A
Explanation: Brass = Copper + Zinc.
116. Bronze is an alloy of
A. Copper + Zinc
B. Copper + Tin
C. Iron + Carbon
D. Aluminium + Copper
Ans: B
117. Aluminium is preferred for doors and windows because it is
A. Cheap
B. Light and corrosion resistant
C. Very strong
D. Fire resistant
Ans: B
118. Wrought iron contains carbon about
A. 0.02%
B. 0.25%
C. 0.8%
D. 1.5%
Ans: A
119. Cast iron is brittle because of
A. High silicon
B. High carbon
C. Low carbon
D. Low silicon
Ans: B
120. The process of improving hardness of steel by heating and quenching is
A. Annealing
B. Normalizing
C. Hardening
D. Tempering
Ans: C
121. Annealing of steel is done to
A. Increase hardness
B. Increase ductility
C. Increase brittleness
D. Reduce corrosion
Ans: B
122. The metal best suited for roofing sheets is
A. Lead
B. Copper
C. Aluminium
D. Steel
Ans: C
123. The density of steel is about
A. 5.0 g/cm³
B. 6.5 g/cm³
C. 7.85 g/cm³
D. 9.0 g/cm³
Ans: C
124. Which steel is used for springs?
A. Mild steel
B. Medium carbon steel
C. High carbon steel
D. Stainless steel
Ans: C
125. The main disadvantage of aluminium is
A. Heavy weight
B. High cost
C. Poor corrosion resistance
D. Brittleness
Ans: B
🔹 SECTION F — BITUMEN & ASPHALT (126–150)
126. Bitumen is obtained from
A. Coal
B. Petroleum
C. Wood
D. Limestone
Ans: B
127. The penetration test of bitumen measures
A. Ductility
B. Hardness
C. Softening point
D. Flash point
Ans: B
128. Softening point of bitumen is determined by
A. Float test
B. Ring and ball test
C. Ductility test
D. Penetration test
Ans: B
129. Ductility test of bitumen measures
A. Hardness
B. Stretching capacity
C. Fire resistance
D. Adhesion
Ans: B
130. Flash point of bitumen indicates
A. Viscosity
B. Fire hazard
C. Softness
D. Density
Ans: B
131. Cutback bitumen is prepared by adding
A. Water
B. Cement
C. Kerosene
D. Lime
Ans: C
132. Emulsified bitumen is a mixture of
A. Bitumen + cement
B. Bitumen + water
C. Bitumen + lime
D. Bitumen + sand
Ans: B
133. Advantage of emulsified bitumen is that it
A. Is cheaper
B. Can be used in wet conditions
C. Has higher strength
D. Sets very fast
Ans: B
134. Bitumen used for road works should have
A. Low penetration value
B. High ductility
C. Low flash point
D. Low softening point
Ans: B
135. Tar differs from bitumen because it is obtained from
A. Petroleum
B. Coal
C. Limestone
D. Wood
Ans: B
136. Asphalt is a mixture of
A. Bitumen and cement
B. Bitumen and aggregate
C. Tar and sand
D. Cement and sand
Ans: B
137. Prime coat is applied to
A. Seal surface
B. Improve bond
C. Reduce dust
D. All of these
Ans: D
138. Tack coat is used between
A. Two concrete layers
B. Two bituminous layers
C. Concrete and steel
D. Steel and timber
Ans: B
139. The binder in bituminous concrete is
A. Tar
B. Bitumen
C. Cement
D. Lime
Ans: B
140. The main defect in bituminous pavement due to heat is
A. Rutting
B. Cracking
C. Bleeding
D. Ravelling
Ans: C
141. Stripping in bituminous roads occurs due to
A. Excess traffic
B. Water action
C. Low temperature
D. Excess bitumen
Ans: B
142. Bituminous felt is used for
A. Flooring
B. Damp proofing
C. Roofing tiles
D. Masonry
Ans: B
143. The viscosity of bitumen increases with
A. Increase in temperature
B. Decrease in temperature
C. Increase in water
D. Decrease in pressure
Ans: B
144. Which test indicates temperature susceptibility of bitumen?
A. Penetration test
B. Softening point test
C. Ductility test
D. Viscosity test
Ans: B
145. Bitumen emulsion breaks by
A. Heating
B. Evaporation of water
C. Chemical reaction
D. Pressure
Ans: B
146. The penetration grade 80/100 means
A. Very hard bitumen
B. Medium hardness bitumen
C. Very soft bitumen
D. Liquid bitumen
Ans: C
147. Bitumen paint is mainly used for
A. Decoration
B. Waterproofing
C. Fireproofing
D. Insulation
Ans: B
148. Tar is less used nowadays because it
A. Is costly
B. Causes health hazards
C. Has low strength
D. Is difficult to apply
Ans: B
149. The unit of penetration value is
A. mm
B. cm
C. 1/10 mm
D. micron
Ans: C
150. The best binder for flexible pavements is
A. Cement
B. Lime
C. Bitumen
D. Clay
Ans: C
🔹 SECTION G — PAINTS, GLASS & PLASTICS (151–175)
151. The main function of paint is to
A. Increase strength
B. Improve appearance and protect surface
C. Increase weight
D. Reduce cost
Ans: B
152. The component of paint that gives colour is
A. Base
B. Vehicle
C. Pigment
D. Drier
Ans: C
153. The vehicle in paint is
A. Solvent
B. Binder
C. Colouring agent
D. Thinner
Ans: B
154. Driers in paint help in
A. Increasing colour
B. Faster drying
C. Increasing thickness
D. Preventing corrosion
Ans: B
155. Distemper is a
A. Oil based paint
B. Water based paint
C. Chemical paint
D. Plastic paint
Ans: B
156. Enamel paint gives
A. Matte finish
B. Glossy finish
C. Rough finish
D. Porous finish
Ans: B
157. Anti-corrosive paint is used mainly on
A. Brick walls
B. Concrete
C. Steel structures
D. Timber
Ans: C
158. Cement paint is mainly used on
A. Wooden surfaces
B. Steel surfaces
C. Masonry surfaces
D. Plastic surfaces
Ans: C
159. Glass is mainly composed of
A. Lime
B. Silica
C. Alumina
D. Magnesia
Ans: B
160. Toughened glass is produced by
A. Slow cooling
B. Chemical treatment
C. Rapid cooling
D. Annealing
Ans: C
161. Laminated glass is mainly used for
A. Decoration
B. Safety purposes
C. Thermal insulation
D. Sound insulation
Ans: B
162. Wired glass is used for
A. Thermal insulation
B. Fire resistance
C. Sound proofing
D. Decoration
Ans: B
163. Which glass is heat resistant?
A. Soda glass
B. Lead glass
C. Borosilicate glass
D. Sheet glass
Ans: C
164. Bakelite is a
A. Thermoplastic
B. Thermosetting plastic
C. Elastomer
D. Fiber
Ans: B
165. PVC is a
A. Thermosetting plastic
B. Thermoplastic
C. Elastomer
D. Ceramic
Ans: B
166. Plastic which can be reshaped on heating is called
A. Thermoset
B. Thermoplastic
C. Elastomer
D. Composite
Ans: B
167. The main advantage of plastics is
A. High weight
B. Corrosion resistance
C. Low durability
D. Brittleness
Ans: B
168. Nylon is used mainly because of its
A. Brittleness
B. Flexibility and strength
C. High weight
D. Poor durability
Ans: B
169. Glass wool is used as
A. Structural material
B. Thermal insulator
C. Waterproofing layer
D. Flooring material
Ans: B
170. Acrylic sheets are used as
A. Roofing tiles
B. Transparent panels
C. Insulation boards
D. Flooring tiles
Ans: B
171. FRP stands for
A. Fiber Reinforced Plastic
B. Flexible Resin Plate
C. Fiber Resin Product
D. Fine Reinforced Polymer
Ans: A
172. The main advantage of FRP is
A. High weight
B. High strength-to-weight ratio
C. Low durability
D. Brittleness
Ans: B
173. Polycarbonate sheets are preferred because they are
A. Brittle
B. Heavy
C. Impact resistant
D. Opaque
Ans: C
174. Rubber is classified as
A. Thermoplastic
B. Thermoset
C. Elastomer
D. Ceramic
Ans: C
175. Which plastic is commonly used for water tanks?
A. PVC
B. Bakelite
C. Polythene
D. Nylon
Ans: C
🔹 SECTION H — MODERN MATERIALS & MISC (176–200)
176. Fly ash is obtained from
A. Cement factory
B. Thermal power plant
C. Lime kiln
D. Brick kiln
Ans: B
177. Main advantage of fly ash in concrete is
A. Increases heat
B. Improves workability
C. Reduces durability
D. Increases cost
Ans: B
178. Fly ash bricks are
A. Heavy
B. Weak
C. Eco-friendly
D. Costly
Ans: C
179. GGBS is obtained from
A. Cement industry
B. Steel industry
C. Thermal plant
D. Brick kiln
Ans: B
180. GGBS improves concrete by increasing
A. Setting speed
B. Durability
C. Colour
D. Weight
Ans: B
181. Geopolymer concrete is
A. Cement based
B. Lime based
C. Alkali activated
D. Gypsum based
Ans: C
182. Self-compacting concrete flows due to
A. High water content
B. Superplasticizers
C. Air entrainment
D. Fly ash
Ans: B
183. The main benefit of SCC is
A. Low strength
B. No vibration needed
C. High cost
D. Slow setting
Ans: B
184. AAC blocks are
A. Heavy blocks
B. Lightweight blocks
C. Stone blocks
D. Solid clay blocks
Ans: B
185. Main advantage of AAC blocks is
A. High weight
B. High thermal insulation
C. Low strength
D. Poor durability
Ans: B
186. Polymer concrete uses
A. Cement
B. Lime
C. Resin
D. Gypsum
Ans: C
187. Shotcrete is mainly used in
A. Flooring
B. Tunnel lining
C. Roofing
D. Masonry
Ans: B
188. Ferrocement consists of
A. Cement and sand only
B. Cement and coarse aggregate
C. Cement mortar and wire mesh
D. Lime mortar and bricks
Ans: C
189. The main advantage of ferrocement is
A. High weight
B. Thin sections
C. Low durability
D. High brittleness
Ans: B
190. Ready-mix concrete improves
A. Labour cost
B. Quality control
C. Colour
D. Weight
Ans: B
191. Green concrete mainly focuses on
A. High strength
B. Environmental sustainability
C. Low cost only
D. Fast setting
Ans: B
192. Recycled aggregates are mainly used to
A. Increase strength
B. Reduce dead load
C. Reduce environmental impact
D. Increase durability
Ans: C
193. Nano-materials in concrete help in
A. Increasing cracks
B. Improving microstructure
C. Increasing porosity
D. Reducing strength
Ans: B
194. Phase change materials are used for
A. Structural strength
B. Thermal energy storage
C. Waterproofing
D. Sound insulation
Ans: B
195. Vacuum concrete is used to
A. Increase water content
B. Remove excess water
C. Increase air
D. Reduce cement
Ans: B
196. High performance concrete mainly aims at
A. Low cost
B. High strength and durability
C. Low weight
D. Easy mixing
Ans: B
197. Ultra-high performance concrete has
A. Low strength
B. High porosity
C. Very high strength
D. Poor durability
Ans: C
198. The main purpose of waterproofing is to
A. Improve appearance
B. Prevent water penetration
C. Increase strength
D. Reduce cost
Ans: B
199. The most common waterproofing material in buildings is
A. Cement paint
B. Bitumen
C. Lime
D. Clay
Ans: B
200. The durability of concrete mainly depends on
A. Cement type only
B. Aggregate only
C. Exposure conditions
D. Colour
Ans: C