500 Best Building Materials MCQ
Q225). The steel used in R.C.C. work is
a).stainless steel
b).mild steel
c).high carbon steel
d).wrought iron.
Correct Answer:
mild steel
Explanation:
Q226). Mastic asphalt is
a).water proof
b).fire proof
c).elastic
d).all the above.
Correct Answer:
all the above.
Explanation:
Q227). Non acid-resistant asbestos is :
a).tremolite asbestos
b).chrysolite abestos
c).amosite absestos
d).none of these.
Correct Answer:
chrysolite abestos
Explanation:
Q228). Stones used for the construction of retaining walls must be
a).soft
b).hard
c).light
d).heavy.
Correct Answer:
heavy.
Explanation:
Q229). Permanent magnets are made of high carbon steel and
a).15% of cobalt
b).20% of cobalt
c).35% of cobalt
d).45% of cobalt.
Correct Answer:
45% of cobalt.
Explanation:
Q230). Plastics are compounds of carbon with element
a).hydrogen
b).nitrogen
c).oxygen
d).All of these.
Correct Answer:
All of these.
Explanation:
Q231). Pick up the correct statement from the following:
a).The plastic bottles are made by the process of blowing
b).The plastic sheets are made by the calendering process in which the plastic material is allowed to pass between cylindrical rollers
c).The application of thermo-setting resins on sheets of paper, is called laminating process
d).All of these.
Correct Answer:
All of these.
Explanation:
Q232). Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following:
a).Alumina
b).Lime
c).Ironoxide
d).Magnesia.
Correct Answer:
Alumina
Explanation: