1. In mild steel carbon content is ______.
[A] less than 0.25 %
[B] between 0.25 % and 0.75 %
[C] more than 1.5%
[D] between 0.75 % and 1.5 %
Answer: Option A
2. In railway tracks metal used is _____.
[A] Wrought iron
[B] mild steel
[C] cast iron
[D] Stainless steel
Answer: Option B
3. Basalt and trap are used in _____.
[A] dams
[B] Roads
[C] ornamental works
[D] monumental works
Answer: Option B
4. _____ glass is used for air conditioning room.
[A] Obscure Glass
[B] Foam Glass
[C] UV Glass
[D] Structured glass
Answer: Option B
5. Fire bricks are used _____.
[A] to reflect heat
[B] to decrease heat flow
[C] to increase heat flow
[D] to protect building against lighting
Answer: Option B