Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is__________________?

A. It contains carbon of the order of 0 to 0.25%
B. It melts at 1535°C
C. It is very soft and ductile
D. It can be easily forge welded
E. It is made by adding suitable percent¬age of carbon to molten iron and subjecting the product to repeated hammering and rolling

A. magnesium alloys
B. titanium alloys
C. chromium alloys
D. magnetic steel alloys
E. none of the above

A. B.C.C. crystalline structure
B. F.C.C. crystal structure
C. H.C.P. structure
D. a complex cubic structure
E. orthorhombic crystalline structure

A. cast iron
B. mild steel
C. non-ferrous materials
D. wrought iron
E. stainless steel