Welding
Slip casting
Extrusion
Plastic pressing
✅ The correct answer is option A.
Materials and Construction MCQs
102. Anodic material used for the cathodic protection of underground buried steel pipeline is
Nickel or copper
Zinc or magnesium
Bronze
Brass
✅ The correct answer is option B.
103. Bell metal is an alloy of
Copper & zinc
Copper & tin
Copper & nickel
Zinc & tin
✅ The correct answer is option B.
104. Molten phthalic anhydride is stored in a/an __________ vessel.
Aluminium
Nickel clad steel
Lead lined steel
Glass lined steel
✅ The correct answer is option A.
105. Compressive strength of wood is usually more along the grains. The tenile strength of wood as compared to that of steel is about
Half
One third
One fifth
One twelfth
✅ The correct answer is option C.
106. Hardest materials so far found is
Diamond
Graphite
Carborundum
Pumice stone
✅ The correct answer is option A.
107. Steel rods are used in reinforced concrete to increase its __________ strength.
Shear
Tensile
Compressive
None of these
✅ The correct answer is option B.
108. Corrosion resisting properties of cast iron are significantly improved by the addition of 12 – 15% of
Tungsten
Vanadium
Silicon
All of the above
✅ The correct answer is option C.
109. ‘Age hardening’ of duralumin is due to
Copper
Magnesium
Both A & B
Neither A nor B
✅ The correct answer is option C.
110. Nickel is a constituent of
Bronze
Solder
Duralumin
Monel metal
✅ The correct answer is option D.