1887. Nickel base alloys with __________ are known as monel metal.
Zinc
Tin
Copper
Molybdenum
✅ The correct answer is option C.
1851. __________ alloys have the highest specific strength of all the structural materials out of the following.
Magnetic steel
Titanium
Chromium
Magnesium
✅ The correct answer is option B.
1854. Presence of 0.3 to 0.5% arsenic in copper increases its
Ductility
Malleability
Tenacity & hardness
Electrical conductivity
✅ The correct answer is option C.
1857. Metal at the top of the electromotive series is
Least active
Most stable
Most active
Most noble
✅ The correct answer is option C.
1860. High carbon steel contains more than __________ percent carbon.
0.5
2.2
2.5
2.8
✅ The correct answer is option A.
1863. Which of the following pairs of elements may form an alloy?
Iron & carbon
Iron & mercury
Platinum & mercury
None of these
✅ The correct answer is option A.
1866. Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with
Karbate
Lead or glass
Fireclay bricks
PVC
✅ The correct answer is option B.
1869. Lead
Is the hardest metal in common use
Is the lightest metal in common use
Can not be scratched by finger nails
Can not be work hardened
✅ The correct answer is option D.
1871. A metallic alloy in which one of the constituent metal is __________ , is called an amalgam.
Zinc
Mercury
Lead
Tin
✅ The correct answer is option B.
1835. Urea autoclave is made of
Cast iron
Refractory blocks
Stainless steel
Lead lined steel
✅ The correct answer is option C.