Materials Science Quiz

The phases present in pearlite are:

• Cementite and Austenite

• Austenite and Ferrite

• Ferrite and Cementite

• Martensite and Ferrite

Eutectic reaction for the iron-carbon system occurs at:

• 650°C

• 780°C

• 1147°C

• 1570°C

Time-dependent recoverable deformation under load is called:

• Elastic

• Anelastic

• Elastic after-effect

• Visco-elastic

A steel containing 16 to 18% chromium and about 0.12% carbon is called:

• Ferritic stainless steel

• Austenitic stainless steel

• Martensitic stainless steel

• Nickel steel

The ferrous material having 18% chromium and 8% of nickel is referred to as:

• Tool steel

• Stainless steel

• Killed steel

• High-speed steel

Identify the hardest metal:

• Iron

• Platinum

• Tungsten

• Diamond

The alloy of copper and zinc is known as:

• Brass

• Nickel

• Bronze

• Duralumin

The property of a material which allows it to be drawn into a smaller section is called:

• Plasticity

• Ductility

• Elasticity

• Malleability

The unit cell of a certain type of crystal is defined by three vectors a, b, and c. The vectors are mutually perpendicular, but a ≠ b ≠ c. The crystal structure is:

• Cubic

• Tetragonal

• Orthorhombic

• Rhombohedral

The property of metal by which it can be drawn into wires is called:

• Malleability

• Viscosity

• Ductility

• Tensile strength