Which of the following materials has maximum ductility?

11) The property of a material due to which it breaks with little permanent distortion is called

Answer is:

Brittleness

Explanation:

Brittleness
Brittleness is a property of material which breaks with little or no deformation.

Plasticity: Plasticity is the property by which a metal retains its deformation permanently, when the external force applied on it is removed.
Examples: forming, forging, hammering

Ductility: Ductility is the property by which a metal can be drawn into thin wires. It is determined by percentage elongation and percentage reduction in area of a metal.

Malleability: Malleability is the property by which a metal can be rolled into thin sheets. Highly malleable metals (like Mild Steel) are extensively used in making sheet metals.

12) The hardness is the property of a material due to which it

can be drawn into wires

breaks with little permanent distortion

can cut another metal

can be rolled or hammered into thin sheets

Answer is:

can cut another metal

Explanation:

Hardness is a very important property of the metals and has a wide variety of meanings. It embraces many different properties such as resistance to wear, scratching, deformation and machinability etc. It also means the ability of the metal to cut another metal.
The hardness is usually expressed in numbers which are dependent on the method of making the test.

13) Which of the following material has maximum malleability?

Answer is:

Lead

Explanation:

Malleability: Malleability is the property by which a metal can be rolled into thin sheets. Highly malleable metals (like Mild Steel) are extensively used in making sheet metals.
Lead is a soft, malleable, ductile, bluish-white, dense metallic element, extracted chiefly from galena and found in ore with zinc, silver and copper. Whilst it is still used for its malleability and corrosion resistance, it is its chemical properties that make it a thoroughly modern metal.

14) The ability of a material to absorb energy in the plastic range is called

Answer is:

resilience

Explanation:

Resilience: Resilience is the ability of a metal to absorb energy and resist soft and impact load.

Creep: When a metal is subjected to a constant load (below its yield point), at high temperature, for a prolonged period of time, it undergoes a permanent deformation. This tendency of the metal is called creep.

Toughness: When a huge external force is applied on a metal, the metal will experience fracture. Toughness is the ability of a metal to resist fracture. The ability of a material to resist fracture due to high impact loads, is called toughness.

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Which of the following materials has maximum ductility?

Mild steel

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Related Engineering Materials MCQ with Answers

11) The property of a material due to which it breaks with little permanent distortion is called

Brittleness

12) The hardness is the property of a material due to which it

can cut another metal

13) Which of the following material has maximum malleability?

Lead

14) The ability of a material to absorb energy in the plastic range is called

resilience

For More Engineering Materials MCQ with Answers