A material is said to be allotropic, if it has

Engineering Materials
A material is said to be allotropic, if it has

Fixed structure at all temperatures

Any one of the above

Atoms distributed in random pattern

Different crystal structures at different temperatures

Fixed structure at all temperatures

Any one of the above

Atoms distributed in random pattern

Different crystal structures at different temperatures

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Engineering Materials
White cast iron

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

Is produced by annealing process. It is soft, tough and easily machined metal

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

Is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

Is produced by annealing process. It is soft, tough and easily machined metal

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

Is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material

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Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Hypereutectic cast irons

Hypoeutectic cast irons

None of these

Eutectic cast irons

Hypereutectic cast irons

Hypoeutectic cast irons

None of these

Eutectic cast irons

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Engineering Materials
When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces

Nodular cast iron

Alloy cast iron

Malleable cast iron

White cast iron

Nodular cast iron

Alloy cast iron

Malleable cast iron

White cast iron

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Engineering Materials
An example of amorphous material is

Lead

Silver

Zinc

Glass

Lead

Silver

Zinc

Glass

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Engineering Materials
Solder is an alloy consisting of

Tin, antimony, copper

Tin and lead

Lead and zinc

Tin and copper

Tin, antimony, copper

Tin and lead

Lead and zinc

Tin and copper

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Engineering Materials

Engineering Materials A material is said to be allotropic, if it has

Engineering Materials White cast iron

Engineering Materials Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Engineering Materials When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces

Engineering Materials An example of amorphous material is

Engineering Materials Solder is an alloy consisting of

Engineering Materials
A material is said to be allotropic, if it has

Engineering Materials
White cast iron

Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Engineering Materials
When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces

Engineering Materials
An example of amorphous material is

Engineering Materials
Solder is an alloy consisting of