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Engineering Materials

Engineering Materials
Which of the following is an amorphous material?

Mica
Lead
Silver
Glass

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Engineering Materials
Closed packed hexagonal space lattice is found in

Gamma-iron, aluminium, copper, lead, silver and nickel
Zinc, magnesium, cobalt, cadmium, antimony and bismuth
Alpha-iron, tungsten, chromium and molybdenum
None of these

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Engineering Materials
Body centered cubic space lattice is found in

None of these
Zinc, magnesium, cobalt, cadmium, antimony and bismuth
Gamma iron, aluminium, copper, lead, silver and nickel
Alpha iron, tungsten, chromium and molybdenum

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Engineering Materials
The property of a material due to which it breaks with little permanent distortion, is called

Brittleness
Ductility
Malleability
Plasticity

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Engineering Materials
The machinability of aluminium increases when _________ is added to aluminium.

Magnesium
Silicon
Copper
Lead and bismuth

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

Different crystal structures at different temperatures
Atoms distributed in random pattern
Any one of the above
Fixed structure at all temperatures

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