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Engineering Materials

Engineering Materials
Super conduction by metals is observed in the temperature range of

Above 100°K
Below 10°K
Around 0°C
Around 100°C

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Engineering Materials
Grey cast iron has

Carbon in the form of free graphite
Low compressive strength
High tensile strength
All of these

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Engineering Materials
Chromium when added to steel _________ the tensile strength.

Decreases
None of these
Does not effect
Increases

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Engineering Materials
The molecules in a solid move

Back and forth like tiny pendulums
In circular motion
In a random manner
In a haphazard way

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Engineering Materials
Addition of lead and bismuth to aluminium results in

One of the best known age and precipitation hardening systems
Improving machinability
Improvement of casting characteristics
Improvement of corrosion resistance

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Engineering Materials
Monel metal contains

63 to 67% nickel and 30% copper
Malleable iron and zinc
Alloy of tin, lead and cadmium
88% copper and 10% tin and rest zinc

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