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Materials and Construction

Materials and Construction
High carbon steel contains more than __________ percent carbon.

0.5
2.2
2.8
2.5

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Materials and Construction
Platinum and silver are corroded by

Caustic soda solution
None of these
Sulphuric acid (10%)
Phosphoric acid

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Materials and Construction
The most distinguished property of malleable cast iron is its high

None of these
Ductility
Hardness
Malleability

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Materials and Construction
Carbon is present in the uncombined (graphitic) form in case of

Cast iron
Ferroalloy
Steel
None of these

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Materials and Construction
Thermometer bulb & capillary in case of mercury filled pressure spring expansion thermometer is normally made of __________ as mercury does not amalgamate with it.

Copper alloys
Monel
Copper
Stainless steel

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Materials and Construction
Constantan is an alloy of

Cu (55%) & Sn (45%)
Cu (55%) & Ni (45%)
Pt (95%) & Rh (10%)
Fe (80%) & Ni (20%)

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