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Materials and Construction

Materials and Construction
Which of the following commercial metals is most abundantly found in India?

Aluminium
Nickel
Zinc
Copper

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Materials and Construction
Which of the following is not a copper based alloy with nickel?

Constantan
Monel metal
German silver
Inconel

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Materials and Construction
Which of the following is not an alloy of tin?

Pewter type metal
German silver
White-bearing metal
Soft solder

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Materials and Construction
Silicon percentage in iron castings to have maximum hardness should be about

0.5
2.5
0.3
0.8

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Materials and Construction
Which of the following is the hardest material?

Corrundum
Quartz
Flourite
Topaz

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Materials and Construction
Lead lined equipments & vessels are suitable for handling

Nitric acid
All of these
Sulphuric acid upto 60°C
Hydrochloric acid (10%)

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