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Materials and Construction

Materials and Construction
Ball bearings are generally made of

Stainless steel
Plain carbon steel
Malleable cast iron
Chrome carbon steel

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Materials and Construction
Thermosetting polymers are

Injection moulded
Cast molded
None of these
Extruded

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Materials and Construction
Polythene (low or high density) containers are not corroded by

Nitric acid (95%) at room temperature
Sulphur trioxide at 60°C
Sulphuric acid (10%) at room temperature
Any of these

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Materials and Construction
Water gas generator is made of

Carbon steel-brick lined
Stainless steel-lead lined
Cast iron
High carbon steel-procelain lined

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Materials and Construction
Spark plugs are made of

Metallic carbides
Corundum
Carborundum
High alumina ceramic

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

Nimonic alloys
Hastealloy
Inconel
Duralumin

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